Patent Publication Number: US-8977639-B2

Title: Actionable search results for visual queries

Description:
RELATED APPLICATIONS 
     This application claims priority to the following U.S. Provisional patent application which is incorporated by reference herein in its entirety: U.S. Provisional Patent Application No. 61/266,130, filed Dec. 2, 2009, entitled “Actionable Search Results for Visual Queries.” 
     This application is related to the following U.S. Provisional patent applications all of which are incorporated by reference herein in their entirety: U.S. Provisional Patent Application No. 61/266,116, filed Dec. 2, 2009, entitled “Architecture for Responding to a Visual Query;” U.S. Provisional Patent Application No. 61/266,122, filed Dec. 2, 2009, entitled “User Interface for Presenting Search Results for Multiple Regions of a Visual Query;” U.S. Provisional Patent Application No. 61/266,125, filed Dec. 2, 2009, entitled “Identifying Matching Canonical Documents In Response To A Visual Query;” U.S. Provisional Patent Application No. 61/266,126, filed Dec. 2, 2009, entitled “Region of Interest Selector for Visual Queries;” U.S. Provisional Patent Application No. 61/266,133, filed Dec. 2, 2009, entitled “Actionable Search Results for Street View Visual Queries;” U.S. Provisional Patent Application No. 61/266,499, filed Dec. 3, 2009, entitled “Hybrid Use Location Sensor Data and Visual Query to Return Local Listing for Visual Query,” and U.S. Provisional Patent Application No. 61/370,784, filed Aug. 4, 2010, entitled “Facial Recognition with Social Network Aiding.” 
    
    
     TECHNICAL FIELD 
     The disclosed embodiments relate generally to creating one or more actionable search result elements corresponding to an entity in a visual query. 
     BACKGROUND 
     Text-based or term-based searching, wherein a user inputs a word or phrase into a search engine and receives a variety of results, is a useful tool for searching. However, term based queries require that a user be able to input a relevant term. Sometimes a user may wish to know information about an image. For example, a user might want to know the name of a person in a photograph, or a user might want to know the name of a flower or bird in a picture in a magazine. A person may also wish to contact the person in the image or buy an item in the image. Accordingly, a system that can receive a image, translate it into a visual query, and provide actionable search result elements corresponding to entities identified in the visual query would be desirable. 
     SUMMARY 
     Some of the limitations and disadvantages described above by providing methods, systems, computer readable storage mediums, and graphical user interfaces (GUIs) described below. 
     Some embodiments provide methods, systems, computer readable storage mediums, and graphical user interfaces (GUIs) provide the following. According to some embodiments, a computer-implemented method of processing a visual query includes performing the following operations on a server system having one or more processors and memory storing one or more programs for execution by the one or more processors. A visual query is received by the server system from a client system. In some embodiments, the visual query is processed by sending the visual query to at least one search system implementing a visual query search process, and receiving a plurality of search results from one or more of the search systems. Whether or not the server system sends the visual query to the search systems, the server system identifies an entity in the visual query. It also identifies one or more client-side actions corresponding to the identified entity. Then it creates an actionable search result element configured to launch one of the client-side actions. In some embodiments, it creates a plurality of actionable search results configured to launch a plurality of the client side actions. Finally, the server system sends the actionable search result element(s) and at least one of the plurality of search results to the client system. 
     In some embodiments, the actionable search result element is distinct from the plurality of search results. Some embodiments provide creating and sending to the client system a plurality of actionable search result buttons that are each configured to launch a unique client action. 
     In some embodiments, the method also includes identifying a plurality of distinct client-side actions corresponding to the identified entity. Then the server system creates two or more actionable search result elements that are each configured to launch a respective client-side action of the identified plurality of client-side actions. The servers system then sends the two or more actionable search result elements to the client system. 
     In some embodiments, identifying the entity comprises using a non-OCR image matching process to identify the entity in the visual query. 
     In some embodiments, the respective client-side action is one or more of the following: initiating a call to a telephone number, instant messaging, paging, faxing, emailing, a social network communication, and communicating by another communication mechanism. 
     In some embodiments, the identified entity in the visual query can be a person, a name or other identifier associated with the person, a bar code, a logo, a business, an organization, a building, a group of buildings or physical structures, a postal address, a landmark, a geographical entity, a product, or a service. 
     The aforementioned method optionally also includes sending to the client system a representation of the visual query with the actionable search result element overlaying at least a portion of the representation of the visual query. In other embodiments, the sending includes sending to the client system information for visually presenting the actionable search result element overlaying at least a portion of the visual query. 
     Optionally, when the identified entity is a phone number, the actionable search result element is a button (i.e., a discrete user interface element which may or may not look like a button) for initiating a telephone call to the phone number. When the identified entity is an email address, the actionable search result element is a button for initiating composition of an email message to the email address. When the identified entity is a postal address, the actionable search result element is a button for mapping the address. In some embodiments, mapping includes at least one of: providing a map identifying the location of the postal address, providing driving directions to the postal address, providing driving directions from the postal address, providing an aerial photograph including the postal address, and providing a street view image corresponding to the postal address. 
     Optionally, the actionable search result element is configured to add information to a contacts list. The information may include one or more of: a name, an email address, a phone number, a fax number, a postal address, an instant messaging address, a company name, an organization name, a URL, and a social networking contact. 
     In some embodiments, when entity is a product, the actionable search result element is configured to provide one or more of the following: a product review, an option to initiate purchase of the product, and option to initiate a bid on the product, a list of similar products, and a list of related products. 
     Some embodiments provide that when the identified entity is a person, or an identifier associated with the person, the plurality of search results includes a communication address associated with the person, and the actionable search result element is configured to launch a communication using the communication address. 
     In some embodiments, the actionable search result includes an identifier associated with the person, and the identifier is one the name of the person, a facial image of the person, an identification number associated with the person, a phone number associated with the person, a fax number associated with the person, a social networking identifier associated with the person, and/or an email address associated with the person. 
     In some embodiments, in addition to the actionable search result elements, an actionable element, configured to share or upload at least a portion of the visual query is provided as well. 
     Some embodiments provide methods, systems, computer readable storage mediums, and graphical user interfaces (GUIs) provide the following. According to some embodiments, a computer-implemented method of processing a visual query includes performing the following steps performed on a client system having one or more processors, a display, and memory storing one or more programs for execution by the one or more processors. A visual query is received from an application such as an image capturing application. The client system creates a visual query from the image. Then the client system sends the visual query to a visual query search system. The visual query search system processes the visual query as discussed above. The client system receives from the visual query search system an actionable search result element configured to launch a client-side action. The actionable search result element corresponds to an entity in the visual query. The client system displays the actionable search result element on the display using a visual query client application. The client system then receives a user selection of the actionable search result element, and launches the client-side action corresponding to the selected actionable search result element. The client-side action is launched in a client-side application distinct from the visual query client application. 
     In some embodiments, the client-side application distinct from the visual query client application is an email application, a browser application, a phone application, an instant messaging application, a social networking application, or a mapping application. 
     In some embodiments, a server system including one or more central processing units for executing programs and memory storing one or more programs be executed by the one or more central processing units is provided. The programs include instructions for performing the following. A visual query is received from a client system. In some embodiments, the visual query is processed by sending it visual query to at least one search system implementing a visual query search process, and then the server receives a plurality of search results from one or more of the search systems. Whether or not the server system sends the visual query to the search systems, the server system identifies an entity in the visual query. It also identifies one or more client-side actions corresponding to the identified entity. Then it creates an actionable search result element configured to launch one or the client-side actions. In some embodiments, it creates a plurality of actionable search results configured to launch a plurality of the client side actions. Finally, the server system sends the actionable search result element(s) and at least one of the plurality of search results to the client system. Such a server system may also include program instructions to execute the additional options discussed above. 
     In some embodiments, a client system including one or more central processing units for executing programs, a display, and memory storing one or more programs be executed by the one or more central processing units is provided. The programs include instructions for performing the following. A visual query is received from an application such as an image capturing application. The client system creates a visual query from the image. Then the client system sends the visual query to a visual query search system. The visual query search system processes the visual query as discussed above. The client system receives from the visual query search system an actionable search result element configured to launch a client-side action. The actionable search result element corresponds to an entity in the visual query. The client system displays the actionable search result element on the display using a visual query client application. The client system then receives a user selection of the actionable search result element, and launches the client-side action corresponding to the selected actionable search result element. The client-side action is launched in a client-side application distinct from the visual query client application. Such a client system may also include program instructions to execute the additional options discussed above. 
     Some embodiments provide a computer readable storage medium storing one or more programs configured for execution by a computer. The programs include instructions for performing the following. A visual query is received from a client system. In some embodiments, the visual query is processed by sending it visual query to at least one search system implementing a visual query search process, and then the server receives a plurality of search results from one or more of the search systems. Whether or not the server system sends the visual query to the search systems, the server system identifies an entity in the visual query. It also identifies one or more client-side actions corresponding to the identified entity. Then it creates an actionable search result element configured to launch one or the client-side actions. In some embodiments, it creates a plurality of actionable search results configured to launch a plurality of the client side actions. Finally, the server system sends the actionable search result element(s) and at least one of the plurality of search results to the client system. Such a computer readable storage medium may also include program instructions to execute the additional options discussed above. 
     Some embodiments provide a computer readable storage medium storing one or more programs configured for execution by a computer. The programs include instructions for performing the following. A visual query is received from an application such as an image capturing application. The client system creates a visual query from the image. Then the client system sends the visual query to a visual query search system. The visual query search system processes the visual query as discussed above. The client system receives from the visual query search system an actionable search result element configured to launch a client-side action. The actionable search result element corresponds to an entity in the visual query. The client system displays the actionable search result element on a client display using a visual query client application. The client system then receives a user selection of the actionable search result element, and launches the client-side action corresponding to the selected actionable search result element. The client-side action is launched in a client-side application distinct from the visual query client application. Such a computer readable storage medium may also include program instructions to execute the additional options discussed above. 
     In another aspect, a computer-implemented method of processing a visual query includes performing the following steps on a server system having one or more processors and memory storing one or more programs for execution by the one or more processors. A visual query is received from a client system. Location information is also received from the client system. In some embodiments, the client system obtains location information from GPS information, cell tower information, and/or local wireless network information. The server system sends the visual query and the location information to a visual query search system. It then receives one or more search results in accordance with both the visual query and the location information from the visual query search system. The server system identifies, from the one or more search results, an entity in the visual query. It also identifies one or more client-side actions corresponding to the identified entity. Then the server system creates an actionable search result element configured to launch a respective client-side action of the identified one or more client-side actions. Finally, the server system sends the actionable search result element to the client system. 
     Some embodiments further involve sending, along with the actionable search result element, at least one of the one or more search results to the client system. In some embodiments, the search results include search results within a specified distance from the location information. In other embodiments, the search results include search results similar to the identified entity. In some embodiments, at least one of the one or more search results includes an actionable search results element configured to launch a client-side action corresponding to an entity in the search result. 
     In some embodiments, when the identified entity is a restaurant, the respective client-side action is one or more of: initiating a phone call, providing a review; initiating a reservation request, providing mapping information, launching the restaurant&#39;s website, providing additional information, and sharing any of the above. 
     Some embodiments further include receiving from the visual query search system enhanced location information based on the visual query and the location information. The server system then sends a search query to a location-based search system. The search query includes the enhanced location information. The search system receives and provides to the client one or more search results in accordance with the enhanced location information. 
     In some embodiments, the identified entity in the visual query can be a person, a name or other identifier associated with the person, a bar code, a logo, a business, an organization, a building, a group of buildings or physical structures, a postal address, a landmark, a geographical entity, a product, or a service. 
     In some embodiments, the actionable search result element is configured to add information to a contacts list, wherein the information is selected from a group consisting of one or more of: an email address, a phone number, a fax number, a postal address, a company name, an organization name, and a URL. 
     Optionally, when the identified entity is an identifier associated with an entity, such as a business, organization, or association, the one or more search results include a communication address associated with the entity, and the actionable search result element is configured to launch a communication using the communication address. 
     Some embodiments provide methods, systems, computer readable storage mediums, and graphical user interfaces (GUIs) provide the following. According to some embodiments, a computer-implemented method of processing a visual query includes performing the following steps performed on a client system having one or more processors, a display, and memory storing one or more programs for execution by the one or more processors. The client system receives an image. The image may be received from an image capturing application. The client system also receives location information. In some embodiments, the client system receives location information from GPS information, cell tower information, and/or local wireless network information. The client system creates a visual query from the image. It sends the visual query and the location information to a visual query search system. The visual query search system performs the operations discussed above. The client system receives from the visual query search system an actionable search result element configured to launch a client-side action. The actionable search result element corresponds to an entity in the visual query. The client system displays the actionable search result element on the display using a visual query client application. Then the client system receives a user selection of the actionable search result element and, in a client-side application distinct from the visual query client application, launches the client-side action corresponding to the selected actionable search result element. 
     In some embodiments, the client-side application is an email application, a browser application; a phone application; an instant messaging application; a social networking application, or a mapping application. 
     Some embodiments further include receiving from the visual query search system one or more search results in accordance with both the visual query and the location information. The client system then displays on the display, along with the actionable search result element, the one or more search results. 
