Source: https://patents.google.com/patent/US10151829B2/en
Timestamp: 2019-07-22 05:16:28
Document Index: 656270360

Matched Legal Cases: ['art 202', 'art 202', 'art 202', 'art.\n2', 'art.\n13', 'Application No. 5782717', 'Application No. 05782717', 'Application No. 13153403', 'arth7', 'Application No. 10728530', 'Application No. 10729001', 'Application No. 2012', 'Application No. 2013', 'Application No. 05782717', 'Application No. 12195752', 'Application No. 2007']

US10151829B2 - Systems and associated methods for producing sonar image overlay - Google Patents
Systems and associated methods for producing sonar image overlay Download PDF
US10151829B2
US10151829B2 US15/050,724 US201615050724A US10151829B2 US 10151829 B2 US10151829 B2 US 10151829B2 US 201615050724 A US201615050724 A US 201615050724A US 10151829 B2 US10151829 B2 US 10151829B2
US15/050,724
US20170242113A1 (en
2016-02-23 Application filed by Navico Holding AS filed Critical Navico Holding AS
2016-02-23 Priority to US15/050,724 priority Critical patent/US10151829B2/en
2016-02-23 Assigned to NAVICO HOLDING AS reassignment NAVICO HOLDING AS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LAUENSTEIN, MICHAEL
2017-08-24 Publication of US20170242113A1 publication Critical patent/US20170242113A1/en
2018-12-11 Publication of US10151829B2 publication Critical patent/US10151829B2/en
Overlaying a sonar image over a chart at a corresponding location can provide a beneficial and easy to understand view of the underwater environment for a user. However, in some cases, the watercraft may be close to a boundary of the body of water when the sonar data is gathered. In such a scenario, inaccurate sonar returns or preset display distances of the sonar image can cause the resulting sonar image to be displayed over the boundary and covering land. This can be confusing and can be difficult to decipher. Embodiments of the present invention provide systems and methods for cropping the sonar image for presentation over the chart such that no portion of the image extends beyond the boundary line of the body of water. This creates a smooth and easy to read sonar image/chart display.
Embodiments of the present invention relate generally to sonar systems and, more particularly, to sonar systems, assemblies, and associated methods for producing sonar image for overlay.
Sonar (SOund Navigation And Ranging) has long been used to detect waterborne or underwater objects. For example, sonar devices may be used to determine depth and bottom topography, detect fish, locate wreckage, etc. Sonar beams from a transducer assembly can be transmitted into the underwater environment. The sonar signals reflect off objects in the underwater environment (e.g., fish, structure, sea floor bottom, etc.) and return to the transducer assembly, which converts the sonar returns into sonar data that can be used to produce an image of the underwater environment.
In some instances, the resulting image may have inaccuracies or be inconsistent with a corresponding chart such that the image can be hard to read. Applicant has developed methods and systems detailed herein to improve the resulting sonar images.
Overlaying a sonar image over a chart at a corresponding location can provide a beneficial and easy to understand view of the underwater environment for a user. In particular, a user can associate the underwater environment with their location and easily locate objects, such as fish and structure, under the water. However, in some cases, the watercraft may be close to a boundary of the body of water when the sonar data is gathered. In such a scenario, inaccurate sonar returns or preset display distances of the sonar image can cause the resulting sonar image to be displayed over the boundary and covering land. This can be confusing and can be difficult to decipher. Embodiments of the present invention provide systems and methods for cropping the sonar image for presentation over the chart such that no portion of the image extends beyond the boundary line of the body of water. This creates a smooth and easy to read sonar image/chart display.
An example embodiment of the present invention includes an apparatus comprising a processor and a memory including computer program code. The memory and the computer program code are configured to, with the processor, cause the apparatus to receive sonar data associated with an underwater environment relative to a watercraft at a location of a body of water. The memory and the computer program code are further configured to, with the processor, cause the apparatus to determine the location. The memory and the computer program code are further configured to, with the processor, cause the apparatus to determine a boundary of the body of water proximate the location, wherein the boundary corresponds to an edge of the body of water. The memory and the computer program code are further configured to, with the processor, cause the apparatus to generate an image based on the sonar data such that no portion of the image extends beyond the boundary. The memory and the computer program code are further configured to, with the processor, cause the apparatus to cause display of the image over a chart at the location such that the image does not extend beyond the boundary as indicated by the chart.
In some embodiments, the memory and the computer program code are further configured to, with the processor, cause the apparatus to generate the image by determining a portion of the image that extends beyond the boundary and removing the portion of the image prior to causing display of the image over the chart at the location.
In some embodiments, the memory and the computer program code are further configured to, with the processor, cause the apparatus to generate the image by comparing sonar image data based on the sonar data with one of a polyline or a polygon associated with the boundary and generating the image without sonar image data that extends past the one of the polyline or the polygon.
In some embodiments, the memory and the computer program code are further configured to, with the processor, cause the apparatus to determine a preset distance that corresponds to a desired distance from the watercraft that a user would like the image to span. Additionally, the memory and the computer program code are further configured to, with the processor, cause the apparatus to determine that the preset distance extends beyond the boundary.
In some embodiments, the memory and the computer program code are further configured to, with the processor, cause the apparatus to filter the sonar data to remove sonar data that extends beyond the boundary. In some embodiments, the sonar data includes a plurality of sonar returns that each define a distance component in a plane defined leading from the watercraft to the boundary. Additionally, the memory and the computer program code may be further configured to, with the processor, cause the apparatus to determine a boundary threshold distance in the plane leading from the watercraft to the boundary that corresponds to the distance from the watercraft to the boundary. Additionally, the memory and the computer program code may be further configured to, with the processor, cause the apparatus to filter the sonar data by removing each sonar return that defines a distance in the plane defined leading from the watercraft to the boundary that is greater than the boundary threshold distance.