     In some embodiments, a server system including one or more central processing units for executing programs and memory storing one or more programs be executed by the one or more central processing units is provided. The programs include instructions for performing the following. A visual query is received from a client system. Location information is also received from the client system. In some embodiments, the client system obtains location information from GPS information, cell tower information, and/or local wireless network information. The server system sends the visual query and the location information to a visual query search system. It then receives one or more search results in accordance with both the visual query and the location information from the visual query search system. The server system identifies, from the one or more search results, an entity in the visual query. It also identifies one or more client-side actions corresponding to the identified entity. Then the server system creates an actionable search result element configured to launch a respective client-side action of the identified one or more client-side actions. Finally, the server system sends the actionable search result element to the client system. Such a server system may also include program instructions to execute the additional options discussed above. 
     In some embodiments, a client system including one or more central processing units for executing programs, a display, and memory storing one or more programs be executed by the one or more central processing units is provided. The programs include instructions for performing the following. The client system receives an image. The image may be received from an image capturing application. The client system also receives location information. In some embodiments, the client system receives location information from GPS information, cell tower information, and/or local wireless network information. The client system creates a visual query from the image. It sends the visual query and the location information to a visual query search system. The visual query search system performs the operations discussed above. The client system receives from the visual query search system an actionable search result element configured to launch a client-side action. The actionable search result element corresponds to an entity in the visual query. The client system displays the actionable search result element on the display using a visual query client application. Then the client system receives a user selection of the actionable search result element. In a client-side application distinct from the visual query client application, the client system launches the client-side action corresponding to the selected actionable search result element. Such a client system may also include program instructions to execute the additional options discussed above. 
     Some embodiments provide a computer readable storage medium storing one or more programs configured for execution by a computer. The programs include instructions for performing the following. A visual query is received from a client system. Location information is also received from the client system. In some embodiments, the client system obtains location information from GPS information, cell tower information, and/or local wireless network information. The server system sends the visual query and the location information to a visual query search system. It then receives one or more search results in accordance with both the visual query and the location information from the visual query search system. The server system identifies, from the one or more search results, an entity in the visual query. It also identifies one or more client-side actions corresponding to the identified entity. Then the server system creates an actionable search result element configured to launch a respective client-side action of the identified one or more client-side actions. Finally, the server system sends the actionable search result element to the client system. Such a computer readable storage medium may also include program instructions to execute the additional options discussed above. 
     Some embodiments provide a computer readable storage medium storing one or more programs configured for execution by a computer. The programs include instructions for performing the following. The client system receives an image. The image may be received from an image capturing application. The client system also receives location information. In some embodiments, the client system receives location information from GPS information, cell tower information, and/or local wireless network information. The client system creates a visual query from the image. It sends the visual query and the location information to a visual query search system. The visual query search system performs the operations discussed above. The client system receives from the visual query search system an actionable search result element configured to launch a client-side action. The actionable search result element corresponds to an entity in the visual query. The client system displays the actionable search result element on a display using a visual query client application. Then the client system receives a user selection of the actionable search result element. In a client-side application distinct from the visual query client application, the client system launches the client-side action corresponding to the selected actionable search result element. Such a computer readable storage medium may also include program instructions to execute the additional options discussed above. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a block diagram illustrating a computer network that includes a visual query server system. 
         FIG. 2  is a flow diagram illustrating the process for responding to a visual query, in accordance with some embodiments. 
         FIG. 3  is a flow diagram illustrating the process for responding to a visual query with an interactive results document, in accordance with some embodiments. 
         FIG. 4  is a flow diagram illustrating the communications between a client and a visual query server system, in accordance with some embodiments. 
         FIG. 5  is a block diagram illustrating a client system, in accordance with some embodiments. 
         FIG. 6  is a block diagram illustrating a front end visual query processing server system, in accordance with some embodiments. 
         FIG. 7  is a block diagram illustrating a generic one of the parallel search systems utilized to process a visual query, in accordance with some embodiments. 
         FIG. 8  is a block diagram illustrating an OCR search system utilized to process a visual query, in accordance with some embodiments. 
         FIG. 9  is a block diagram illustrating a facial recognition search system utilized to process a visual query, in accordance with some embodiments. 
         FIG. 10  is a block diagram illustrating an image to terms search system utilized to process a visual query, in accordance with some embodiments. 
         FIG. 11  illustrates a client system with a screen shot of an exemplary visual query, in accordance with some embodiments. 
         FIGS. 12A and 12B  each illustrate a client system with a screen shot of an interactive results document with bounding boxes, in accordance with some embodiments. 
         FIG. 13  illustrates a client system with a screen shot of an interactive results document that is coded by type, in accordance with some embodiments. 
         FIG. 14  illustrates a client system with a screen shot of an interactive results document with labels, in accordance with some embodiments. 
         FIG. 15  illustrates a screen shot of an interactive results document and visual query displayed concurrently with a results list, in accordance with some embodiments. 
         FIGS. 16A and 16B  are flow diagrams illustrating the process for creating an actionable search result element, in accordance with some embodiments. 
         FIG. 17  illustrates a client system display of a results list and a plurality of actionable search result elements returned for a visual query including a business card, in accordance with some embodiments. 
         FIG. 18  illustrates a client system display of a results list and a plurality of actionable search result elements returned for a visual query including a 2D barcode, in accordance with some embodiments. 
         FIG. 19  illustrates a client system display of a results list and a plurality of actionable search result elements returned for a visual query including a book, in accordance with some embodiments. 
         FIG. 20  is a flow diagram illustrating communications between a client and a visual query server system for creating actionable search results with optional location information augmentation, in accordance with some embodiments. 
         FIG. 21  illustrates a client system display of a results list and a plurality of actionable search result elements returned for a street view visual query including a building, in accordance with some embodiments. 
         FIG. 22  illustrates a client system display of a plurality of actionable search result elements overlaying a visual query which are returned for a street view visual query including a building, in accordance with some embodiments. 
         FIG. 23  is a block diagram illustrating a location-augmented visual query processing server system, in accordance with some embodiments. 
         FIG. 24  is a block diagram illustrating a location-based query processing server system, in accordance with some embodiments. 
     
    
    
     Like reference numerals refer to corresponding parts throughout the drawings. 
     DESCRIPTION OF EMBODIMENTS 
     Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, components, circuits, and networks have not been described in detail so as not to unnecessarily obscure aspects of the embodiments. 
     It will also be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first contact could be termed a second contact, and, similarly, a second contact could be termed a first contact, without departing from the scope of the present invention. The first contact and the second contact are both contacts, but they are not the same contact. 
     The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the description of the invention and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term “and/or” as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. 
     As used herein, the term “if” may be construed to mean “when” or “upon” or “in response to determining” or “in response to detecting,” depending on the context. Similarly, the phrase “if it is determined” or “if (a stated condition or event) is detected” may be construed to mean “upon determining” or “in response to determining” or “upon detecting (the stated condition or event)” or “in response to detecting (the stated condition or event),” depending on the context. 
       FIG. 1  is a block diagram illustrating a computer network that includes a visual query server system according to some embodiments. The computer network  100  includes one or more client systems  102  and a visual query server system  106 . One or more communications networks  104  interconnect these components. The communications network  104  may be any of a variety of networks, including local area networks (LAN), wide area networks (WAN), wireless networks, wireline networks, the Internet, or a combination of such networks. 
     The client system  102  includes a client application  108 , which is executed by the client system, for receiving a visual query (e.g., visual query  1102  of  FIG. 11 ). A visual query is an image that is submitted as a query to a search engine or search system. Examples of visual queries, without limitations include photographs, scanned documents and images, and drawings. In some embodiments, the client application  108  is selected from the set consisting of a search application, a search engine plug-in for a browser application, and a search engine extension for a browser application. In some embodiments, the client application  108  is an “omnivorous” search box, which allows a user to drag and drop any format of image into the search box to be used as the visual query. 
     A client system  102  sends queries to and receives data from the visual query server system  106 . The client system  102  may be any computer or other device that is capable of communicating with the visual query server system  106 . Examples include, without limitation, desktop and notebook computers, mainframe computers, server computers, mobile devices such as mobile phones and personal digital assistants, network terminals, and set-top boxes. 
     The visual query server system  106  includes a front end visual query processing server  110 . The front end server  110  receives a visual query from the client  102 , and sends the visual query to a plurality of parallel search systems  112  for simultaneous processing. The search systems  112  each implement a distinct visual query search process and access their corresponding databases  114  as necessary to process the visual query by their distinct search process. For example, a face recognition search system  112 -A will access a facial image database  114 -A to look for facial matches to the image query. As will be explained in more detail with regard to  FIG. 9 , if the visual query contains a face, the facial recognition search system  112 -A will return one or more search results (e.g., names, matching faces, etc.) from the facial image database  114 -A. In another example, the optical character recognition (OCR) search system  112 -B, converts any recognizable text in the visual query into text for return as one or more search results. In the optical character recognition (OCR) search system  112 -B, an OCR database  114 -B may be accessed to recognize particular fonts or text patterns as explained in more detail with regard to  FIG. 8 . 
     Any number of parallel search systems  112  may be used. Some examples include a facial recognition search system  112 -A, an OCR search system  112 -B, an image-to-terms search system  112 -C (which may recognize an object or an object category), a product recognition search system (which may be configured to recognize 2-D images such as book covers and CDs and may also be configured to recognized 3-D images such as furniture), bar code recognition search system (which recognizes 1D and 2D style bar codes), a named entity recognition search system, landmark recognition (which may configured to recognize particular famous landmarks like the Eiffel Tower and may also be configured to recognize a corpus of specific images such as billboards), place recognition aided by geo-location information provided by a GPS receiver in the client system  102  or mobile phone network, a color recognition search system, and a similar image search system (which searches for and identifies images similar to a visual query). Further search systems can be added as additional parallel search systems, represented in  FIG. 1  by system  112 -N. All of the search systems, except the OCR search system, are collectively defined herein as search systems performing an image-match process. All of the search systems including the OCR search system are collectively referred to as query-by-image search systems. In some embodiments, the visual query server system  106  includes a facial recognition search system  112 -A, an OCR search system  112 -B, and at least one other query-by-image search system  112 . 
     The parallel search systems  112  each individually process the visual search query and return their results to the front end server system  110 . In some embodiments, the front end server  100  may perform one or more analyses on the search results such as one or more of: aggregating the results into a compound document, choosing a subset of results to display, and ranking the results as will be explained in more detail with regard to  FIG. 6 . The front end server  110  communicates the search results to the client system  102 . 
     The client system  102  presents the one or more search results to the user. The results may be presented on a display, by an audio speaker, or any other means used to communicate information to a user. The user may interact with the search results in a variety of ways. In some embodiments, the user&#39;s selections, annotations, and other interactions with the search results are transmitted to the visual query server system  106  and recorded along with the visual query in a query and annotation database  116 . Information in the query and annotation database can be used to improve visual query results. In some embodiments, the information from the query and annotation database  116  is periodically pushed to the parallel search systems  112 , which incorporate any relevant portions of the information into their respective individual databases  114 . 
     The computer network  100  optionally includes a term query server system  118 , for performing searches in response to term queries. A term query is a query containing one or more terms, as opposed to a visual query which contains an image. The term query server system  118  may be used to generate search results that supplement information produced by the various search engines in the visual query server system  106 . The results returned from the term query server system  118  may include any format. The term query server system  118  may include textual documents, images, video, etc. While term query server system  118  is shown as a separate system in  FIG. 1 , optionally the visual query server system  106  may include a term query server system  118 . 
     Additional information about the operation of the visual query server system  106  is provided below with respect to the flowcharts in  FIGS. 2-4 . 
       FIG. 2  is a flow diagram illustrating a visual query server system method for responding to a visual query, according to certain embodiments of the invention. Each of the operations shown in  FIG. 2  may correspond to instructions stored in a computer memory or computer readable storage medium. 
     The visual query server system receives a visual query from a client system ( 202 ). The client system, for example, may be a desktop computing device, a mobile device, or another similar device ( 204 ) as explained with reference to  FIG. 1 . An example visual query on an example client system is shown in  FIG. 11 . 
     The visual query is an image document of any suitable format. For example, the visual query can be a photograph, a screen shot, a scanned image, or a frame or a sequence of multiple frames of a video ( 206 ). In some embodiments, the visual query is a drawing produced by a content authoring program ( 736 ,  FIG. 5 ). As such, in some embodiments, the user “draws” the visual query, while in other embodiments the user scans or photographs the visual query. Some visual queries are created using an image generation application such as Acrobat, a photograph editing program, a drawing program, or an image editing program. For example, a visual query could come from a user taking a photograph of his friend on his mobile phone and then submitting the photograph as the visual query to the server system. The visual query could also come from a user scanning a page of a magazine, or taking a screen shot of a webpage on a desktop computer and then submitting the scan or screen shot as the visual query to the server system. In some embodiments, the visual query is submitted to the server system  106  through a search engine extension of a browser application, through a plug-in for a browser application, or by a search application executed by the client system  102 . Visual queries may also be submitted by other application programs (executed by a client system) that support or generate images which can be transmitted to a remotely located server by the client system. 
     The visual query can be a combination of text and non-text elements ( 208 ). For example, a query could be a scan of a magazine page containing images and text, such as a person standing next to a road sign. A visual query can include an image of a person&#39;s face, whether taken by a camera embedded in the client system or a document scanned by or otherwise received by the client system. A visual query can also be a scan of a document containing only text. The visual query can also be an image of numerous distinct subjects, such as several birds in a forest, a person and an object (e.g., car, park bench, etc.), a person and an animal (e.g., pet, farm animal, butterfly, etc.). Visual queries may have two or more distinct elements. For example, a visual query could include a barcode and an image of a product or product name on a product package. For example, the visual query could be a picture of a book cover that includes the title of the book, cover art, and a bar code. In some instances, one visual query will produce two or more distinct search results corresponding to different portions of the visual query, as discussed in more detail below. 
     The server system processes the visual query as follows. The front end server system sends the visual query to a plurality of parallel search systems for simultaneous processing ( 210 ). Each search system implements a distinct visual query search process, i.e., an individual search system processes the visual query by its own processing scheme. 
     In some embodiments, one of the search systems to which the visual query is sent for processing is an optical character recognition (OCR) search system. In some embodiments, one of the search systems to which the visual query is sent for processing is a facial recognition search system. In some embodiments, the plurality of search systems running distinct visual query search processes includes at least: optical character recognition (OCR), facial recognition, and another query-by-image process other than OCR and facial recognition ( 212 ). The other query-by-image process is selected from a set of processes that includes but is not limited to product recognition, bar code recognition, object-or-object-category recognition, named entity recognition, and color recognition ( 212 ). 
     In some embodiments, named entity recognition occurs as a post process of the OCR search system, wherein the text result of the OCR is analyzed for famous people, locations, objects and the like, and then the terms identified as being named entities are searched in the term query server system ( 118 ,  FIG. 1 ). In other embodiments, images of famous landmarks, logos, people, album covers, trademarks, etc. are recognized by an image-to-terms search system. In other embodiments, a distinct named entity query-by-image process separate from the image-to-terms search system is utilized. The object-or-object category recognition system recognizes generic result types like “car.” In some embodiments, this system also recognizes product brands, particular product models, and the like, and provides more specific descriptions, like “Porsche.” Some of the search systems could be special user specific search systems. For example, particular versions of color recognition and facial recognition could be a special search systems used by the blind. 
     The front end server system receives results from the parallel search systems ( 214 ). In some embodiments, the results are accompanied by a search score. For some visual queries, some of the search systems will find no relevant results. For example, if the visual query was a picture of a flower, the facial recognition search system and the bar code search system will not find any relevant results. In some embodiments, if no relevant results are found, a null or zero search score is received from that search system ( 216 ). In some embodiments, if the front end server does not receive a result from a search system after a pre-defined period of time (e.g., 0.2, 0.5, 1, 2 or 5 seconds), it will process the received results as if that timed out server produced a null search score and will process the received results from the other search systems. 
     Optionally, when at least two of the received search results meet pre-defined criteria, they are ranked ( 218 ). In some embodiments, one of the predefined criteria excludes void results. A pre-defined criterion is that the results are not void. In some embodiments, one of the predefined criteria excludes results having numerical score (e.g., for a relevance factor) that falls below a pre-defined minimum score. Optionally, the plurality of search results are filtered ( 220 ). In some embodiments, the results are only filtered if the total number of results exceeds a pre-defined threshold. In some embodiments, all the results are ranked but the results falling below a pre-defined minimum score are excluded. For some visual queries, the content of the results are filtered. For example, if some of the results contain private information or personal protected information, these results are filtered out. 
     Optionally, the visual query server system creates a compound search result ( 222 ). One embodiment of this is when more than one search system result is embedded in an interactive results document as explained with respect to  FIG. 3 . The term query server system ( 118 ,  FIG. 1 ) may augment the results from one of the parallel search systems with results from a term search, where the additional results are either links to documents or information sources, or text and/or images containing additional information that may be relevant to the visual query. Thus, for example, the compound search result may contain an OCR result and a link to a named entity in the OCR document ( 224 ). 
     In some embodiments, the OCR search system ( 112 -B,  FIG. 1 ) or the front end visual query processing server ( 110 ,  FIG. 1 ) recognizes likely relevant words in the text. For example, it may recognize named entities such as famous people or places. The named entities are submitted as query terms to the term query server system ( 118 ,  FIG. 1 ). In some embodiments, the term query results produced by the term query server system are embedded in the visual query result as a “link.” In some embodiments, the term query results are returned as separate links. For example, if a picture of a book cover were the visual query, it is likely that an object recognition search system will produce a high scoring hit for the book. As such a term query for the title of the book will be run on the term query server system  118  and the term query results are returned along with the visual query results. In some embodiments, the term query results are presented in a labeled group to distinguish them from the visual query results. The results may be searched individually, or a search may be performed using all the recognized named entities in the search query to produce particularly relevant additional search results. For example, if the visual query is a scanned travel brochure about Paris, the returned result may include links to the term query server system  118  for initiating a search on a term query “Notre Dame.” Similarly, compound search results include results from text searches for recognized famous images. For example, in the same travel brochure, live links to the term query results for famous destinations shown as pictures in the brochure like “Eiffel Tower” and “Louvre” may also be shown (even if the terms “Eiffel Tower” and “Louvre” did not appear in the brochure itself.) 
     The visual query server system then sends at least one result to the client system ( 226 ). Typically, if the visual query processing server receives a plurality of search results from at least some of the plurality of search systems, it will then send at least one of the plurality of search results to the client system. For some visual queries, only one search system will return relevant results. For example, in a visual query containing only an image of text, only the OCR server&#39;s results may be relevant. For some visual queries, only one result from one search system may be relevant. For example, only the product related to a scanned bar code may be relevant. In these instances, the front end visual processing server will return only the relevant search result(s). For some visual queries, a plurality of search results are sent to the client system, and the plurality of search results include search results from more than one of the parallel search systems ( 228 ). This may occur when more than one distinct image is in the visual query. For example, if the visual query were a picture of a person riding a horse, results for facial recognition of the person could be displayed along with object identification results for the horse. In some embodiments, all the results for a particular query by image search system are grouped and presented together. For example, the top N facial recognition results are displayed under a heading “facial recognition results” and the top N object recognition results are displayed together under a heading “object recognition results.” Alternatively, as discussed below, the search results from a particular image search system may be grouped by image region. For example, if the visual query includes two faces, both of which produce facial recognition results, the results for each face would be presented as a distinct group. For some visual queries (e.g., a visual query including an image of both text and one or more objects), the search results may include both OCR results and one or more image-match results ( 230 ). 
     In some embodiments, the user may wish to learn more about a particular search result. For example, if the visual query was a picture of a dolphin and the “image to terms” search system returns the following terms “water,” “dolphin,” “blue,” and “Flipper;” the user may wish to run a text based query term search on “Flipper.” When the user wishes to run a search on a term query (e.g., as indicated by the user clicking on or otherwise selecting a corresponding link in the search results), the query term server system ( 118 , FIG.  1 ) is accessed, and the search on the selected term(s) is run. The corresponding search term results are displayed on the client system either separately or in conjunction with the visual query results ( 232 ). In some embodiments, the front end visual query processing server ( 110 ,  FIG. 1 ) automatically (i.e., without receiving any user command, other than the initial visual query) chooses one or more top potential text results for the visual query, runs those text results on the term query server system  118 , and then returns those term query results along with the visual query result to the client system as a part of sending at least one search result to the client system ( 232 ). In the example above, if “Flipper” was the first term result for the visual query picture of a dolphin, the front end server runs a term query on “Flipper” and returns those term query results along with the visual query results to the client system. This embodiment, wherein a term result that is considered likely to be selected by the user is automatically executed prior to sending search results from the visual query to the user, saves the user time. In some embodiments, these results are displayed as a compound search result ( 222 ) as explained above. In other embodiments, the results are part of a search result list instead of or in addition to a compound search result. 
       FIG. 3  is a flow diagram illustrating the process for responding to a visual query with an interactive results document. The first three operations ( 202 ,  210 ,  214 ) are described above with reference to  FIG. 2 . From the search results which are received from the parallel search systems ( 214 ), an interactive results document is created ( 302 ). 
     Creating the interactive results document ( 302 ) will now be described in detail. For some visual queries, the interactive results document includes one or more visual identifiers of respective sub-portions of the visual query. Each visual identifier has at least one user selectable link to at least one of the search results. A visual identifier identifies a respective sub-portion of the visual query. For some visual queries, the interactive results document has only one visual identifier with one user selectable link to one or more results. In some embodiments, a respective user selectable link to one or more of the search results has an activation region, and the activation region corresponds to the sub-portion of the visual query that is associated with a corresponding visual identifier. 
     In some embodiments, the visual identifier is a bounding box ( 304 ). In some embodiments, the bounding box encloses a sub-portion of the visual query as shown in  FIG. 12A . The bounding box need not be a square or rectangular box shape but can be any sort of shape including circular, oval, conformal (e.g., to an object in, entity in or region of the visual query), irregular or any other shape as shown in  FIG. 12B . For some visual queries, the bounding box outlines the boundary of an identifiable entity in a sub-portion of the visual query ( 306 ). In some embodiments, each bounding box includes a user selectable link to one or more search results, where the user selectable link has an activation region corresponding to a sub-portion of the visual query surrounded by the bounding box. When the space inside the bounding box (the activation region of the user selectable link) is selected by the user, search results that correspond to the image in the outlined sub-portion are returned. 
     In some embodiments, the visual identifier is a label ( 307 ) as shown in  FIG. 14 . In some embodiments, label includes at least one term associated with the image in the respective sub-portion of the visual query. Each label is formatted for presentation in the interactive results document on or near the respective sub-portion. In some embodiments, the labels are color coded. 
     In some embodiments, each respective visual identifiers is formatted for presentation in a visually distinctive manner in accordance with a type of recognized entity in the respective sub-portion of the visual query. For example, as shown in  FIG. 13 , bounding boxes around a product, a person, a trademark, and the two textual areas are each presented with distinct cross-hatching patterns, representing differently colored transparent bounding boxes. In some embodiments, the visual identifiers are formatted for presentation in visually distinctive manners such as overlay color, overlay pattern, label background color, label background pattern, label font color, and border color. 
     In some embodiments, the user selectable link in the interactive results document is a link to a document or object that contains one or more results related to the corresponding sub-portion of the visual query ( 308 ). In some embodiments, at least one search result includes data related to the corresponding sub-portion of the visual query. As such, when the user selects the selectable link associated with the respective sub-portion, the user is directed to the search results corresponding to the recognized entity in the respective sub-portion of the visual query. 
     For example, if a visual query was a photograph of a bar code, there may be portions of the photograph which are irrelevant parts of the packaging upon which the bar code was affixed. The interactive results document may include a bounding box around only the bar code. When the user selects inside the outlined bar code bounding box, the bar code search result is displayed. The bar code search result may include one result, the name of the product corresponding to that bar code, or the bar code results may include several results such as a variety of places in which that product can be purchased, reviewed, etc. 
     In some embodiments, when the sub-portion of the visual query corresponding to a respective visual identifier contains text comprising one or more terms, the search results corresponding to the respective visual identifier include results from a term query search on at least one of the terms in the text. In some embodiments, when the sub-portion of the visual query corresponding to a respective visual identifier contains a person&#39;s face for which at least one match (i.e., search result) is found that meets predefined reliability (or other) criteria, the search results corresponding to the respective visual identifier include one or more of: name, handle, contact information, account information, address information, current location of a related mobile device associated with the person whose face is contained in the selectable sub-portion, other images of the person whose face is contained in the selectable sub-portion, and potential image matches for the person&#39;s face. In some embodiments, when the sub-portion of the visual query corresponding to a respective visual identifier contains a product for which at least one match (i.e., search result) is found that meets predefined reliability (or other) criteria, the search results corresponding to the respective visual identifier include one or more of: product information, a product review, an option to initiate purchase of the product, an option to initiate a bid on the product, a list of similar products, and a list of related products. 
     Optionally, a respective user selectable link in the interactive results document includes anchor text, which is displayed in the document without having to activate the link. The anchor text provides information, such as a key word or term, related to the information obtained when the link is activated. Anchor text may be displayed as part of the label ( 307 ), or in a portion of a bounding box ( 304 ), or as additional information displayed when a user hovers a cursor over a user selectable link for a pre-determined period of time such as 1 second. 
     Optionally, a respective user selectable link in the interactive results document is a link to a search engine for searching for information or documents corresponding to a text-based query (sometimes herein called a term query). Activation of the link causes execution of the search by the search engine, where the query and the search engine are specified by the link (e.g., the search engine is specified by a URL in the link and the text-based search query is specified by a URL parameter of the link), with results returned to the client system. Optionally, the link in this example may include anchor text specifying the text or terms in the search query. 
     In some embodiments, the interactive results document produced in response to a visual query can include a plurality of links that correspond to results from the same search system. For example, a visual query may be an image or picture of a group of people. The interactive results document may include bounding boxes around each person, which when activated returns results from the facial recognition search system for each face in the group. For some visual queries, a plurality of links in the interactive results document corresponds to search results from more than one search system ( 310 ). For example, if a picture of a person and a dog was submitted as the visual query, bounding boxes in the interactive results document may outline the person and the dog separately. When the person (in the interactive results document) is selected, search results from the facial recognition search system are retuned, and when the dog (in the interactive results document) is selected, results from the image-to-terms search system are returned. For some visual queries, the interactive results document contains an OCR result and an image match result ( 312 ). For example, if a picture of a person standing next to a sign were submitted as a visual query, the interactive results document may include visual identifiers for the person and for the text in the sign. Similarly, if a scan of a magazine was used as the visual query, the interactive results document may include visual identifiers for photographs or trademarks in advertisements on the page as well as a visual identifier for the text of an article also on that page. 