In some embodiments, the sonar data is current sonar data and the location is the current location. In such embodiments, the memory and the computer program code may be further configured to, with the processor, cause the apparatus to determine the boundary of the body of water proximate the current location in substantially real-time and generate the image based on the current sonar data such that no portion of the image extends beyond the boundary in substantially real-time.
In some embodiments, the memory and the computer program code may be further configured to, with the processor, cause the apparatus to determine the boundary by determining one or more locations of the body of water that define a zero depth such that the boundary is determined based on current depth data.
In some embodiments, the memory and the computer program code are further configured to, with the processor, cause the apparatus to determine the boundary by determining a pre-stored boundary of the body of water.
In some embodiments, the sonar data is 3D sonar data.
Some example embodiments further provide a system with the apparatus detailed above. The system further comprises a transducer assembly configured to emit one or more sonar beams, receive return echoes of the one or more sonar beams, and convert the return echoes into the sonar data. The transducer assembly is configured to be affixed to the watercraft and is electrically connected to the apparatus. The system may further include a display device electrically connected to the apparatus and configured to display the image over the chart.
Some example embodiments of the present invention provide a method comprising receiving sonar data associated with an underwater environment relative to a watercraft at a location of a body of water. The method further comprises determining, by a processor, the location. The method further comprises determining a boundary of the body of water proximate the location, wherein the boundary corresponds to an edge of the body of water. The method further comprises generating an image based on the sonar data such that no portion of the image extends beyond the boundary. The method further comprises causing display of the image over a chart at the location such that the image does not extend beyond the boundary as indicated by the chart.
Some example embodiments of the present invention provide a non-transitory computer-readable medium comprised of at least one memory device having computer program instructions stored thereon. The computer program instructions are configured, when run by a processor, to receive sonar data associated with an underwater environment relative to a watercraft at a location of a body of water. The computer program instructions are further configured, when run by a processor, to determine the location. The computer program instructions are further configured, when run by a processor, to determine a boundary of the body of water proximate the location, wherein the boundary corresponds to an edge of the body of water. The computer program instructions are further configured, when run by a processor, to generate an image based on the sonar data such that no portion of the image extends beyond the boundary. The computer program instructions are further configured, when run by a processor, to cause display of the image over a chart at the location such that the image does not extend beyond the boundary as indicated by the chart.
FIG. 1 illustrates a watercraft emitting sonar beams near a boundary of the body of water, in accordance with some embodiments discussed herein;
FIG. 2 shows an example sonar image displayed over a chart, in accordance with some embodiments discussed herein;
FIGS. 3A and 3B each show an example sonar image displayed over a chart, wherein a portion of the sonar image extends beyond the boundary of the body of water on the chart, in accordance with some embodiments discussed herein;
FIG. 4 shows an example sonar image displayed over a chart, wherein the sonar image has been generated such that no portion of the image extends beyond the boundary, in accordance with some embodiments discussed herein;
FIG. 5 shows a block diagram illustrating an example sonar system, in accordance with some embodiments discussed herein; and
FIG. 6 illustrates a flowchart of an example method of generating and displaying a sonar image according to some embodiments discussed herein.
Sonar systems (e.g., sonar system 100 in FIG. 5) are commonly employed by boaters, sport fishermen, search and rescue personnel, researchers, surveyors, and others. With reference to FIG. 1, a watercraft 10 may include a sonar system that includes a transducer assembly 15. The transducer assembly 15 can be attached to the watercraft 10 and configured to transmit one or more sonar beams 12 (shown based on theoretical −3 dB range) into the underwater environment. Sonar signals from the one or more sonar beams can reflect off objects (such as the floor 14 of the body of water) and return (as sonar returns) to the transducer assembly 15. The transducer assembly 15 (such as through one or more transducers) is configured to convert the sonar returns into electrical energy to form sonar data. This sonar data is received by one or more marine electronic devices (e.g., marine electronic device 105 in FIG. 5) and used to generate an image of the underwater environment (e.g., a sonar image) that can be presented on a display (e.g., display 140 in FIG. 5).
Though the example illustrated transducer assembly 15 is attached so as to transmit the sonar beams 12 generally downwardly and to the side of the watercraft, other orientations/directions of the transducer assembly 15 are contemplated (e.g., forward facing, rearward facing, downward facing only, side facing only, among others without limitation). Likewise, while the example illustrated transducer assembly 15 is shown with three separate sonar beams that each have a fan-shape corresponding to a linear transducer, other sonar beam shapes (e.g., conical, elliptical, etc.), transducer shapes (circular, square, etc.), and number of transducers are contemplated by embodiments of the present invention without limitation.
Embodiments of the present invention provide a sonar system (e.g., sonar system 100 of FIG. 5) and associated methods for providing an improved sonar image for overlay, such as on a chart. In some embodiments, the sonar system 100 is configured to receive sonar data, such as from the transducer assembly (e.g., transducer assembly 15, 150), associated with an underwater environment relative to the watercraft. As detailed herein, using the sonar data, the sonar system 100 is configured to form a sonar image that can be displayed to a user on a display (e.g., display 140).