     After the interactive results document has been created, it is sent to the client system ( 314 ). In some embodiments, the interactive results document (e.g., document  1200 ,  FIG. 15 ) is sent in conjunction with a list of search results from one or more parallel search systems, as discussed above with reference to  FIG. 2 . In some embodiments, the interactive results document is displayed at the client system above or otherwise adjacent to a list of search results from one or more parallel search systems ( 315 ) as shown in  FIG. 15 . 
     Optionally, the user will interact with the results document by selecting a visual identifier in the results document. The server system receives from the client system information regarding the user selection of a visual identifier in the interactive results document ( 316 ). As discussed above, in some embodiments, the link is activated by selecting an activation region inside a bounding box. In other embodiments, the link is activated by a user selection of a visual identifier of a sub-portion of the visual query, which is not a bounding box. In some embodiments, the linked visual identifier is a hot button, a label located near the sub-portion, an underlined word in text, or other representation of an object or subject in the visual query. 
     In embodiments where the search results list is presented with the interactive results document ( 315 ), when the user selects a user selectable link ( 316 ), the search result in the search results list corresponding to the selected link is identified. In some embodiments, the cursor will jump or automatically move to the first result corresponding to the selected link. In some embodiments in which the display of the client  102  is too small to display both the interactive results document and the entire search results list, selecting a link in the interactive results document causes the search results list to scroll or jump so as to display at least a first result corresponding to the selected link. In some other embodiments, in response to user selection of a link in the interactive results document, the results list is reordered such that the first result corresponding to the link is displayed at the top of the results list. 
     In some embodiments, when the user selects the user selectable link ( 316 ) the visual query server system sends at least a subset of the results, related to a corresponding sub-portion of the visual query, to the client for display to the user ( 318 ). In some embodiments, the user can select multiple visual identifiers concurrently and will receive a subset of results for all of the selected visual identifiers at the same time. In other embodiments, search results corresponding to the user selectable links are preloaded onto the client prior to user selection of any of the user selectable links so as to provide search results to the user virtually instantaneously in response to user selection of one or more links in the interactive results document. 
       FIG. 4  is a flow diagram illustrating the communications between a client and a visual query server system. The client  102  receives a visual query from a user/querier ( 402 ). In some embodiments, visual queries can only be accepted from users who have signed up for or “opted in” to the visual query system. In some embodiments, searches for facial recognition matches are only performed for users who have signed up for the facial recognition visual query system, while other types of visual queries are performed for anyone regardless of whether they have “opted in” to the facial recognition portion. 
     As explained above, the format of the visual query can take many forms. The visual query will likely contain one or more subjects located in sub-portions of the visual query document. For some visual queries, the client system  102  performs type recognition pre-processing on the visual query ( 404 ). In some embodiments, the client system  102  searches for particular recognizable patterns in this pre-processing system. For example, for some visual queries the client may recognize colors. For some visual queries the client may recognize that a particular sub-portion is likely to contain text (because that area is made up of small dark characters surrounded by light space etc.) The client may contain any number of pre-processing type recognizers, or type recognition modules. In some embodiments, the client will have a type recognition module (barcode recognition  406 ) for recognizing bar codes. It may do so by recognizing the distinctive striped pattern in a rectangular area. In some embodiments, the client will have a type recognition module (face detection  408 ) for recognizing that a particular subject or sub-portion of the visual query is likely to contain a face. 
     In some embodiments, the recognized “type” is returned to the user for verification. For example, the client system  102  may return a message stating “a bar code has been found in your visual query, are you interested in receiving bar code query results?” In some embodiments, the message may even indicate the sub-portion of the visual query where the type has been found. In some embodiments, this presentation is similar to the interactive results document discussed with reference to  FIG. 3 . For example, it may outline a sub-portion of the visual query and indicate that the sub-portion is likely to contain a face, and ask the user if they are interested in receiving facial recognition results. 
     After the client  102  performs the optional pre-processing of the visual query, the client sends the visual query to the visual query server system  106 , specifically to the front end visual query processing server  110 . In some embodiments, if pre-processing produced relevant results, i.e., if one of the type recognition modules produced results above a certain threshold, indicating that the query or a sub-portion of the query is likely to be of a particular type (face, text, barcode etc.), the client will pass along information regarding the results of the pre-processing. For example, the client may indicate that the face recognition module is 75% sure that a particular sub-portion of the visual query contains a face. More generally, the pre-processing results, if any, include one or more subject type values (e.g., bar code, face, text, etc.). Optionally, the pre-processing results sent to the visual query server system include one or more of: for each subject type value in the pre-processing results, information identifying a sub-portion of the visual query corresponding to the subject type value, and for each subject type value in the pre-processing results, a confidence value indicating a level of confidence in the subject type value and/or the identification of a corresponding sub-portion of the visual query. 
     The front end server  110  receives the visual query from the client system ( 202 ). The visual query received may contain the pre-processing information discussed above. As described above, the front end server sends the visual query to a plurality of parallel search systems ( 210 ). If the front end server  110  received pre-processing information regarding the likelihood that a sub-portion contained a subject of a certain type, the front end server may pass this information along to one or more of the parallel search systems. For example, it may pass on the information that a particular sub-portion is likely to be a face so that the facial recognition search system  112 -A can process that subsection of the visual query first. Similarly, sending the same information (that a particular sub-portion is likely to be a face) may be used by the other parallel search systems to ignore that sub-portion or analyze other sub-portions first. In some embodiments, the front end server will not pass on the pre-processing information to the parallel search systems, but will instead use this information to augment the way in which it processes the results received from the parallel search systems. 
     As explained with reference to  FIG. 2 , for at some visual queries, the front end server  110  receives a plurality of search results from the parallel search systems ( 214 ). The front end server may then perform a variety of ranking and filtering, and may create an interactive search result document as explained with reference to  FIGS. 2 and 3 . If the front end server  110  received pre-processing information regarding the likelihood that a sub-portion contained a subject of a certain type, it may filter and order by giving preference to those results that match the pre-processed recognized subject type. If the user indicated that a particular type of result was requested, the front end server will take the user&#39;s requests into account when processing the results. For example, the front end server may filter out all other results if the user only requested bar code information, or the front end server will list all results pertaining to the requested type prior to listing the other results. If an interactive visual query document is returned, the server may pre-search the links associated with the type of result the user indicated interest in, while only providing links for performing related searches for the other subjects indicated in the interactive results document. Then the front end server  110  sends the search results to the client system ( 226 ). 
     The client  102  receives the results from the server system ( 412 ). When applicable, these results will include the results that match the type of result found in the pre-processing stage. For example, in some embodiments they will include one or more bar code results ( 414 ) or one or more facial recognition results ( 416 ). If the client&#39;s pre-processing modules had indicated that a particular type of result was likely, and that result was found, the found results of that type will be listed prominently. 
     Optionally the user will select or annotate one or more of the results ( 418 ). The user may select one search result, may select a particular type of search result, and/or may select a portion of an interactive results document ( 420 ). Selection of a result is implicit feedback that the returned result was relevant to the query. Such feedback information can be utilized in future query processing operations. An annotation provides explicit feedback about the returned result that can also be utilized in future query processing operations. Annotations take the form of corrections of portions of the returned result (like a correction to a mis-OCRed word) or a separate annotation (either free form or structured.) 
     The user&#39;s selection of one search result, generally selecting the “correct” result from several of the same type (e.g., choosing the correct result from a facial recognition server), is a process that is referred to as a selection among interpretations. The user&#39;s selection of a particular type of search result, generally selecting the result “type” of interest from several different types of returned results (e.g., choosing the OCRed text of an article in a magazine rather than the visual results for the advertisements also on the same page), is a process that is referred to as disambiguation of intent. A user may similarly select particular linked words (such as recognized named entities) in an OCRed document as explained in detail with reference to  FIG. 8 . 
     The user may alternatively or additionally wish to annotate particular search results. This annotation may be done in freeform style or in a structured format ( 422 ). The annotations may be descriptions of the result or may be reviews of the result. For example, they may indicate the name of subject(s) in the result, or they could indicate “this is a good book” or “this product broke within a year of purchase.” Another example of an annotation is a user-drawn bounding box around a sub-portion of the visual query and user-provided text identifying the object or subject inside the bounding box. User annotations are explained in more detail with reference to  FIG. 5 . 
     The user selections of search results and other annotations are sent to the server system ( 424 ). The front end server  110  receives the selections and annotations and further processes them ( 426 ). If the information was a selection of an object, sub-region or term in an interactive results document, further information regarding that selection may be requested, as appropriate. For example, if the selection was of one visual result, more information about that visual result would be requested. If the selection was a word (either from the OCR server or from the Image-to-Terms server) a textual search of that word would be sent to the term query server system  118 . If the selection was of a person from a facial image recognition search system, that person&#39;s profile would be requested. If the selection was for a particular portion of an interactive search result document, the underlying visual query results would be requested. 
     If the server system receives an annotation, the annotation is stored in a query and annotation database  116 , explained with reference to  FIG. 5 . Then the information from the annotation database  116  is periodically copied to individual annotation databases for one or more of the parallel server systems, as discussed below with reference to  FIGS. 7-10 . 
       FIG. 5  is a block diagram illustrating a client system  102  in accordance with one embodiment of the present invention. The client system  102  typically includes one or more processing units (CPU&#39;s)  702 , one or more network or other communications interfaces  704 , memory  712 , and one or more communication buses  714  for interconnecting these components. The client system  102  includes a user interface  705 . The user interface  705  includes a display device  706  and optionally includes an input means such as a keyboard, mouse, or other input buttons  708 . Alternatively or in addition the display device  706  includes a touch sensitive surface  709 , in which case the display  706 / 709  is a touch sensitive display. In client systems that have a touch sensitive display  706 / 709 , a physical keyboard is optional (e.g., a soft keyboard may be displayed when keyboard entry is needed). Furthermore, some client systems use a microphone and voice recognition to supplement or replace the keyboard. Optionally, the client  102  includes a GPS (global positioning satellite) receiver, or other location detection apparatus  707  for determining the location of the client system  102 . In some embodiments, visual query search services are provided that require the client system  102  to provide the visual query server system to receive location information indicating the location of the client system  102 . 
     The client system  102  also includes an image capture device  710  such as a camera or scanner. Memory  712  includes high-speed random access memory, such as DRAM, SRAM, DDR RAM or other random access solid state memory devices; and may include non-volatile memory, such as one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or other non-volatile solid state storage devices. Memory  712  may optionally include one or more storage devices remotely located from the CPU(s)  702 . Memory  712 , or alternately the non-volatile memory device(s) within memory  712 , comprises a non-transitory computer readable storage medium. In some embodiments, memory  712  or the computer readable storage medium of memory  712  stores the following programs, modules and data structures, or a subset thereof:
         an operating system  716  that includes procedures for handling various basic system services and for performing hardware dependent tasks;   a network communication module  718  that is used for connecting the client system  102  to other computers via the one or more communication network interfaces  704  (wired or wireless) and one or more communication networks, such as the Internet, other wide area networks, local area networks, metropolitan area networks, and so on;   a image capture module  720  for processing a respective image captured by the image capture device/camera  710 , where the respective image may be sent (e.g., by a client application module) as a visual query to the visual query server system;   one or more client application modules  722  for handling various aspects of querying by image, including but not limited to: a query-by-image submission module  724  for submitting visual queries to the visual query server system; optionally a region of interest selection module  725  that detects a selection (such as a gesture on the touch sensitive display  706 / 709 ) of a region of interest in an image and prepares that region of interest as a visual query; a results browser  726  for displaying the results of the visual query; and optionally an annotation module  728  with optional modules for structured annotation text entry  730  such as filling in a form or for freeform annotation text entry  732 , which can accept annotations from a variety of formats, and an image region selection module  734  (sometimes referred to herein as a result selection module) which allows a user to select a particular sub-portion of an image for annotation;   an optional content authoring application(s)  736  that allow a user to author a visual query by creating or editing an image rather than just capturing one via the image capture device  710 ; optionally, one or such applications  736  may include instructions that enable a user to select a sub-portion of an image for use as a visual query;   an optional local image analysis module  738  that pre-processes the visual query before sending it to the visual query server system. The local image analysis may recognize particular types of images, or sub-regions within an image. Examples of image types that may be recognized by such modules  738  include one or more of: facial type (facial image recognized within visual query), bar code type (bar code recognized within visual query), and text type (text recognized within visual query); and   additional optional client applications  740  such as an email application, a phone application, a browser application, a mapping application, instant messaging application, social networking application etc. In some embodiments, the application corresponding to an appropriate actionable search result can be launched or accessed when the actionable search result is selected.       

     Optionally, the image region selection module  734  which allows a user to select a particular sub-portion of an image for annotation, also allows the user to choose a search result as a “correct” hit without necessarily further annotating it. For example, the user may be presented with a top N number of facial recognition matches and may choose the correct person from that results list. For some search queries, more than one type of result will be presented, and the user will choose a type of result. For example, the image query may include a person standing next to a tree, but only the results regarding the person is of interest to the user. Therefore, the image selection module  734  allows the user to indicate which type of image is the “correct” type—i.e., the type he is interested in receiving. The user may also wish to annotate the search result by adding personal comments or descriptive words using either the annotation text entry module  730  (for filling in a form) or freeform annotation text entry module  732 . 
     In some embodiments, the optional local image analysis module  738  is a portion of the client application ( 108 ,  FIG. 1 ). Furthermore, in some embodiments the optional local image analysis module  738  includes one or more programs to perform local image analysis to pre-process or categorize the visual query or a portion thereof. For example, the client application  722  may recognize that the image contains a bar code, a face, or text, prior to submitting the visual query to a search engine. In some embodiments, when the local image analysis module  738  detects that the visual query contains a particular type of image, the module asks the user if they are interested in a corresponding type of search result. For example, the local image analysis module  738  may detect a face based on its general characteristics (i.e., without determining which person&#39;s face) and provides immediate feedback to the user prior to sending the query on to the visual query server system. It may return a result like, “A face has been detected, are you interested in getting facial recognition matches for this face?” This may save time for the visual query server system ( 106 ,  FIG. 1 ). For some visual queries, the front end visual query processing server ( 110 ,  FIG. 1 ) only sends the visual query to the search system  112  corresponding to the type of image recognized by the local image analysis module  738 . In other embodiments, the visual query to the search system  112  may send the visual query to all of the search systems  112 A-N, but will rank results from the search system  112  corresponding to the type of image recognized by the local image analysis module  738 . In some embodiments, the manner in which local image analysis impacts on operation of the visual query server system depends on the configuration of the client system, or configuration or processing parameters associated with either the user or the client system. Furthermore, the actual content of any particular visual query and the results produced by the local image analysis may cause different visual queries to be handled differently at either or both the client system and the visual query server system. 
     In some embodiments, bar code recognition is performed in two steps, with analysis of whether the visual query includes a bar code performed on the client system at the local image analysis module  738 . Then the visual query is passed to a bar code search system only if the client determines the visual query is likely to include a bar code. In other embodiments, the bar code search system processes every visual query. 
     Optionally, the client system  102  includes additional client applications  740 . 
       FIG. 6  is a block diagram illustrating a front end visual query processing server system  110  in accordance with one embodiment of the present invention. The front end server  110  typically includes one or more processing units (CPU&#39;s)  802 , one or more network or other communications interfaces  804 , memory  812 , and one or more communication buses  814  for interconnecting these components. Memory  812  includes high-speed random access memory, such as DRAM, SRAM, DDR RAM or other random access solid state memory devices; and may include non-volatile memory, such as one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or other non-volatile solid state storage devices. Memory  812  may optionally include one or more storage devices remotely located from the CPU(s)  802 . Memory  812 , or alternately the non-volatile memory device(s) within memory  812 , comprises a non-transitory computer readable storage medium. In some embodiments, memory  812  or the computer readable storage medium of memory  812  stores the following programs, modules and data structures, or a subset thereof:
         an operating system  816  that includes procedures for handling various basic system services and for performing hardware dependent tasks;   a network communication module  818  that is used for connecting the front end server system  110  to other computers via the one or more communication network interfaces  804  (wired or wireless) and one or more communication networks, such as the Internet, other wide area networks, local area networks, metropolitan area networks, and so on;   a query manager  820  for handling the incoming visual queries from the client system  102  and sending them to two or more parallel search systems; as described elsewhere in this document, in some special situations a visual query may be directed to just one of the search systems, such as when the visual query includes an client-generated instruction (e.g., “facial recognition search only”);   a results filtering module  822  for optionally filtering the results from the one or more parallel search systems and sending the top or “relevant” results to the client system  102  for presentation;   a results ranking and formatting module  824  for optionally ranking the results from the one or more parallel search systems and for formatting the results for presentation;   a results document creation module  826 , is used when appropriate, to create an interactive search results document; module  826  may include sub-modules, including but not limited to a bounding box creation module  828  and a link creation module  830 ;   a label creation module  831  for creating labels that are visual identifiers of respective sub-portions of a visual query;   an annotation module  832  for receiving annotations from a user and sending them to an annotation database  116 ;   an actionable search results module  838  for generating, in response to a visual query, one or more actionable search result elements, each configured to launch a client-side action; examples of actionable search result elements are buttons to initiate a telephone call, to initiate email message, to map an address, to make a restaurant reservation, and to provide an option to purchase a product; and   a query and annotation database  116  which comprises the database itself  834  and an index to the database  836 .       

     The results ranking and formatting module  824  ranks the results returned from the one or more parallel search systems ( 112 -A- 112 -N,  FIG. 1 ). As already noted above, for some visual queries, only the results from one search system may be relevant. In such an instance, only the relevant search results from that one search system are ranked. For some visual queries, several types of search results may be relevant. In these instances, in some embodiments, the results ranking and formatting module  824  ranks all of the results from the search system having the most relevant result (e.g., the result with the highest relevance score) above the results for the less relevant search systems. In other embodiments, the results ranking and formatting module  824  ranks a top result from each relevant search system above the remaining results. In some embodiments, the results ranking and formatting module  824  ranks the results in accordance with a relevance score computed for each of the search results. For some visual queries, augmented textual queries are performed in addition to the searching on parallel visual search systems. In some embodiments, when textual queries are also performed, their results are presented in a manner visually distinctive from the visual search system results. 
     The results ranking and formatting module  824  also formats the results. In some embodiments, the results are presented in a list format. In some embodiments, the results are presented by means of an interactive results document. In some embodiments, both an interactive results document and a list of results are presented. In some embodiments, the type of query dictates how the results are presented. For example, if more than one searchable subject is detected in the visual query, then an interactive results document is produced, while if only one searchable subject is detected the results will be displayed in list format only. 
     The results document creation module  826  is used to create an interactive search results document. The interactive search results document may have one or more detected and searched subjects. The bounding box creation module  828  creates a bounding box around one or more of the searched subjects. The bounding boxes may be rectangular boxes, or may outline the shape(s) of the subject(s). The link creation module  830  creates links to search results associated with their respective subject in the interactive search results document. In some embodiments, clicking within the bounding box area activates the corresponding link inserted by the link creation module. 
     The query and annotation database  116  contains information that can be used to improve visual query results. In some embodiments, the user may annotate the image after the visual query results have been presented. Furthermore, in some embodiments the user may annotate the image before sending it to the visual query search system. Pre-annotation may help the visual query processing by focusing the results, or running text based searches on the annotated words in parallel with the visual query searches. In some embodiments, annotated versions of a picture can be made public (e.g., when the user has given permission for publication, for example by designating the image and annotation(s) as not private), so as to be returned as a potential image match hit. For example, if a user takes a picture of a flower and annotates the image by giving detailed genus and species information about that flower, the user may want that image to be presented to anyone who performs a visual query research looking for that flower. In some embodiments, the information from the query and annotation database  116  is periodically pushed to the parallel search systems  112 , which incorporate relevant portions of the information (if any) into their respective individual databases  114 . 
       FIG. 7  is a block diagram illustrating one of the parallel search systems utilized to process a visual query.  FIG. 7  illustrates a “generic” server system  112 -N in accordance with one embodiment of the present invention. This server system is generic only in that it represents any one of the visual query search servers  112 -N. The generic server system  112 -N typically includes one or more processing units (CPU&#39;s)  502 , one or more network or other communications interfaces  504 , memory  512 , and one or more communication buses  514  for interconnecting these components. Memory  512  includes high-speed random access memory, such as DRAM, SRAM, DDR RAM or other random access solid state memory devices; and may include non-volatile memory, such as one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or other non-volatile solid state storage devices. Memory  512  may optionally include one or more storage devices remotely located from the CPU(s)  502 . Memory  512 , or alternately the non-volatile memory device(s) within memory  512 , comprises a non-transitory computer readable storage medium. In some embodiments, memory  512  or the computer readable storage medium of memory  512  stores the following programs, modules and data structures, or a subset thereof:
         an operating system  516  that includes procedures for handling various basic system services and for performing hardware dependent tasks;   a network communication module  518  that is used for connecting the generic server system  112 -N to other computers via the one or more communication network interfaces  504  (wired or wireless) and one or more communication networks, such as the Internet, other wide area networks, local area networks, metropolitan area networks, and so on;   a search application  520  specific to the particular server system, it may for example be a bar code search application, a color recognition search application, a product recognition search application, an object-or-object category search application, or the like;   an optional index  522  if the particular search application utilizes an index;   an optional image database  524  for storing the images relevant to the particular search application, where the image data stored, if any, depends on the search process type;   an optional results ranking module  526  (sometimes called a relevance scoring module) for ranking the results from the search application, the ranking module may assign a relevancy score for each result from the search application, and if no results reach a pre-defined minimum score, may return a null or zero value score to the front end visual query processing server indicating that the results from this server system are not relevant; and   an annotation module  528  for receiving annotation information from an annotation database ( 116 ,  FIG. 1 ) determining if any of the annotation information is relevant to the particular search application and incorporating any determined relevant portions of the annotation information into the respective annotation database  530 .       

       FIG. 8  is a block diagram illustrating an OCR search system  112 -B utilized to process a visual query in accordance with one embodiment of the present invention. The OCR search system  112 -B typically includes one or more processing units (CPU&#39;s)  602 , one or more network or other communications interfaces  604 , memory  612 , and one or more communication buses  614  for interconnecting these components. Memory  612  includes high-speed random access memory, such as DRAM, SRAM, DDR RAM or other random access solid state memory devices; and may include non-volatile memory, such as one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or other non-volatile solid state storage devices. Memory  612  may optionally include one or more storage devices remotely located from the CPU(s)  602 . Memory  612 , or alternately the non-volatile memory device(s) within memory  612 , comprises a non-transitory computer readable storage medium. In some embodiments, memory  612  or the computer readable storage medium of memory  612  stores the following programs, modules and data structures, or a subset thereof:
         an operating system  616  that includes procedures for handling various basic system services and for performing hardware dependent tasks;   a network communication module  618  that is used for connecting the OCR search system  112 -B to other computers via the one or more communication network interfaces  604  (wired or wireless) and one or more communication networks, such as the Internet, other wide area networks, local area networks, metropolitan area networks, and so on;   an Optical Character Recognition (OCR) module  620  which tries to recognize text in the visual query, and converts the images of letters into characters;   an optional OCR database  114 -B which is utilized by the OCR module  620  to recognize particular fonts, text patterns, and other characteristics unique to letter recognition;   an optional spell check module  622  which improves the conversion of images of letters into characters by checking the converted words against a dictionary and replacing potentially mis-converted letters in words that otherwise match a dictionary word;   an optional named entity recognition module  624  which searches for named entities within the converted text, sends the recognized named entities as terms in a term query to the term query server system ( 118 ,  FIG. 1 ), and provides the results from the term query server system as links embedded in the OCRed text associated with the recognized named entities;   an optional text match application  632  which improves the conversion of images of letters into characters by checking converted segments (such as converted sentences and paragraphs) against a database of text segments and replacing potentially mis-converted letters in OCRed text segments that otherwise match a text match application text segment, in some embodiments the text segment found by the text match application is provided as a link to the user (for example, if the user scanned one page of the New York Times, the text match application may provide a link to the entire posted article on the New York Times website);   a results ranking and formatting module  626  for formatting the OCRed results for presentation and formatting optional links to named entities, and also optionally ranking any related results from the text match application; and   an optional annotation module  628  for receiving annotation information from an annotation database ( 116 ,  FIG. 1 ) determining if any of the annotation information is relevant to the OCR search system and incorporating any determined relevant portions of the annotation information into the respective annotation database  630 .       

       FIG. 9  is a block diagram illustrating a facial recognition search system  112 -A utilized to process a visual query in accordance with one embodiment of the present invention. The facial recognition search system  112 -A typically includes one or more processing units (CPU&#39;s)  902 , one or more network or other communications interfaces  904 , memory  912 , and one or more communication buses  914  for interconnecting these components. Memory  912  includes high-speed random access memory, such as DRAM, SRAM, DDR RAM or other random access solid state memory devices; and may include non-volatile memory, such as one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or other non-volatile solid state storage devices. Memory  912  may optionally include one or more storage devices remotely located from the CPU(s)  902 . Memory  912 , or alternately the non-volatile memory device(s) within memory  912 , comprises a non-transitory computer readable storage medium. In some embodiments, memory  912  or the computer readable storage medium of memory  912  stores the following programs, modules and data structures, or a subset thereof:
         an operating system  916  that includes procedures for handling various basic system services and for performing hardware dependent tasks;   a network communication module  918  that is used for connecting the facial recognition search system  112 -A to other computers via the one or more communication network interfaces  904  (wired or wireless) and one or more communication networks, such as the Internet, other wide area networks, local area networks, metropolitan area networks, and so on;   a facial recognition search application  920  for searching for facial images matching the face(s) presented in the visual query in a facial image database  114 -A and searches the social network database  922  for information regarding each match found in the facial image database  114 -A.   a facial image database  114 -A for storing one or more facial images for a plurality of users; optionally, the facial image database includes facial images for people other than users, such as family members and others known by users and who have been identified as being present in images included in the facial image database  114 -A; optionally, the facial image database includes facial images obtained from external sources, such as vendors of facial images that are legally in the public domain;   optionally, a social network database  922  which contains information regarding users of the social network such as name, address, occupation, group memberships, social network connections, current GPS location of mobile device, share preferences, interests, age, hometown, personal statistics, work information, etc. as discussed in more detail with reference to  FIG. 12A ;   a results ranking and formatting module  924  for ranking (e.g., assigning a relevance and/or match quality score to) the potential facial matches from the facial image database  114 -A and formatting the results for presentation; in some embodiments, the ranking or scoring of results utilizes related information retrieved from the aforementioned social network database; in some embodiment, the search formatted results include the potential image matches as well as a subset of information from the social network database; and   an annotation module  926  for receiving annotation information from an annotation database ( 116 ,  FIG. 1 ) determining if any of the annotation information is relevant to the facial recognition search system and storing any determined relevant portions of the annotation information into the respective annotation database  928 .       