In some embodiments, the sonar system 100 is configured to display the sonar image over a chart at the location corresponding to where the sonar data was captured. In this regard, the sonar image builds up across the chart, showing the user detailed structure, which allows the user to easily discern the location of certain underwater objects. This can occur in real-time or can be later displayed. In some embodiments, the sonar image can be presented as an additional layer over the chart and can be presented with varying transparency levels—thereby allowing a user, in some cases, to still see a portion of the chart underneath the sonar image. FIG. 2 shows an example display 200 of a sonar image 230 being displayed over a chart 202 at a corresponding location of the watercraft 210 as it travels along. U.S. Pat. No. 9,182,486, entitled “Sonar Rendering Systems and Associated Methods” and co-assigned with the assignee of the present invention, provides additional detail regarding example systems and methods of overlaying sonar imagery on charts and other data and is hereby incorporated by reference herein in its entirety.
In some embodiments, the sonar system 100 is configured such that the sonar beams span a configured (e.g., preset, user-configured, etc.) distance out to the side, front, or back of the watercraft. For example, the sonar image 230 in FIG. 2 is the result of a preset distance (e.g., 60 ft.). In the depicted embodiment, the distance configured for the sonar system of the watercraft 210 is less than the distance from the watercraft 210 to the boundary 225 of the body of water. As such, the sonar image 230 is displayed over the chart 202 in clean looking manner, making it easy to discern the structure shown by the sonar image 230 and the details of the chart (such as the boundary line 225 and the land 204).
Referring back to FIG. 1, depending on the location of the watercraft 10 on the body of water and/or the configuration of the transducer assembly 15, one or more of the sonar beams may by projected into a boundary 25 of the body of water (e.g., the edge of the water and the land 21). In this regard, sonar signals from the one or more sonar beams may reflect off a surface 26 associated with the boundary 25. The resulting sonar image may show the curvature or features of the underwater surface 26 leading up to the boundary 25. For example, FIG. 3A illustrates a situation where the distance configuration of the sonar system has been changed to extend the reach of the sonar beams and thus the corresponding sonar image (e.g., from 60 ft. at 230 to 120 ft. at 232). In this regard, a portion of the sonar image 233 shows structure leading to the boundary 225 of the body of water. However, in addition to showing the structure leading up to the boundary 225, the sonar image 232 also shows sonar imagery displayed beyond the boundary 225 and onto the land 204 (e.g., portion 224 of the sonar image 232).
FIG. 3B illustrates another example where the sonar image 232 includes a portion 224 that extends beyond the boundary 225 of the body of water. In this circumstance, the watercraft has traveled along a track 211 of a river. The proximity of both edges of the land 204 cause a portion 224 of the sonar image 232 on both sides of the watercraft to be displayed beyond the respective boundaries 225.
The extended image beyond the boundary of the body of water can be, in some cases, a product of false or misread sonar returns. For example, referring to FIG. 1, while sonar returns should theoretically bounce off the surface 26 corresponding to the boundary 25, due to softness of the surface or other factors (e.g., multiple reflected sonar returns) sonar returns may be received by the transducer assembly 15 in such a manner as to indicate a false reading that would theoretically extend beyond the actual boundary.
Another factor that may lead to a portion of the image extending beyond the boundary is that the preset distance for the sonar beam from the watercraft may cause an extended rendering of the image to fill the extra space when forming the image. For example, with reference to FIG. 3A, the sonar beam 232 may be the result of a request by a user to capture sonar returns extending 120 ft. from the watercraft. When generating the image, the sonar system of the watercraft may determine that it does not have sonar returns extending all the way out to 120 ft. In such a scenario the sonar system may generate the image so as to fill in the extra space leading up to 120 ft.
Whether by false readings or extended rendering to account for lack of corresponding sonar returns (or some other reason), having a sonar image that extends beyond a boundary when displayed over a chart can be confusing and cause the overall image (chart and sonar image) to appear inconsistent and difficult to read. As such, as detailed herein, embodiments of the present invention seek to present a clearer and more accurate overall image by removing the portion of the sonar image that extends beyond the boundary of the body of water on the chart.
In some embodiments, the sonar system 100 is configured to gather sonar data, such as by receiving at a processor 110 (or sonar signal processor 115) of the marine electronic device 105 sonar data associated with an underwater environment relative to a watercraft at a location of a body of water.
In some embodiments, the sonar data is gathered using a transducer assembly 150. In some embodiments, the transducer assembly 150 is configured to emit one or more sonar beams, receive sonar return echoes of the one or more sonar beams, and convert the sonar return echoes into the sonar data. The transducer assembly 150 may be affixed to the watercraft and electrically connected to a marine electronic device 105 of the sonar system 100. For example, with reference to FIG. 1, the transducer assembly 15 may emit one or more sonar beams 12 into the underwater environment, receive sonar returns from the sonar beams and convert the sonar returns into sonar data for use by the marine electronic device 105 (shown in FIG. 5).
As noted above, embodiments of the present invention contemplate various orientations of the transducer assembly 150 with respect to the watercraft (e.g., downward facing, side facing, forward facing, rearward facing, etc.). Along these same lines, embodiments of the present invention also contemplate use with varying orientation or rotating transducer assemblies (e.g., on a trolling motor or other rotatable device). Further, some embodiments of the present invention contemplate use with different types of sonar data (e.g., 2D sonar data, 3D sonar data).
In some embodiments, the sonar system 100 is configured to determine the location corresponding to the received sonar data. For example, the sonar system may use the position sensor 145 to obtain a location of the watercraft when the sonar data is received. With reference to FIGS. 2, 3A, and 4, the sonar system may determine the current location of the watercraft 210 when the sonar data is received.