       FIG. 10  is a block diagram illustrating an image-to-terms search system  112 -C utilized to process a visual query in accordance with one embodiment of the present invention. In some embodiments, the image-to-terms search system recognizes objects (instance recognition) in the visual query. In other embodiments, the image-to-terms search system recognizes object categories (type recognition) in the visual query. In some embodiments, the image to terms system recognizes both objects and object-categories. The image-to-terms search system returns potential term matches for images in the visual query. The image-to-terms search system  112 -C typically includes one or more processing units (CPU&#39;s)  1002 , one or more network or other communications interfaces  1004 , memory  1012 , and one or more communication buses  1014  for interconnecting these components. Memory  1012  includes high-speed random access memory, such as DRAM, SRAM, DDR RAM or other random access solid state memory devices; and may include non-volatile memory, such as one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or other non-volatile solid state storage devices. Memory  1012  may optionally include one or more storage devices remotely located from the CPU(s)  1002 . Memory  1012 , or alternately the non-volatile memory device(s) within memory  1012 , comprises a non-transitory computer readable storage medium. In some embodiments, memory  1012  or the computer readable storage medium of memory  1012  stores the following programs, modules and data structures, or a subset thereof:
         an operating system  1016  that includes procedures for handling various basic system services and for performing hardware dependent tasks;   a network communication module  1018  that is used for connecting the image-to-terms search system  112 -C to other computers via the one or more communication network interfaces  1004  (wired or wireless) and one or more communication networks, such as the Internet, other wide area networks, local area networks, metropolitan area networks, and so on;   a image-to-terms search application  1020  that searches for images matching the subject or subjects in the visual query in the image search database  114 -C;   an image search database  114 -C which can be searched by the search application  1020  to find images similar to the subject(s) of the visual query;   a terms-to-image inverse index  1022 , which stores the textual terms used by users when searching for images using a text based query search engine  1006 ;   a results ranking and formatting module  1024  for ranking the potential image matches and/or ranking terms associated with the potential image matches identified in the terms-to-image inverse index  1022 ; and   an annotation module  1026  for receiving annotation information from an annotation database ( 116 ,  FIG. 1 ) determining if any of the annotation information is relevant to the image-to terms search system  112 -C and storing any determined relevant portions of the annotation information into the respective annotation database  1028 .       

       FIGS. 5-10  are intended more as functional descriptions of the various features which may be present in a set of computer systems than as a structural schematic of the embodiments described herein. In practice, and as recognized by those of ordinary skill in the art, items shown separately could be combined and some items could be separated. For example, some items shown separately in these figures could be implemented on single servers and single items could be implemented by one or more servers. The actual number of systems used to implement visual query processing and how features are allocated among them will vary from one implementation to another. 
     Each of the methods described herein may be governed by instructions that are stored in a non-transitory computer readable storage medium and that are executed by one or more processors of one or more servers or clients. The above identified modules or programs (i.e., sets of instructions) need not be implemented as separate software programs, procedures or modules, and thus various subsets of these modules may be combined or otherwise re-arranged in various embodiments. Each of the operations shown in  FIGS. 5-10  may correspond to instructions stored in a computer memory or non-transitory computer readable storage medium. 
       FIG. 11  illustrates a client system  102  with a screen shot of an exemplary visual query  1102 . The client system  102  shown in  FIG. 11  is a mobile device such as a cellular telephone, portable music player, or portable emailing device. The client system  102  includes a display  706  and one or more input means  708  such the buttons shown in this figure. In some embodiments, the display  706  is a touch sensitive display  709 . In embodiments having a touch sensitive display  709 , soft buttons displayed on the display  709  may optionally replace some or all of the electromechanical buttons  708 . Touch sensitive displays are also helpful in interacting with the visual query results as explained in more detail below. The client system  102  also includes an image capture mechanism such as a camera  710 . 
       FIG. 11  illustrates a visual query  1102  which is a photograph or video frame of a package on a shelf of a store. In the embodiments described here, the visual query is a two dimensional image having a resolution corresponding to the size of the visual query in pixels in each of two dimensions. The visual query  1102  in this example is a two dimensional image of three dimensional objects. The visual query  1102  includes background elements, a product package  1104 , and a variety of types of entities on the package including an image of a person  1106 , an image of a trademark  1108 , an image of a product  1110 , and a variety of textual elements  1112 . 
     As explained with reference to  FIG. 3 , the visual query  1102  is sent to the front end server  110 , which sends the visual query  1102  to a plurality of parallel search systems ( 112 A-N), receives the results and creates an interactive results document. 
       FIGS. 12A and 12B  each illustrate a client system  102  with a screen shot of an embodiment of an interactive results document  1200 . The interactive results document  1200  includes one or more visual identifiers  1202  of respective sub-portions of the visual query  1102 , which each include a user selectable link to a subset of search results.  FIGS. 12A and 12B  illustrate an interactive results document  1200  with visual identifiers that are bounding boxes  1202  (e.g., bounding boxes  1202 - 1 ,  1202 - 2 ,  1202 - 3 ). In the embodiments shown in  FIGS. 12A and 12B , the user activates the display of the search results corresponding to a particular sub-portion by tapping on the activation region inside the space outlined by its bounding box  1202 . For example, the user would activate the search results corresponding to the image of the person, by tapping on a bounding box  1306  ( FIG. 13 ) surrounding the image of the person. In other embodiments, the selectable link is selected using a mouse or keyboard rather than a touch sensitive display. In some embodiments, the first corresponding search result is displayed when a user previews a bounding box  1202  (i.e., when the user single clicks, taps once, or hovers a pointer over the bounding box). The user activates the display of a plurality of corresponding search results when the user selects the bounding box (i.e., when the user double clicks, taps twice, or uses another mechanism to indicate selection.) 
     In  FIGS. 12A and 12B  the visual identifiers are bounding boxes  1202  surrounding sub-portions of the visual query.  FIG. 12A  illustrates bounding boxes  1202  that are square or rectangular.  FIG. 12B  illustrates a bounding box  1202  that outlines the boundary of an identifiable entity in the sub-portion of the visual query, such as the bounding box  1202 - 3  for a drink bottle. In some embodiments, a respective bounding box  1202  includes smaller bounding boxes  1202  within it. For example, in  FIGS. 12A and 12B , the bounding box identifying the package  1202 - 1  surrounds the bounding box identifying the trademark  1202 - 2  and all of the other bounding boxes  1202 . In some embodiments that include text, also include active hot links  1204  for some of the textual terms.  FIG. 12B  shows an example where “Active Drink” and “United States” are displayed as hot links  1204 . The search results corresponding to these terms are the results received from the term query server system  118 , whereas the results corresponding to the bounding boxes are results from the query by image search systems. 
       FIG. 13  illustrates a client system  102  with a screen shot of an interactive results document  1200  that is coded by type of recognized entity in the visual query. The visual query of  FIG. 11  contains an image of a person  1106 , an image of a trademark  1108 , an image of a product  1110 , and a variety of textual elements  1112 . As such the interactive results document  1200  displayed in  FIG. 13  includes bounding boxes  1202  around a person  1306 , a trademark  1308 , a product  1310 , and the two textual areas  1312 . The bounding boxes of  FIG. 13  are each presented with separate cross-hatching which represents differently colored transparent bounding boxes  1202 . In some embodiments, the visual identifiers of the bounding boxes (and/or labels or other visual identifiers in the interactive results document  1200 ) are formatted for presentation in visually distinctive manners such as overlay color, overlay pattern, label background color, label background pattern, label font color, and bounding box border color. The type coding for particular recognized entities is shown with respect to bounding boxes in  FIG. 13 , but coding by type can also be applied to visual identifiers that are labels. 
       FIG. 14  illustrates a client device  102  with a screen shot of an interactive results document  1200  with labels  1402  being the visual identifiers of respective sub-portions of the visual query  1102  of  FIG. 11 . The label visual identifiers  1402  each include a user selectable link to a subset of corresponding search results. In some embodiments, the selectable link is identified by descriptive text displayed within the area of the label  1402 . Some embodiments include a plurality of links within one label  1402 . For example, in  FIG. 14 , the label hovering over the image of a woman drinking includes a link to facial recognition results for the woman and a link to image recognition results for that particular picture (e.g., images of other products or advertisements using the same picture.) 
     In  FIG. 14 , the labels  1402  are displayed as partially transparent areas with text that are located over their respective sub-portions of the interactive results document. In other embodiments, a respective label is positioned near but not located over its respective sub-portion of the interactive results document. In some embodiments, the labels are coded by type in the same manner as discussed with reference to  FIG. 13 . In some embodiments, the user activates the display of the search results corresponding to a particular sub-portion corresponding to a label  1302  by tapping on the activation region inside the space outlined by the edges or periphery of the label  1302 . The same previewing and selection functions discussed above with reference to the bounding boxes of  FIGS. 12A and 12B  also apply to the visual identifiers that are labels  1402 . 
       FIG. 15  illustrates a screen shot of an interactive results document  1200  and the original visual query  1102  displayed concurrently with a results list  1500 . In some embodiments, the interactive results document  1200  is displayed by itself as shown in  FIGS. 12-14 . In other embodiments, the interactive results document  1200  is displayed concurrently with the original visual query as shown in  FIG. 15 . In some embodiments, the list of visual query results  1500  is concurrently displayed along with the original visual query  1102  and/or the interactive results document  1200 . The type of client system and the amount of room on the display  706  may determine whether the list of results  1500  is displayed concurrently with the interactive results document  1200 . In some embodiments, the client system  102  receives (in response to a visual query submitted to the visual query server system) both the list of results  1500  and the interactive results document  1200 , but only displays the list of results  1500  when the user scrolls below the interactive results document  1200 . In some of these embodiments, the client system  102  displays the results corresponding to a user selected visual identifier  1202 / 1402  without needing to query the server again because the list of results  1500  is received by the client system  102  in response to the visual query and then stored locally at the client system  102 . 
     In some embodiments, the list of results  1500  is organized into categories  1502 . Each category contains at least one result  1503 . In some embodiments, the categories titles are highlighted to distinguish them from the results  1503 . The categories  1502  are ordered according to their calculated category weight. In some embodiments, the category weight is a combination of the weights of the highest N results in that category. As such, the category that has likely produced more relevant results is displayed first. In embodiments where more than one category  1502  is returned for the same recognized entity (such as the facial image recognition match and the image match shown in  FIG. 15 ) the category displayed first has a higher category weight. 
     As explained with respect to  FIG. 3 , in some embodiments, when a selectable link in the interactive results document  1200  is selected by a user of the client system  102 , the cursor will automatically move to the appropriate category  1502  or to the first result  1503  in that category. Alternatively, when a selectable link in the interactive results document is selected by a user of the client system  102 , the list of results  1500  is re-ordered such that the category or categories relevant to the selected link are displayed first. This is accomplished, for example, by either coding the selectable links with information identifying the corresponding search results, or by coding the search results to indicate the corresponding selectable links or to indicate the corresponding result categories. 
     In some embodiments, the categories of the search results correspond to the query-by-image search system that produce those search results. For example, in  FIG. 15  some of the categories are product match  1506 , logo match  1508 , facial recognition match  1510 , image match  1512 . The original visual query  1102  and/or an interactive results document  1200  may be similarly displayed with a category title such as the query  1504 . Similarly, results from any term search performed by the term query server may also be displayed as a separate category, such as web results  1514 . In other embodiments, more than one entity in a visual query will produce results from the same query-by-image search system. For example, the visual query could include two different faces that would return separate results from the facial recognition search system. As such, in some embodiments, the categories  1502  are divided by recognized entity rather than by search system. In some embodiments, an image of the recognized entity is displayed in the recognized entity category header  1502  such that the results for that recognized entity are distinguishable from the results for another recognized entity, even though both results are produced by the same query by image search system. For example, in  FIG. 15 , the product match category  1506  includes two entity product entities and as such as two entity categories  1502 —a boxed product  1516  and a bottled product  1518 , each of which have a plurality of corresponding search results  1503 . In some embodiments, the categories may be divided by recognized entities and type of query-by-image system. For example, in  FIG. 15 , there are two separate entities that returned relevant results under the product match category product. 
     In some embodiments, the results  1503  include thumbnail images. For example, as shown for the facial recognition match results in  FIG. 15 , small versions (also called thumbnail images) of the pictures of the facial matches for “Actress X” and “Social Network Friend Y” are displayed along with some textual description such as the name of the person in the image. 
       FIGS. 16A and 16B  are flow diagrams illustrating the process for creating an actionable search result element. Each of the operations shown in  FIGS. 16A and 16B  may correspond to instructions stored in a computer memory or computer readable storage medium. Specifically, many of the operations correspond to instructions for the actionable search results module  838  of the front end search system  110  ( FIG. 6 ). 
     As explained with respect to  FIG. 2 , the front end search system  110  receives a visual query  1200  ( FIG. 12 ) from the client system ( 202 ). The search system sends the visual query to at least one search system that implements a visual query search process ( 1602 ). In some embodiments, the visual query will be sent to a plurality of search systems ( 210 ) each performing a distinct visual query search process, as described above with reference to  FIG. 2 . At least one result is received from the search system(s) ( 1604 ). In some embodiments, the results will include a communication address ( 1606 ). For example, when the visual query contains an image of several faces, the returned search results (from a facial recognition search system) may include one or more communication addresses, such as one or more of a phone number, email address, and physical address for one or more of the persons identified in the search results. 
     The front end search system identifies an entity in the visual query ( 1608 ). The entity may be identified based on a portion of text in the visual query, as explained with reference to  FIG. 17 . The entity may be a bar code (or may be identified based on a bar code) as explained with reference to  FIG. 18 . The entity may be a product as explained with reference to  FIG. 19 . The entity may be a building as explained with reference to  FIG. 21 . The entity may be a business or organization (e.g., identified from an image of a building, or an image of a product made by the business or organization, etc.) as explained with reference to  FIG. 22 . The entity may be any of the following: a person, a name or other identifier associated with the person, a company, an organization, phone number, fax number, email address, postal address, IM address, URL, text, logo, building, group of buildings or physical structures, a postal address, a landmark, social networking contact, product, face, barcode, or image ( 1610 ). When the entity is a textual entity, such as a name, phone number, or email address, an OCR process is used to identify the entity. When the entity is not a textual entity, identifying the entity is done using a non-OCR matching process ( 1612 ). 
     The front end search system identifies one or more client-side actions corresponding to the identified entity ( 1614 ). In some embodiments, when the identified entity can be associated with more than one client-side action, more than one client-side action is associated with the identified entity. For example, if the entity identified were a company, a variety of client-side actions such as initiating a phone call, emailing, or going to the company&#39;s website are identified (assuming all of those client-side actions can be determined or identified by the search system). For types of identified entities, only one client-side action is associated with the identified entity. For example, if a fax number is the identified entity, faxing might be the only client-side action identified. 
     In some embodiments, the identified action is based on information identified in the one or more search results ( 1616 ). This is especially relevant when the original query does not include actionable information directly. For example, if the visual query  1200  were a bar code as shown in  FIG. 18 , the identified action would be based on information identified from the bar code match, such as product information or in the case of  FIG. 18 , personal information associated with the barcode on a personal ID. 
     The client-side action could be any of the following: initiating a call to a phone number, instant messaging, faxing, paging, emailing, contacting through a social network system, and communicating by another mechanism ( 1618 ). For example, if the identified entity is a phone number, the client-side action would be initiating a telephone call to the phone number. If the identified entity is an email address, the client-side action would be initiating composition of an email message to the email address. 
     When the entity identified in a visual query is a postal address, the client-side action can be any of a plurality of mapping related actions. In some embodiments, the mapping related actions include providing a map identifying the location of the postal address, providing driving directions to the postal address, providing driving directions from the postal address, providing an aerial photograph including the postal address, and/or providing a street view image corresponding to the postal address ( 1620 ). 
     In some embodiments, the client-side action is adding information to a contacts list ( 1622 ). For example, the client-action could be adding to a contact list a name, an email address, a phone number, a fax number, a postal address, an instant messaging address, a company name, an organization name, a URL, and/or a social networking contact. 
     When the entity identified in a visual query is a product, property or other entity that can be purchased or reviewed, the client-side action can be one or more of: initiating purchasing or bidding on the product, property, or other entity; obtaining and/or displaying a review of the product, property of other entity; obtaining and/or displaying a list of similar products, properties or other entities; and obtaining and/or displaying a list of related products, properties or other entities ( 1624 ). 
     The front end search system creates an actionable search result element ( 1626 ). The actionable search result element is configured to launch an identified client-side action. For at least some visual queries, two or more actionable search result elements are created for the visual query being processed; each of the actionable search result elements is configured to launch a respective client-side action ( 1628 ). Optionally, the two or more actionable search result elements are configured to launch different client applications ( 1629 ), and to perform different client-side actions. Examples of different client applications are client applications for communicating via email, viewing webpages, and communicating by telephone. Since applications can also be executed within the context of web browsers, the different client applications may include applications like Gmail (trademark of Google Inc.), Google Calendar (trademark of Google Inc.), and Google Reader (trademark of Google Inc.), which are web-based applications that include client application code executed by a virtual machine in the context of a browser application. 
     In some embodiments, actionable search result elements are made for just a subset of the identified client-side actions when predefined conditions exit (e.g., when the number of identified client-side actions exceeds a threshold or predefined maximum). In these instances, the client-side actions selected for corresponding actionable search result elements are those calculated to be of the most likely interest to the user. In some instances, the capabilities of the client device are used in deciding what actionable search result elements to send to the client device. For example, if the client device does not include a phone application, an actionable search result element for initiating a phone call would not be sent to the client device, or would not be chosen as a preferred actionable search result element. In some embodiments, potential actionable search result elements are scored based on one or more factors, such as: relevancy, popularity, relation to the focus of the visual query, previous user patterns of use, and other user patterns of use. The top N potential actionable search results are then displayed based on screen space allotted to actionable search results. 
     In some embodiments, the actionable search results are displayed as buttons on the user interface ( 1630 ). In this document, a “button” is a discrete user interface element which may or may not include an display element that looks like a button. 
     The front end search system sends the one or more actionable search result elements to the client system for display ( 1632 ). Optionally, several of the actionable search result elements are sent to the client system. In some embodiments, in addition to the actionable search result element, at least one search result is also sent to the client system ( 1634 ). In some embodiments, the actionable search result elements are distinct from the search results. In some embodiments, they are configured to be displayed in separate portions of the display device. In some embodiments, some of the actionable search result elements are embedded in the search result display as links. 
     In some embodiments, the actionable search result elements are configured to be displayed over a portion of the visual query ( 1636 ). For example, in some embodiments the sending includes sending to the client system a representation of the visual query with the actionable search result element overlaying at least a portion of the representation of the visual query. In other embodiments, the sending includes sending to the client system information for visually presenting the actionable search result element overlaying at least a portion of the visual query. 
     In some embodiments, in addition to creating actionable search result elements, other actionable elements are created and sent to the client system ( 1638 ). These actionable elements are separate from the search result elements because the actions are not related to particular search results. For example, an actionable element might include one or more options to share or upload the visual query and/or search results, review the user&#39;s visual query history, and/or launch a new search ( 1640 ). 
     Now that the process for creating an actionable search result element has been described with reference to  FIGS. 16A and 16B , particular examples will now be discussed. 
     In some embodiments, the identified entity is a person having one or more associated identifiers. For example, identifiers can be one or more of: the name of the person, a facial image of the person, an identification number associated with the person, a phone number associated with the person, a fax number associated with the person, a social networking identifier associated with the person, and an email address associated with the person. When the identified entity is an entity other than a person, such as a business, organization, association, or other entity, the entity has one or more associated identifiers, such as one or more of: an image, identification number, logo, phone number, fax number, email address, and physical address. In these embodiments, the plurality of search results may include a communication address associated with the person/entity that is different from the identifier of the person/entity. For example, if the identifier is the name of a person, the search results might include one or more of: a phone number, an email address and instant messaging address associated with the person. As such, the actionable search result elements are configured to launch a communication using the communication address from the search results (as well as any communication address identified in the original query). This same concept applies to entities other than individuals and the identifiers of individuals. 
     In some embodiments, the client is configured to identify an entity that exists directly in the visual query in a manner similar to that discussed above for the server. Then the client identifies one or more actions corresponding to identified entity and creates the corresponding the actionable search result elements. In this embodiment, the client side created actionable search result elements can be augmented by the actionable search result elements identified by the server, such as those that indirectly correspond to an identified entity in the visual query. 
     Example illustrations of the queries and their associated actionable search results will be discussed below for illustration purposes. The search queries and their results in these examples are not representative of all possible queries and actionable search results, but are shown to enhance the general description provided above with reference to  FIGS. 16A and 16B . 
       FIG. 17  illustrates a client system display of an embodiment of a results list  1500  and a plurality of actionable search result elements  1700  returned for a visual query  1200  that includes an image of a business card. The visual query  1200  in this embodiment is a photograph of a business card that includes a variety of elements. In this example, the visual query  1200  of the business card was sent to the search system, which identified the following entities in the visual query: the name of an individual  1702 , a logo  1704 , a postal address  1706 , a phone number  1708 , and a website address  1710 . The search system returned a search results list  1500  and actionable search result elements  1700  along with the visual query  1200  and other elements. Some of the actionable search result elements  1700  correspond to entities that the search system found directly in the business card by using an OCR process. These include the call button actionable search result  1712 , which is a button for initiating a telephone call to the identified phone number  1708 , a map button actionable search result  1716  which is a button for mapping the identified address  1706 , and a URL button actionable search result  1718  which is a button for viewing the identified website  1710 . 
     Some of the actionable search results  1700  in  FIG. 17  are configured to launch client-side actions that indirectly correspond to an identified entity (or an identifier associated with an identified entity) in the visual query. For example, the email button actionable search result  1714 , initiates the composition of an email message even though the email address was not included in the text on the business card in the visual query. Address information needed to launch a client-side action that indirectly corresponds to an identified entity is acquired from a search result associated with the visual query. For example, the email address was acquired from search result information associated with the name Bob Every, because no email address was listed on the business card. (The name “Bob Every” is an identifier associated with a person, “Bob Every.”) In other words, the identified client-side action (emailing) corresponds to the identified entity “Bob Every,” and the email address was a part of the information identified in the search results for the visual query (the business card). Similarly, the “send social networking message—Bob” actionable search result button  1722  is for initiating the composition of a social networking message to Bob&#39;s social network account, which is also not listed on his business card. Thus, the “send social networking message—Bob” actionable search result button is another actionable search result configured to launch a client-side action corresponding indirectly to an identified entity in the visual query. 
     The “add Bob Every to contacts” actionable search result button  1720  is for adding some of the identified information to a contacts list. The information that can be added is the information retrieved directly from the visual query (such as name, postal address, phone number, website on the business card) and additional search result information corresponding to an identified entity in the visual query (such as email address, social network contact, and company name). 
     The search results list in this example shows other relevant results such as web results  1514  and a logo match  1508  for “Any Business.” These types of results are the same as those described above with reference to  FIG. 15 . 
       FIG. 17  also includes several actionable elements  1724 . The actionable elements  1724  are not tied to a particular search result, but rather are selectable elements for initiating standard actions in the visual query system. The actionable elements displayed in  FIG. 17  are buttons to initiate a “new search,” to “share” the search results or a portion thereof with another user or application, and to review previous visual query searches (labeled “history”). 
       FIG. 18  illustrates a client system display of an embodiment of a results list  1500  and a plurality of actionable search result elements  1700  returned for a visual query  1200  of a 2D barcode. The actionable search result elements  1700  in  FIG. 18  are configured to launch client-side actions that indirectly correspond to the bar code identified entity  1801  because the bar code itself is not an entity that has a direct corresponding client-side action. In the embodiment shown in  FIG. 18 , the bar code match visual query search result information  1802  is displayed above the actionable search result elements  1700 . The information displayed in this embodiment is related to Bob Every, as perhaps this bar code was on his ID or access card. Therefore, the results returned are the same as those shown in  FIG. 17 . However, bar codes are used in a variety of applications, and information associated with each bar code will determine the type of actionable search results displayed. For example, if a bar code is associated with a product, the actionable search results are likely to relate to buying the product, obtaining detailed information about the product, or obtaining a product review. This embodiment also includes a results list  1500  and actionable elements  1724 . 
       FIG. 19  illustrates a client system display of a visual query result that includes a results list  1500  and a plurality of actionable search result elements  1700  returned for a visual query  1200  including a product. The visual query  1200  in this embodiment is a photograph of a book  1901  on a bookshelf The book cover includes text and images. The search system returned a search results list  1500  and actionable search result elements  1700  along with the visual query  1200  and other elements. The identified entity for this query was the book  1901 . In the embodiment shown in  FIG. 19 , the book match visual query search result information  1902  is displayed above the actionable search result elements  1700 . These book result elements include the title, author, and a star rating. The actionable search result elements  1700  correspond to the likely client-side actions a user may wish to take corresponding to the identified product. In this embodiment the actionable search result elements include a button  1904  to buy the product, an button  1906  to bid on the product, and a button  1908  to read product reviews regarding the product. The search results list includes web results  1514  and image results  1512 . 
       FIG. 20  is a flow diagram illustrating the communications between a client system  102  and a front end visual query server system  110  for creating actionable search results  1700  with optional location information. In some embodiments, the location information is enhanced prior to being used. In these embodiments, visual query results are based at least in part on the location of the user at the time of the querying. 
     Using location information or enhanced location information to improve visual query searching is useful for “street view visual queries.” For example, if a user stands on a street corner and takes a picture of a building as the visual query, and it is processed using current location information (i.e., information identifying the location of the client device) as well as the visual query, and search results will include information about the business or organizations located in that building. 
     Each of the operations shown in  FIG. 20  may correspond to instructions stored in a computer memory or computer readable storage medium. Specifically, many of the operations correspond to executable instructions in the actionable search results module  838  of the front end search system  110  ( FIG. 6 ) and the results browser  726  of the client system  102  ( FIG. 5 ). 