In some embodiments, the sonar system 100 is configured to determine a boundary of the body of water proximate the location, wherein the boundary corresponds to an edge of the body of water. For example, with reference to FIGS. 2, 3A, and 4, the sonar system may determine the boundary 225 of the body of water that is proximate the watercraft 210.
In some embodiments, the sonar system 100 is configured to determine only the portion of the boundary of the body of water that is proximate (or pertinent) to the current location and currently received sonar data. Alternatively, the sonar system 100 may be configured to determine the entire boundary of the body of water.
In this regard, the sonar system 100, such as through the processor 110 and/or memory 120, is configured to look up or determine the boundary of the body of water. Other means of obtaining the boundary include use of the communications interface 130 to obtain the information from an external network 102. In some embodiments, the boundary of the body of water may be pre-stored in one or more charts that are accessible by the sonar system. Additionally or alternatively, the sonar system 100 is configured to determine the boundary by determining a zero depth reading for the chart (e.g., a zero depth ring). In such a manner, the sonar system 100 may be configured to continually update the water level of the body of water to determine the zero depth and, thus, the boundary of the body of water based on the current depth. This provides a continuously updating method that provides high accuracy.
Once the boundary of the body of water is determined, the sonar system 100 may convert the information or generate a polyline or polygon that represents the boundary in graphical format (e.g., XY coordinates).
In some embodiments, the sonar system 100 is configured to determine a preset or user set distance that corresponds to a desired distance from the watercraft that a user would like the sonar image to span. As noted herein, the sonar system 100 can be configured such that the transducer assembly 150 emits sonar beams to gather sonar data corresponding to a set distance away from the watercraft (e.g., out to the side of or in front of the watercraft). For example, with reference to FIG. 3A, the distance setting changed between the gathering of sonar data for the sonar image(s) 230 versus the sonar data for the sonar image(s) 232. As such, in some embodiments, the sonar system 100 is configured to determine the set distance that the transducer assembly is configured to gather data from. In some embodiments, the transducer assembly gathers data at a preset transmit distance and the sonar system merely filters the data according to the indicated preset distance.
Using that information and the determined boundary, the sonar system 100 may then be configured to determine if the preset distance extends beyond the boundary of the body of water. For example, with reference to FIG. 3A, the sonar system (such as through the processor 110) may determine that the boundary 225 is 80 ft. to the starboard side of the watercraft 210, but that the sonar system has a preset distance of 120 ft. for the desired sonar image. In this case, the preset distance of the desired sonar image extends beyond the boundary 225. Thus, any sonar image that is presented on a chart will extend beyond the boundary of the body of water (see e.g., FIG. 3A).
In some embodiments, the sonar system 100 (such as through the processor 110 and/or sonar signal processor 115) is configured to generate an image (e.g., a sonar image) based on the sonar data such that no portion of the image extends beyond the boundary of the body of water. Further, in some embodiments, the sonar system 100 (such as through the processor 110 and the display 140) is configured to cause display of the image over a chart at the determined location such that the image does not extend beyond the boundary as indicated by the chart. For example, with reference to the displayed overall image 200 in FIG. 4, the sonar system has removed a portion of the sonar image, thus altering the sonar image 232′ such that no portion of the sonar image extends beyond the boundary 225 when displayed over the chart 202. By removing the portion of the sonar image 232′ that would extend beyond the boundary, a clearer and easier to read overall image (chart and sonar image) is presented to the user. This allows the user to distinguish the boundary of the water and more easily locate underwater features (e.g., structure, fish, etc.).
Embodiments of the present invention contemplate any number of different ways to generate the image with the portion extending beyond the boundary removed. In some embodiments, the boundary is determined and used to remove any portion of the image extending beyond the boundary prior to rendering. In this regard, in some embodiments, the sonar system 100 is configured to determine a portion (or multiple portions, pixels, sonar image data, etc.) of the image that extends beyond the boundary and remove that portion (or multiple portions, pixels, sonar image data, etc.) of the image prior to causing display of the image over the chart at the location.
In some embodiments, the sonar system 100 is configured to generate the image by comparing sonar image data based on the sonar data with one or more coordinates or other quantifiable factor/object (e.g., a polyline or a polygon) associated with the boundary of the body of water. Then, the image may be generated without sonar data that extends past the coordinate or other quantifiable factor/object (polyline or polygon). For example, in some embodiments, the boundary is formed as a polyline or a polygon with a coordinate (e.g., X, Y) denoting the boundary (or a portion of the boundary). As the image is being generated, each generated portion of the image (e.g., pixel) is checked against the coordinate denoting the boundary and either allowed to be generated or removed.
For example, in some embodiments, as the watercraft travels along, a strip of sonar data is gathered (e.g., to the sides of the watercraft). Due to the small size of the strip in the travelling direction, the received sonar data can be assumed to be one dimensional for purposes of generating the image (e.g., each sonar return may define a Y coordinate). Thus, as the sonar returns are converted into sonar image data for generation of the image, the sonar data can be assigned a Y coordinate. This Y coordinate can be checked against the boundary that the theoretical strip of sonar image data would intersect. The image can then be generated up to the boundary.
Though this example embodiment describes using a Y coordinate, embodiments of the present invention also contemplate use with two dimensional (2D) or three dimensional (3D) coordinates and 2D or 3D sonar data respectively. Thus, a 2D or 3D sonar image can be formed with a similar approach, where the planned portion (or pixel) of the image can be checked against a known boundary and either allowed to be generated or removed prior to generation of the image.
In some embodiments, the sonar system 100 may be configured to filter the sonar data to remove any sonar returns that extend beyond the boundary. For example, the received sonar data may include a plurality of sonar returns that each define one or more characteristics (e.g., time of the return). The one or more characteristics can be converted into coordinates that define the location of the sonar return (e.g., a 1D, 2D, or 3D coordinate system). Each sonar return can then be checked against the boundary that has been similarly assigned coordinates. For example, each sonar return may define a distance component in a plane defined leading from the watercraft to the boundary (e.g., a Y coordinate). The sonar system 100 may be configured to determine a boundary threshold distance in the plane leading from the watercraft to the boundary that corresponds to the distance from the watercraft to the boundary (e.g., a Y coordinate for the boundary). Then, the sonar system 100 may be configured to filter the sonar data by removing each sonar return that defines a distance in the plane defined leading from the watercraft to the boundary (e.g., Y coordinate for the sonar return) that is greater than the boundary threshold distance. This removes any faulty sonar returns from the sonar data prior to generation of the corresponding image. Though the above example embodiment details a single coordinate being used to filter the sonar data, other coordinate systems and dimensions are contemplated (e.g., 2D coordinates for sonar returns can be used to filter 2D sonar data, 3D coordinates for sonar returns can be used to filter 3D sonar data, etc.). Such example embodiments that filter the sonar data provide a cleaner set of sonar data that removes the faulty sonar returns to produce a more accurate image.
Embodiments of the present invention are contemplated to be used in substantially real-time (e.g., as the sonar data is being gathered). In such embodiments, the sonar system 100 is configured to determine the boundary of the body of water proximate the current location of the watercraft in substantially real-time and generate the image based on the current sonar data in substantially real-time such that no portion of the image extends beyond the boundary. In this regard, any configurations of the sonar system described herein can be performed in substantially real-time to provide an on the go accurate and useful overall image of the sonar image displayed over the chart. Additionally, however, embodiments of the present invention are also contemplated to be processed afterward (such as in a web application accessed by a user after returning home).
FIG. 5 shows a block diagram of an example sonar system 100 capable for use with several embodiments of the present invention. As shown, the sonar system 100 may include a number of different modules or components, each of which may comprise any device or means embodied in either hardware, software, or a combination of hardware and software configured to perform one or more corresponding functions. For example, the sonar system 100 may include a transducer assembly 150 and a marine electronic device 105.
The sonar system 30 may also include one or more communications modules configured to communicate with one another in any of a number of different manners including, for example, via a network. In this regard, the communications module 38 may include any of a number of different communication backbones or frameworks including, for example, Ethernet, the NMEA 2000 framework, GPS, cellular, WiFi, or other suitable networks. The network may also support other data sources, including GPS, autopilot, engine data, compass, radar, etc. Numerous other peripheral devices such as one or more wired or wireless multi-function displays (e.g., a marine electronic device 105) may be included in the sonar system 100.
The marine electronic device 105 may include a processor 110, a sonar signal processor 115, a memory 120, a user interface 135, a display 140, one or more sensors (e.g., position sensor 145, orientation sensor (not shown), etc.), and a communication interface 130.
The processor 110 (e.g., a sonar signal processor 115) may be any means configured to execute various programmed operations or instructions stored in a memory device such as a device or circuitry operating in accordance with software or otherwise embodied in hardware or a combination of hardware and software (e.g., a processor operating under software control or the processor embodied as an application specific integrated circuit (ASIC) or field programmable gate array (FPGA) specifically configured to perform the operations described herein, or a combination thereof) thereby configuring the device or circuitry to perform the corresponding functions of the processor 110 as described herein. In this regard, the processor 110 may be configured to analyze electrical signals communicated thereto to provide sonar data indicative of the size, location, shape, etc. of objects detected by the sonar system 100. For example, the processor 110 may be configured to receive sonar return data and process the sonar return data to generate sonar image data for display to a user (e.g., on display 140).
In some embodiments, the processor 110 may be further configured to implement signal processing or enhancement features to improve the display characteristics or data or images, collect or process additional data, such as time, temperature, GPS information, waypoint designations, or others, or may filter extraneous data to better analyze the collected data. It may further implement notices and alarms, such as those determined or adjusted by a user, to reflect depth, presence of fish, proximity of other watercraft, etc.
The memory 120 may be configured to store instructions, computer program code, marine data, such as sonar data, chart data, location/position data, and other data associated with the sonar system in a non-transitory computer readable medium for use, such as by the processor.
The communication interface 130 may be configured to enable connection to external systems (e.g., an external network 102). In this manner, the marine electronic device 105 may retrieve stored data from a remote, external server via the external network 102 in addition to or as an alternative to the onboard memory 120.
The position sensor 145 may be configured to determine the current position and/or location of the marine electronic device 105. For example, the position sensor 145 may comprise a GPS or other location detection system.
The display 140 may be configured to display images and may include or otherwise be in communication with a user interface 135 configured to receive an input from a user. The display 140 may be, for example, a conventional LCD (liquid crystal display), a touch screen display, mobile device, or any other suitable display known in the art upon which images may be displayed.
In any of the embodiments, the display 140 may present one or more sets of marine data (or images generated from the one or more sets of data). Such marine data includes chart data, radar data, weather data, location data, position data, orientation data, sonar data, or any other type of information relevant to the watercraft. In some embodiments, the display may be configured to present such marine data simultaneously as one or more layers or in split-screen mode. In some embodiments, a user may select any of the possible combinations of the marine data for display.
In some further embodiments, various sets of data, referred to above, may be superimposed or overlaid onto one another. For example, the sonar image may be applied to (or overlaid onto) a chart (e.g., a map or navigational chart). Additionally or alternatively, depth information, weather information, radar information, or any other sonar system inputs may be applied to one another.
Although the display 140 of FIG. 5 is shown as being directly connected to the processor 110 and within the marine electronic device 105, the display 140 could alternatively be remote from the processor 110 and/or marine electronic device 105. Likewise, in some embodiments, the sonar signal processor 115, the position sensor 145, and/or user interface 135 could be remote from the marine electronic device 105.
The transducer assembly 150 according to an exemplary embodiment may be provided in one or more housings that provide for flexible mounting options with respect to the watercraft. In this regard, for example, the housing may be mounted onto the hull of the watercraft or onto a device or component that may be attached to the hull (e.g., a trolling motor or other steerable device, or another component that is mountable relative to the hull of the vessel), including a bracket that is adjustable on multiple axes, permitting omnidirectional movement of the housing.
The transducer assembly 150 may include one or more transducers or transducer elements positioned within the housing. Each transducer may be configured as transmit/receive, transmit-only, or receive-only with respect to transmitting one or more sonar beams and receiving sonar returns. In some embodiments, each of the transducer elements may be positioned within the housing so as to point toward a predetermined area under, to the side, or the front of the watercraft. The shape of a transducer element may largely determine the type of beam that is formed when that transducer element transmits a sonar pulse (e.g., a circular transducer element emits a cone-shaped beam, a linear transducer emits a fan-shaped beam, etc.). Embodiments of the present invention are not limited to any particular shape transducer. Likewise, transducer elements may comprise different types of materials that cause different sonar pulse properties upon transmission. For example, the type of material may determine the strength of the sonar pulse. Additionally, the type of material may affect the sonar returns received by the transducer element. As such, embodiments of the present invention are not meant to limit the shape or material of the transducer elements. Further, transducers may configured to transmit and/or receive at different frequencies. In this regard, embodiments of the present invention are not meant to be limited to certain frequencies.
Additionally, in some embodiments, the transducer assembly 150 may have a sonar signal processor (e.g., sonar signal processor 115) and/or other components positioned within the housing. For example, one or more transceivers (e.g., transmitter/receiver), transmitters, and/or receivers may be positioned within the housing and configured to cause the one or more transducers to transmit sonar beams and/or receive sonar returns from the one or more transducers. In some embodiments, the sonar signal processor, transceiver, transmitter, and/or receiver may be positioned in a separate housing.
Example Flowchart(s) and Operations
Embodiments of the present invention provide methods, apparatus and computer program products for providing accurate sonar images for overlay onto a chart such that no portion of the sonar image extends beyond a boundary of the body of water indicated by the chart. Various examples of the operations performed in accordance with embodiments of the present invention will now be provided with reference to FIG. 6.
FIG. 6 illustrates a flowchart according to an example method for providing accurate sonar images for overlay onto a chart such that no portion of the sonar image extends beyond a boundary of the body of water indicated by the chart according to an example embodiment 500. The operations illustrated in and described with respect to FIG. 6 may, for example, be performed by, with the assistance of, and/or under the control of one or more of the processor 110, sonar signal processor 115, memory 120, communication interface 130, user interface 135, position sensor 145, display 140, and/or transducer assembly 150. Operation 502 may comprise receiving sonar data associated with an underwater environment at a location of a watercraft. The processor 110, sonar signal processor 115, and/or transducer assembly 150 may, for example, provide means for performing operation 502. Operation 504 may comprise determining the location of the watercraft. The processor 110, sonar signal processor 115, position sensor 145, and/or communication interface 130 may, for example, provide means for performing operation 504. Operation 506 may comprise determining a boundary of the body of water proximate the location. The processor 110, sonar signal processor 115, memory 120, and/or communication interface 130 may, for example, provide means for performing operation 506. Operation 508 may comprise generating an image based on the sonar data such that no portion of the image extends beyond the boundary. The processor 110 and/or sonar signal processor 115 may, for example, provide means for performing operation 508. Operation 510 may comprise causing display of the image over a chart at the location such that the image does not extend beyond the boundary as indicated by the chart. The processor 110, sonar signal processor 115, communication interface 130, display 140, and/or memory 120 may, for example, provide means for performing operation 510.
FIG. 6 illustrates a flowchart of a system, method, and computer program product according to an example embodiment. It will be understood that each block of the flowcharts, and combinations of blocks in the flowcharts, may be implemented by various means, such as hardware and/or a computer program product comprising one or more computer-readable mediums having computer readable program instructions stored thereon. For example, one or more of the procedures described herein may be embodied by computer program instructions of a computer program product. In this regard, the computer program product(s) which embody the procedures described herein may be stored by, for example, the memory 120 and executed by, for example, the processor 110 or sonar signal processor 115. As will be appreciated, any such computer program product may be loaded onto a computer or other programmable apparatus (for example, a marine electronic device 105) to produce a machine, such that the computer program product including the instructions which execute on the computer or other programmable apparatus creates means for implementing the functions specified in the flowchart block(s). Further, the computer program product may comprise one or more non-transitory computer-readable mediums on which the computer program instructions may be stored such that the one or more computer-readable memories can direct a computer or other programmable device (for example, a marine electronic device 105) to cause a series of operations to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus implement the functions specified in the flowchart block(s).
receive sonar data associated with an underwater environment relative to a watercraft at a location of a body of water, wherein the sonar data comprises sonar returns received by one or more sonar transducers of the watercraft, wherein the sonar returns are received from the underwater environment corresponding to a volume extending outwardly from the watercraft;
determine the location of the watercraft at an instance in which the sonar returns are received;
generate a sonar image from the sonar returns of the sonar data received by the one or more sonar transducers, wherein the sonar image is formed using sonar returns that were only received from the one or more transducers of the watercraft at the location and the instance in which the sonar returns were received;
determine a direction and a distance the sonar image extends from the watercraft when the sonar image would be positioned over a chart at a position corresponding to the location of the watercraft at the instance in which the sonar returns were received;
determine, based on the determined direction and distance, that the sonar image would extend over a boundary of the body of water, wherein the boundary corresponds to an edge of the body of water;
generate an updated sonar image based on the sonar image and the boundary of the body of the water such that no portion of the updated sonar image extends beyond the boundary, wherein at least a portion of the sonar image that would otherwise extend over the boundary is not present in the updated sonar image; and
cause display of the updated sonar image over the chart at the location such that the updated sonar image does not extend beyond the boundary as indicated by the chart.
2. The apparatus of claim 1, wherein the memory and the computer program code are further configured to, with the processor, cause the apparatus to generate the updated sonar image by:
determining a portion of the sonar image that extends beyond the boundary; and
removing the portion of the sonar image prior to causing display of the updated sonar image over the chart at the location.
3. The apparatus of claim 1, wherein the memory and the computer program code are further configured to, with the processor, cause the apparatus to generate the updated sonar image by:
comparing sonar image data based on the sonar data with one of a polyline or a polygon associated with the boundary; and
generating the updated sonar image without sonar image data that extends past the one of the polyline or the polygon.
4. The apparatus of claim 1, wherein the memory and the computer program code are further configured to, with the processor, cause the apparatus to:
determine a preset distance that corresponds to a desired distance from the watercraft that a user would like the sonar image to span; and
determine that the preset distance extends beyond the boundary.
5. The apparatus of claim 1, wherein the memory and the computer program code are further configured to, with the processor, cause the apparatus to filter the sonar data to remove sonar data that extends beyond the boundary.
6. The apparatus of claim 5, wherein the sonar returns each define a distance component in a plane defined leading from the watercraft to the boundary, wherein the memory and the computer program code are further configured to, with the processor, cause the apparatus to:
determine a boundary threshold distance in the plane leading from the watercraft to the boundary that corresponds to the distance from the watercraft to the boundary; and
filter the sonar data by removing each sonar return that defines a distance in the plane defined leading from the watercraft to the boundary that is greater than the boundary threshold distance.
7. The apparatus of claim 1, wherein the sonar data is current sonar data and the location is the current location, and wherein the memory and the computer program code are further configured to, with the processor, cause the apparatus to:
determine the boundary of the body of water proximate the current location in substantially real-time; and
generate the updated sonar image based on the current sonar data such that no portion of the updated sonar image extends beyond the boundary in substantially real-time.
8. The apparatus of claim 1, wherein the memory and the computer program code are further configured to, with the processor, cause the apparatus to determine the boundary by determining one or more locations of the body of water that define a zero depth such that the boundary is determined based on current depth data.
9. The apparatus of claim 1, wherein the memory and the computer program code are further configured to, with the processor, cause the apparatus to determine the boundary by determining a pre-stored boundary of the body of water.
10. The apparatus of claim 1, wherein the sonar data is 3D sonar data.
11. A system with the apparatus of claim 1, wherein the system further comprises:
a transducer assembly comprised of the one or more sonar transducers, wherein the transducer assembly is configured to be affixed to the watercraft and is electrically connected to the apparatus; and
a display device electrically connected to the apparatus and configured to display the updated sonar image over the chart.
receiving sonar data associated with an underwater environment relative to a watercraft at a location of a body of water, wherein the sonar data comprises sonar returns received by one or more sonar transducers of the watercraft, wherein the sonar returns are received from the underwater environment corresponding to a volume extending outwardly from the watercraft;
determining, by a processor, the location of the watercraft at an instance in which the sonar returns are received;
generating a sonar image from the sonar returns of the sonar data received by the one or more sonar transducers, wherein the sonar image is formed using sonar returns that were only received from the one or more transducers of the watercraft at the location and the instance in which the sonar returns were received;
determining a direction and a distance the sonar image extends from the watercraft when the sonar image would be positioned over a chart at a position corresponding to the location of the watercraft at the instance in which the sonar returns were received;
determining, based on the determined direction and distance, that the sonar image would extend over a boundary of the body of water, wherein the boundary corresponds to an edge of the body of water;
generating an updated sonar image based on the sonar image and the boundary of the body of the water such that no portion of the updated sonar image extends beyond the boundary, wherein at least a portion of the sonar image that would otherwise extend over the boundary is not present in the updated sonar image; and
causing display of the updated sonar image over the chart at the location such that the updated sonar image does not extend beyond the boundary as indicated by the chart.
13. The method of claim 12, wherein generating the updated sonar image comprises:
14. The method of claim 12, wherein generating the updated sonar image comprises:
determining a preset distance that corresponds to a desired distance from the watercraft that a user would like the sonar image to span; and
determining that the preset distance extends beyond the boundary.
16. The method of claim 12 further comprising filtering the sonar data to remove sonar data that extends beyond the boundary.
17. A non-transitory computer-readable medium comprised of at least one memory device having computer program instructions stored thereon, the computer program instructions being configured, when run by a processor, to:
18. The computer-readable medium of claim 17, wherein the computer program instructions are further configured, when run by the processor, to generate the updated sonar image by:
19. The computer-readable medium of claim 17, wherein the computer program instructions are further configured, when run by the processor, to generate the updated sonar image by:
20. The computer-readable medium of claim 17, wherein the computer program instructions are further configured, when run by the processor, to filter the sonar data to remove sonar data that extends beyond the boundary.
US15/050,724 2016-02-23 2016-02-23 Systems and associated methods for producing sonar image overlay Active 2037-03-05 US10151829B2 (en)
US15/050,724 US10151829B2 (en) 2016-02-23 2016-02-23 Systems and associated methods for producing sonar image overlay
US20170242113A1 US20170242113A1 (en) 2017-08-24
US10151829B2 true US10151829B2 (en) 2018-12-11
ID=59631064
US15/050,724 Active 2037-03-05 US10151829B2 (en) 2016-02-23 2016-02-23 Systems and associated methods for producing sonar image overlay
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Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B01—Tri-Beam; Feb. 12, 2014; 31 pages.
Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B02-Hydrography, Humminbird 757 c; Feb. 12, 2014; 38 pages.
Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B02—Hydrography, Humminbird 757 c; Feb. 12, 2014; 38 pages.
Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B03-Airmar-R209, Humminbird 757 c; Feb. 12, 2014; 43 pages.
Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B03—Airmar-R209, Humminbird 757 c; Feb. 12, 2014; 43 pages.
Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B04-Airmar-R209, Hydrography, Humminbird 757c, Sato, Aimar-R99, Zimmerman; Feb. 12, 2014; 59 pages.
Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B04—Airmar-R209, Hydrography, Humminbird 757c, Sato, Aimar-R99, Zimmerman; Feb. 12, 2014; 59 pages.
Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B05-Odom Echoscan; Feb. 12, 2014; 45 pages.
Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B05—Odom Echoscan; Feb. 12, 2014; 45 pages.
Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B06-Kongsberg EA 400/600; Feb. 12, 2014; 37 pages.
Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B06—Kongsberg EA 400/600; Feb. 12, 2014; 37 pages.
Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B07-Nishimori, Thompson, Betts, Zimmerman, Melvin, Tri-Beam, Odom Echoscan; Feb. 12, 2014; 22 pages.
Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B07—Nishimori, Thompson, Betts, Zimmerman, Melvin, Tri-Beam, Odom Echoscan; Feb. 12, 2014; 22 pages.
Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B08-Hydrography, Betts et al, Humminbird 997c and 757c; Feb. 12, 2014; 61 pages.
Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B08—Hydrography, Betts et al, Humminbird 997c and 757c; Feb. 12, 2014; 61 pages.
Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B09-Humminbird 997c; Feb. 12, 2014; 40 pages.
Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B09—Humminbird 997c; Feb. 12, 2014; 40 pages.
Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B10-Betts; Feb. 12, 2014; 29 pages.
Invalidity Contention; U.S. Pat. No. 8,300,499 Invalidity Claim Chart; Exhibit B10—Betts; Feb. 12, 2014; 29 pages.
Invalidity Contention; U.S. Pat. No. 8,305,840 Invalidity Claim Chart; Exhibit A01-Hydrography; Feb. 12, 2014; 30 pages.
Invalidity Contention; U.S. Pat. No. 8,305,840 Invalidity Claim Chart; Exhibit A01—Hydrography; Feb. 12, 2014; 30 pages.
Invalidity Contention; U.S. Pat. No. 8,305,840 Invalidity Claim Chart; Exhibit A02-Hydrography, Lustig; Feb. 12, 2014; 42 pages.
Invalidity Contention; U.S. Pat. No. 8,305,840 Invalidity Claim Chart; Exhibit A02—Hydrography, Lustig; Feb. 12, 2014; 42 pages.
Invalidity Contention; U.S. Pat. No. 8,305,840 Invalidity Claim Chart; Exhibit A03-Hydrography, Adams; Feb. 12, 2014; 49 pages.
Invalidity Contention; U.S. Pat. No. 8,305,840 Invalidity Claim Chart; Exhibit A03—Hydrography, Adams; Feb. 12, 2014; 49 pages.
Invalidity Contention; U.S. Pat. No. 8,305,840 Invalidity Claim Chart; Exhibit A04-Hydrography, Boucher '522; Feb. 12, 2014; 39 pages.
Invalidity Contention; U.S. Pat. No. 8,305,840 Invalidity Claim Chart; Exhibit A04—Hydrography, Boucher '522; Feb. 12, 2014; 39 pages.
Invalidity Contention; U.S. Pat. No. 8,305,840 Invalidity Claim Chart; Exhibit A05-Hydrography, Boucher '522, Adam; Feb. 12, 2014; 54 pages.
Invalidity Contention; U.S. Pat. No. 8,305,840 Invalidity Claim Chart; Exhibit A05—Hydrography, Boucher '522, Adam; Feb. 12, 2014; 54 pages.
Invalidity Contention; U.S. Pat. No. 8,305,840 Invalidity Claim Chart; Exhibit A06-Hydrography, Adams, Betts; Feb. 12, 2014; 29 pages.
Invalidity Contention; U.S. Pat. No. 8,305,840 Invalidity Claim Chart; Exhibit A06—Hydrography, Adams, Betts; Feb. 12, 2014; 29 pages.
Invalidity Contention; U.S. Pat. No. 8,305,840 Invalidity Claim Chart; Exhibit A07-Hydrography, Boucher '522, Adam, Betts; Feb. 12, 2014; 33 pages.
Invalidity Contention; U.S. Pat. No. 8,305,840 Invalidity Claim Chart; Exhibit A07—Hydrography, Boucher '522, Adam, Betts; Feb. 12, 2014; 33 pages.
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