     The client device or system  102  receives an image from the user ( 2002 ). In some embodiments, the image is received from a camera  710  ( FIG. 5 ) in the client device or system  102 . In some embodiments, the client system also receives location information ( 2004 ) indicating the location of the client system. The location information may come from a GPS device  707  ( FIG. 5 ) in the client device or system  102 . Alternately, or in addition, the location information may come from cell tower usage information or local wireless network information. In order to be useful for producing street-view-assisted results, the location information typically must satisfy an accuracy criterion. In some embodiments, when the location information has an accuracy of no worse than A, where A is a predefined value of 100 meters or less, the accuracy criterion is satisfied. The client system  102  creates a visual query from the image ( 2006 ) and sends the visual query to the server system ( 2008 ). In some embodiments, the client system  102  also sends the location information to the server ( 2010 ). 
     The front end server system  110  receives the visual query ( 2012 ) from the client system. It may also receive location information ( 2014 ). As explained with reference to  FIG. 16A , the front end server system  110  sends the visual query to at least one search system implementing a visual query process ( 2016 ). In some embodiments, the visual query is sent to a plurality of parallel search systems. The search systems return one or more search results ( 2024 ). 
     In the embodiments where the client system  102  sends location information to the front end server system  110 , the front end server system sends the location information to at least one location augmented search system ( 2018 ). The location information received (at  2014 ) is likely to pinpoint the user within a specified range. In some embodiments, the location information locates the client system with an accuracy of 75 feet or better; in some other embodiments (as described above) the location information has an accuracy of no worse than A, where A is a predefined value of 100 meters or less. 
     The location-augmented search system ( 112 -F shown in  FIG. 23 ) performs a visual query match search on a corpus of street view images (previously stored in an image database  2322 ) within the specified range. If the image match is found within this corpus, enhanced location information associated with the matching image is retrieved. In some embodiments, the enhanced location information pinpoints the particular location of the user within a narrower range than the original range and optionally (but typically) also includes the pose (i.e., the direction that the user is facing.) In some embodiments, the particular location identified by the enhanced location information is within predefined distance, such as the 10 or 15 feet, from the client device&#39;s actual location. In this embodiment, the front end server system  110  receives the enhanced location information based on the visual query and the location information from the location augmented search system ( 2020 ). Then the front end server system  110  sends the enhanced location information to a location-based query system ( 112 -G shown in  FIG. 24 ) ( 2022 ). The location-based query system  112 -G retrieves and returns one or more search results, which are received by the front end server system ( 2024 ). Optionally, the search results are obtained in accordance with both the visual query and the enhanced location information ( 2026 ). Alternately, the search results are obtained in accordance with the enhanced location information, which was retrieved using the original location information and the visual query ( 2028 ). 
     It should be noted that the visual query results (received at  2024 ) may include results for entities near the pinpointed location, whether or not these entities are viewable in the visual query image. For example, the visual query results may include entities obstructed in the original visual query (e.g., by a passing car or a tree.) In some embodiments, the visual query results will also include nearby entities such as businesses or landmarks near the pinpointed address even if these entities are not in the visual query image at all. 
     As explained with reference to  FIG. 16A  elements  1602  and  1604 , in embodiments where no location information is received, and the front end search system  110  sends just the visual query to the one or more visual search systems ( 2016 ), and the front end search system  110  then receives one or more search results from one or more visual query search systems ( 2024 ). 
     In the embodiments with and without location information, the front end search system  110  creates one or more actionable search result elements ( 2030 ). The creation or generation of actionable search result elements is discussed above with reference to  FIGS. 16A and 16B  elements ( 1608 - 1630 ). 
     At least one actionable search result element is received by the client system ( 2032 ). The client system  102  displays the actionable search result element ( 2034 ). As discussed with relation to  FIG. 16B  element  1632 , in some embodiments one or more search results are also sent along with the actionable search result element from the front end server system to the client system. Optionally (and typically), the search results are displayed with the actionable search result elements. Similarly, in embodiments where actionable elements are sent to the client ( FIG. 16B , element  1638 ), they too are displayed. In some embodiments, the actionable search result element is displayed overlaying a portion of the visual query ( 2036 ). An example of this type of display is shown in  FIG. 22 , as discussed in more detail below. 
     The client system  102  receives a user selection of a respective actionable search result element ( 2038 ). Then the client system launches a client-side action corresponding to the selected actionable search result element in an application distinct from the visual query application in which the visual query results and actionable search result element were displayed ( 2040 ). For example, if the user-selected actionable search result element is for initiating a telephone call to a particular phone number, the action is initiated in a phone application, which is distinct from the client-side visual query application. 
       FIG. 21  illustrates a client system display of an embodiment of a results list  1500  and a plurality of actionable search result elements  1700  returned for a visual query  1200  of a building. The visual query  1200  in this embodiment was processed as a street view visual query, and thus the received search results were obtained in accordance with both the visual query and location information provided by the client system  102 . The identified entity for this query is the San Francisco (SF) Ferry building  2101 . In the embodiment shown in  FIG. 21 , the “place match” visual query search result information  2102  is displayed above the actionable search result elements  1700 . The place match result includes the name of the building (SF Ferry Building), the postal address (Pier 48), a description about the place, and a star rating. The actionable search result elements  1700  correspond to the likely client-side actions a user may wish to take corresponding to the identified place. In this embodiment the actionable search result elements include a button to call a phone number associated with the place  2104 , a URL button for viewing a website associated with the place  2106 , and a button for mapping the address  2108 . The search results list includes web results  1514  and related place matches  2110 . The search results list includes other places identified by the street view place match system. In some embodiments, the place match system displays other similar and/or other nearby places to the one identified as currently being in front of the user. For example, if the place in front of the user were identified as a That restaurant, the street view place match system may display other That restaurants within one mile of the identified place. In the embodiment shown in  FIG. 21  the displayed related places  2110  are places that are also popular tourist stops—the California Academy of Sciences  2112  and the Palace of Fine Arts  2114 . In other embodiments, rather than displaying similar places, the related place match may display places geographically next to the identified place, such as the stores on either side or above the store in the visual query. In some embodiments, the similar and/or nearby results also include actionable search result elements. For example, a button to initiation a phone call to each of the similar results will be provided in some embodiments. 
       FIG. 22  illustrates a client system display of an embodiment where a plurality of actionable search result elements  1700  overlay the visual query  1200 . In this embodiment the actionable search result elements which are returned are for a street view visual query, but actionable search results elements could overlay any type of visual query. In the embodiment shown in  FIG. 22 , the front end server system identified a restaurant entity in the visual query called “The City Restaurant”  2201 . The front end server identified several client side actions corresponding to “The City Restaurant” entity  2201  and created actionable search result elements for them. The actionable search result elements include a button  2204  to call a phone number associated with the restaurant, a button  2206  to read reviews regarding the restaurant, a button  2208  to get information regarding the restaurant, a button  2210  for mapping the address associated with the restaurant, a button  2212  for making reservations at the restaurant, and a button  2214  for more information such as nearby or similar restaurants. The actionable result elements in the embodiment shown in  FIG. 22  are displayed overlaying a portion of the visual query  1200  in an actionable search result element display box  2216 . In this embodiment, the display box  2216  is partially transparent to allow the user to see the original query under the display box  2216 . In some embodiments, the display box  2216  includes a tinted overlay such as red, blue, green etc. In other embodiments, the display box  2216  grays out the original query image. The display box  2216  also provides the name of the identified entity  2218 , in this case the restaurant name “The City Restaurant.” The partially transparent display box  2216  embodiment is an alternative to the results list style view shown in  FIG. 21 . This embodiment allows the user to intuitively associate the actionable search result buttons with the identified entity in the query. 
       FIG. 23  is a block diagram illustrating one of the location augmented search system utilized to process a visual query.  FIG. 23  illustrates a location augmented search system  112 -F in accordance with some embodiments. The location augmented search system  112 -F includes one or more processing units (CPU&#39;s)  2302 , one or more network or other communications interfaces  2304 , memory  2312 , and one or more communication buses  2314  for interconnecting these components. The communication buses  2314  may include circuitry (sometimes called a chipset) that interconnects and controls communications between system components. Memory  2312  includes high-speed random access memory, such as DRAM, SRAM, DDR RAM or other random access solid state memory devices; and may include non-volatile memory, such as one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or other non-volatile solid state storage devices. Memory  2312  may optionally include one or more storage devices remotely located from the CPU(s)  2302 . Memory  2312 , or alternately the non-volatile memory device(s) within memory  2312 , comprises a computer readable storage medium. In some embodiments, memory  2312  or the computer readable storage medium of memory  2312  stores the following programs, modules and data structures, or a subset thereof:
         an operating system  2316  that includes procedures for handling various basic system services and for performing hardware dependent tasks;   a network communication module  2318  that is used for connecting the location augmented search system  112 -F to other computers via the one or more communication network interfaces  2304  (wired or wireless) and one or more communication networks, such as the Internet, other wide area networks, local area networks, metropolitan area networks, and so on;   a search application  2320  which searches a street view index for relevant images matching the visual query which are located within a specified range of the client system&#39;s location, as specified by location information associated with the client system, and if a matching image is found, returns augmented location information, which is more accurate than the previously available location information for the client system;   an image database  2322  that includes street view image records  2306 ; each street view image record includes an image  2308  and pinpoint location information  2310 ;   an optional index  2324  for organizing the street view image records  2306  in the image database  2320 ;   an optional results ranking module  2326  (sometimes called a relevance scoring module) for ranking the results from the search application, the ranking module may assign a relevancy score for each result from the search application, and if no results reach a pre-defined minimum score, may return a null or zero value score to the front end visual query processing server indicating that the results from this server system are not relevant; and   an annotation module  2328  for receiving annotation information from an annotation database ( 116 ,  FIG. 1 ) determining if any of the annotation information is relevant to the particular search application and incorporating any determined relevant portions of the annotation information into the respective annotation database  2330 .       

       FIG. 24  is a block diagram illustrating a location based search system  112 -G in accordance with some embodiments. The location based search system  112 -G, which is used to process visual queries, includes one or more processing units (CPU&#39;s)  2402 , one or more network or other communications interfaces  2404 , memory  2412 , and one or more communication buses  2414  for interconnecting these components. The communication buses  2414  may include circuitry (sometimes called a chipset) that interconnects and controls communications between system components. Memory  2412  includes high-speed random access memory, such as DRAM, SRAM, DDR RAM or other random access solid state memory devices; and may include non-volatile memory, such as one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or other non-volatile solid state storage devices. Memory  2412  may optionally include one or more storage devices remotely located from the CPU(s)  2402 . Memory  2412 , or alternately the non-volatile memory device(s) within memory  2412 , comprises a computer readable storage medium. In some embodiments, memory  2412  or the computer readable storage medium of memory  2412  stores the following programs, modules and data structures, or a subset thereof:
         an operating system  2416  that includes procedures for handling various basic system services and for performing hardware dependent tasks;   a network communication module  2418  that is used for connecting the location based search system  112 -G to other computers via the one or more communication network interfaces  2404  (wired or wireless) and one or more communication networks, such as the Internet, other wide area networks, local area networks, metropolitan area networks, and so on;   a search application  2420  which searches the location based index for search results that are located within a specified range of the enhanced location information provided by the location augmented search system ( 112 -F); in some embodiments all search results within the specified range are returned, while in other embodiments the returned results are the closest N results to the enhanced location, in yet other embodiments the search application returns search results that are topically similar to the result associated with the enhanced location information (for example, all restaurants within a certain range of the restaurant associated with the enhanced location information);   an location database  2422  which includes records  2406 , each record includes a location information  2310  and associated other information  2308  (such as contact information, reviews, and images);   an optional index  2424  for organizing the records  2406  in the location database  2420 ;   an optional results ranking module  2426  (sometimes called a relevance scoring module) for ranking the results from the search application, the ranking module may assign a relevancy score for each result from the search application, and if no results reach a pre-defined minimum score, may return a null or zero value score to the front end visual query processing server indicating that the results from this server system are not relevant; and   an annotation module  2428  for receiving annotation information from an annotation database ( 116 ,  FIG. 1 ) determining if any of the annotation information is relevant to the particular search application and incorporating any determined relevant portions of the annotation information into the respective annotation database  2430 .       

     Each of the software elements shown in  FIGS. 23 and 24  may be stored in one or more of the previously mentioned memory devices, and corresponds to a set of instructions for performing a function described above. The above identified modules or programs (i.e., sets of instructions) need not be implemented as separate software programs, procedures or modules, and thus various subsets of these modules may be combined or otherwise re-arranged in various embodiments. In some embodiments, memory of the respective system may store a subset of the modules and data structures identified above. Furthermore, memory of the respective system may store additional modules and data structures not described above. 
     Although  FIGS. 23 and 24  show search systems, these Figures are intended more as functional descriptions of the various features which may be present in a set of servers than as a structural schematic of the embodiments described herein. In practice, and as recognized by those of ordinary skill in the art, items shown separately could be combined and some items could be separated. For example, some items shown separately in  FIGS. 23 and 24  could be implemented on single servers and single items could be implemented by one or more servers. The actual number of servers used to implement a location-based search system or location-augmented search system and how features are allocated among them will vary from one implementation to another, and may depend in part on the amount of data traffic that the system must handle during peak usage periods as well as during average usage periods. 
     The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the claims to the precise forms disclosed. Many modifications and variations are possible in view of the above teachings. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated.