Patent Publication Number: US-2021192679-A1

Title: Electronic device and omni-directional image display method of electronic device

Description:
TECHNICAL FIELD 
     Various embodiments of the present invention relate to an electronic device and method for displaying images captured in all directions by the electronic device. 
     BACKGROUND ART 
     An omni-directional or multi-directional imaging camera system refers to a camera system that may capture images in all or some directions with respect to a fixed gaze point. For example, an omni-directional or multi-directional image may be an image that includes all the views that an observer can see when he or she spins in place and looks up or down. An omni-directional imaging camera system may capture images in all directions using a camera equipped with a specific type of mirror, e.g., a hyperboloid mirror, or multiple cameras. The camera may provide captured omni-directional images to an electronic device. 
     DETAILED DESCRIPTION OF THE INVENTION 
     Technical Problem 
     A camera may provide an omni-directional image to an electronic device, and the electronic device may display the omni-directional image. The electronic device may convert the omni-directional image into two-dimension (2D) image data and display an image in the direction corresponding to the user&#39;s input, via the image data. 
     The omni-directional image includes all of the images corresponding to all the view directions. Thus, the user may have difficulty in distinguishing the plurality of omni-directional images by identifying the converted two-dimension image. 
     According to various embodiments of the present invention, an electronic device and method for displaying omni-directional image data by the electronic device may capture a captured image in an omni-directional image and configure the omni-directional image so that the object is placed in a specific position of a two-dimension image. 
     Technical Solution 
     According to various embodiments of the present invention, an electronic device comprises at least one wireless and/or wired communication circuit, a display, a processor operatively connected with the communication circuit and the display, and a memory operatively connected with the processor and storing an application including a user interface configured to display an omni-directional image on the display. The memory may store instructions executed to enable the processor to receive the omni-directional image via the communication circuit, store the omni-directional image in the memory, perform analysis on the received omni-directional image, select one of a plurality of display settings for the omni-directional image based on, at least, the analysis, and display the omni-directional image on the display according to the selected display setting. 
     According to various embodiments of the present invention, a method of displaying an omni-directional image by an electronic device comprises receiving the omni-directional image from an external electronic device, storing the omni-directional image in a memory of the electronic device, performing analysis on the received omni-directional image, selecting one of a plurality of display settings for the omni-directional image based on, at least, the analysis, and displaying the omni-directional image on a display according to the selected display setting. 
     According to various embodiments of the present invention, there is provided a storage medium storing instructions configured to be executed by at least one circuit to enable the at least one circuit to perform at least one operation that may include receiving the omni-directional image from an external electronic device, storing the omni-directional image in a memory of the electronic device, performing analysis on the received omni-directional image, selecting one of a plurality of display settings for the omni-directional image based on, at least, the analysis, and displaying the omni-directional image on a display according to the selected display setting. 
     Advantageous Effects 
     According to various embodiments of the present invention, an electronic device and method for displaying an omni-directional image by the electronic device may capture a captured image in an omni-directional image and configure the omni-directional image so that the object is placed in a specific position of a two-dimension image, allowing the user to easily identify the captured object. 
     According to various embodiments of the present invention, an electronic device and method for displaying an omni-directional image by the electronic device may identify at least one of various display settings according to the position of the user or an object captured in the omni-directional image, enabling display of the omni-directional image according to a specific display setting. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a view illustrating an electronic device in a network environment according to various embodiments; 
         FIG. 2  is a block diagram illustrating an example configuration of a camera module according to various embodiments of the present invention; 
         FIG. 3  is a view illustrating example electronic devices configuring an image processing system according to various embodiments of the present invention; 
         FIG. 4  is a block diagram illustrating an example configuration of an electronic device according to various embodiments of the present invention; 
         FIG. 5  is a flowchart illustrating an example operation of displaying an omni-directional image by an electronic device according to various embodiments of the present invention; 
         FIG. 6  is a view illustrating a 3D space according to various embodiments of the present invention; 
         FIG. 7  is a view illustrating an example omni-directional image converted into a two-dimension image according to various embodiments of the present invention; 
         FIG. 8  is a view illustrating an example omni-directional image before circle center candidate value transform is performed according to various embodiments of the present invention; 
         FIG. 9  is a view illustrating an example of an omni-directional image displayed on an electronic device according to various embodiments of the present invention; 
         FIG. 10  is a view illustrating an example of an omni-directional image displayed on an electronic device according to various embodiments of the present invention; 
         FIGS. 11A and 11B  are views illustrating various example omni-directional images to which various transform schemes are applied to identify display settings according to various embodiments of the present invention; 
         FIGS. 12A and 12B  are views illustrating various example omni-directional images to which various transform schemes are applied to identify display settings according to various embodiments of the present invention; 
         FIGS. 13, 14, and 15  are views illustrating various operations for detecting a line from an omni-directional image to identify display settings according to various embodiments of the present invention; and 
         FIG. 16  is a view illustrating an example screen layout displaying a list of omni-directional images stored in an electronic device according to various embodiments of the present invention. 
     
    
    
     MODE FOR CARRYING OUT THE INVENTION 
     Hereinafter, embodiments of the present disclosure are described with reference to the accompanying drawings. However, it should be appreciated that the present disclosure is not limited to the embodiments and the terminology used herein, and all changes and/or equivalents or replacements thereto also belong to the scope of the present disclosure. The same or similar reference denotations may be used to refer to the same or similar elements throughout the specification and the drawings. It is to be understood that the singular forms “a,” “an,” and “the” include plural references unless the context clearly dictates otherwise. As used herein, the terms “A or B” or “at least one of A and/or B” may include all possible combinations of A and B. As used herein, the terms “first” and “second” may modify various components regardless of importance and/or order and are used to distinguish a component from another without limiting the components. It will be understood that when an element (e.g., a first element) is referred to as being (operatively or communicatively) “coupled with/to,” or “connected with/to” another element (e.g., a second element), it can be coupled or connected with/to the other element directly or via a third element. 
     As used herein, the terms “configured to” may be interchangeably used with other terms, such as “suitable for,” “capable of,” “modified to,” “made to,” “adapted to,” “able to,” or “designed to” in hardware or software in the context. Rather, the term “configured to” may mean that a device can perform an operation together with another device or parts. For example, the term “processor configured (or set) to perform A, B, and C” may mean a generic-purpose processor (e.g., a CPU or application processor) that may perform the operations by executing one or more software programs stored in a memory device or a dedicated processor (e.g., an embedded processor) for performing the operations. 
     For example, examples of the electronic device according to embodiments of the present disclosure may include at least one of a smartphone, a tablet personal computer (PC), a mobile phone, a video phone, an e-book reader, a desktop PC, a laptop computer, a netbook computer, a workstation, a server, a personal digital assistant (PDA), a portable multimedia player (PMP), a MP3 player, a medical device, a camera, or a wearable device. The wearable device may include at least one of an accessory-type device (e.g., a watch, a ring, a bracelet, an anklet, a necklace, glasses, contact lenses, or a head-mounted device (HMD)), a fabric- or clothes-integrated device (e.g., electronic clothes), a body attaching-type device (e.g., a skin pad or tattoo), or a body implantable device. In some embodiments, examples of the smart home appliance may include at least one of a television, a digital video disk (DVD) player, an audio player, a refrigerator, an air conditioner, a cleaner, an oven, a microwave oven, a washer, a drier, an air cleaner, a set-top box, a home automation control panel, a security control panel, a TV box (e.g., Samsung HomeSync™ Apple TV™, or Google TV™), a gaming console (Xbox™, PlayStation™), an electronic dictionary, an electronic key, a camcorder, or an electronic picture frame. 
     According to an embodiment of the present disclosure, the electronic device may include at least one of various medical devices (e.g., diverse portable medical measuring devices (a blood sugar measuring device, a heartbeat measuring device, or a body temperature measuring device), a magnetic resource angiography (MRA) device, a magnetic resource imaging (MRI) device, a computed tomography (CT) device, an imaging device, or an ultrasonic device), a navigation device, a global navigation satellite system (GNSS) receiver, an event data recorder (EDR), a flight data recorder (FDR), an automotive infotainment device, an sailing electronic device (e.g., a sailing navigation device or a gyro compass), avionics, security devices, vehicular head units, industrial or home robots, drones, automatic teller&#39;s machines (ATMs), point of sales (POS) devices, or internet of things (IoT) devices (e.g., a bulb, various sensors, a sprinkler, a fire alarm, a thermostat, a street light, a toaster, fitness equipment, a hot water tank, a heater, or a boiler). According to various embodiments of the disclosure, examples of the electronic device may at least one of part of a piece of furniture, building/structure or vehicle, an electronic board, an electronic signature receiving device, a projector, or various measurement devices (e.g., devices for measuring water, electricity, gas, or electromagnetic waves). According to embodiments of the present invention, the electronic device may be flexible or may be a combination of the above-enumerated electronic devices. 
     According to an embodiment of the disclosure, the electronic devices are not limited to those described above. As used herein, the term “user” may denote a human or another device (e.g., an artificial intelligent electronic device) using the electronic device. 
       FIG. 1  is a block diagram illustrating an electronic device  101  in a network environment  100  according to various embodiments. 
     Referring to  FIG. 1 , the electronic device  101  in the network environment  100  may communicate with an electronic device  102  via a first network  198  (e.g., a short-range wireless communication network), or an electronic device  104  or a server  108  via a second network  199  (e.g., a long-range wireless communication network). According to an embodiment, the electronic device  101  may communicate with the electronic device  104  via the server  108 . According to an embodiment, the electronic device  101  may include a processor  120 , memory  130 , an input device  150 , a sound output device  155 , a display device  160 , an audio module  170 , a sensor module  176 , an interface  177 , a haptic module  179 , a camera module  180 , a power management module  188 , a battery  189 , a communication module  190 , a subscriber identification module (SIM)  196 , or an antenna module  197 . In some embodiments, at least one (e.g., the display device  160  or the camera module  180 ) of the components may be omitted from the electronic device  101 , or one or more other components may be added in the electronic device  101 . In some embodiments, some of the components may be implemented as single integrated circuitry. For example, the sensor module  176  (e.g., a fingerprint sensor, an iris sensor, or an illuminance sensor) may be implemented as embedded in the display device  160  (e.g., a display). 
     The processor  120  may execute, for example, software (e.g., a program  140 ) to control at least one other component (e.g., a hardware or software component) of the electronic device  101  coupled with the processor  120 , and may perform various data processing or computation. According to one embodiment, as at least part of the data processing or computation, the processor  120  may load a command or data received from another component (e.g., the sensor module  176  or the communication module  190 ) in volatile memory  132 , process the command or the data stored in the volatile memory  132 , and store resulting data in non-volatile memory  134 . According to an embodiment, the processor  120  may include a main processor  121  (e.g., a central processing unit (CPU) or an application processor (AP)), and an auxiliary processor  123  (e.g., a graphics processing unit (GPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is operable independently from, or in conjunction with, the main processor  121 . Additionally or alternatively, the auxiliary processor  123  may be adapted to consume less power than the main processor  121 , or to be specific to a specified function. The auxiliary processor  123  may be implemented as separate from, or as part of the main processor  121 . 
     The auxiliary processor  123  may control at least some of functions or states related to at least one component (e.g., the display device  160 , the sensor module  176 , or the communication module  190 ) among the components of the electronic device  101 , instead of the main processor  121  while the main processor  121  is in an inactive (e.g., sleep) state, or together with the main processor  121  while the main processor  121  is in an active state (e.g., executing an application). According to an embodiment, the auxiliary processor  123  (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., the camera module  180  or the communication module  190 ) functionally related to the auxiliary processor  123 . 
     The memory  130  may store various data used by at least one component (e.g., the processor  120  or the sensor module  176 ) of the electronic device  101 . The various data may include, for example, software (e.g., the program  140 ) and input data or output data for a command related thereto. The memory  130  may include the volatile memory  132  or the non-volatile memory  134 . 
     The program  140  may be stored in the memory  130  as software, and may include, for example, an operating system (OS)  142 , middleware  144 , or an application  146 . 
     The input device  150  may receive a command or data to be used by other component (e.g., the processor  120 ) of the electronic device  101 , from the outside (e.g., a user) of the electronic device  101 . The input device  150  may include, for example, a microphone, a mouse, or a keyboard. 
     The sound output device  155  may output sound signals to the outside of the electronic device  101 . The sound output device  155  may include, for example, a speaker or a receiver. The speaker may be used for general purposes, such as playing multimedia or playing record, and the receiver may be used for an incoming calls. According to an embodiment, the receiver may be implemented as separate from, or as part of the speaker. 
     The display device  160  may visually provide information to the outside (e.g., a user) of the electronic device  101 . The display device  160  may include, for example, a display, a hologram device, or a projector and control circuitry to control a corresponding one of the display, hologram device, and projector. According to an embodiment, the display device  160  may include touch circuitry adapted to detect a touch, or sensor circuitry (e.g., a pressure sensor) adapted to measure the intensity of force incurred by the touch. 
     The audio module  170  may convert a sound into an electrical signal and vice versa. According to an embodiment, the audio module  170  may obtain the sound via the input device  150 , or output the sound via the sound output device  155  or a headphone of an external electronic device (e.g., an electronic device  102 ) directly (e.g., wiredly) or wirelessly coupled with the electronic device  101 . 
     The sensor module  176  may detect an operational state (e.g., power or temperature) of the electronic device  101  or an environmental state (e.g., a state of a user) external to the electronic device  101 , and then generate an electrical signal or data value corresponding to the detected state. According to an embodiment, the sensor module  176  may include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor. 
     The interface  177  may support one or more specified protocols to be used for the electronic device  101  to be coupled with the external electronic device (e.g., the electronic device  102 ) directly (e.g., wiredly) or wirelessly. According to an embodiment, the interface  177  may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, or an audio interface. 
     A connecting terminal  178  may include a connector via which the electronic device  101  may be physically connected with the external electronic device (e.g., the electronic device  102 ). According to an embodiment, the connecting terminal  178  may include, for example, a HDMI connector, a USB connector, a SD card connector, or an audio connector (e.g., a headphone connector). 
     The haptic module  179  may convert an electrical signal into a mechanical stimulus (e.g., a vibration or motion) or electrical stimulus which may be recognized by a user via his tactile sensation or kinesthetic sensation. According to an embodiment, the haptic module  179  may include, for example, a motor, a piezoelectric element, or an electric stimulator. 
     The camera module  180  may capture a still image or moving images. According to an embodiment, the camera module  180  may include one or more lenses, image sensors, image signal processors, or flashes. 
     The power management module  188  may manage power supplied to the electronic device  101 . According to one embodiment, the power management module  388  may be implemented as at least part of, for example, a power management integrated circuit (PMIC). 
     The battery  189  may supply power to at least one component of the electronic device  101 . According to an embodiment, the battery  189  may include, for example, a primary cell which is not rechargeable, a secondary cell which is rechargeable, or a fuel cell. 
     The communication module  190  may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device  101  and the external electronic device (e.g., the electronic device  102 , the electronic device  104 , or the server  108 ) and performing communication via the established communication channel. The communication module  190  may include one or more communication processors that are operable independently from the processor  120  (e.g., the application processor (AP)) and supports a direct (e.g., wired) communication or a wireless communication. According to an embodiment, the communication module  190  may include a wireless communication module  192  (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module  194  (e.g., a local area network (LAN) communication module or a power line communication (PLC) module). A corresponding one of these communication modules may communicate with the external electronic device via the first network  198  (e.g., a short-range communication network, such as Bluetooth™, wireless-fidelity (Wi-Fi) direct, or infrared data association (IrDA)) or the second network  199  (e.g., a long-range communication network, such as a cellular network, the Internet, or a computer network (e.g., LAN or wide area network (WAN)). These various types of communication modules may be implemented as a single component (e.g., a single chip), or may be implemented as multi components (e.g., multi chips) separate from each other. The wireless communication module  192  may identify and authenticate the electronic device  101  in a communication network, such as the first network  198  or the second network  199 , using subscriber information (e.g., international mobile subscriber identity (IMSI)) stored in the subscriber identification module  196 . 
     The antenna module  197  may transmit or receive a signal or power to or from the outside (e.g., the external electronic device). According to an embodiment, the antenna module  197  may include one or more antennas, and, therefrom, at least one antenna appropriate for a communication scheme used in the communication network, such as the first network  198  or the second network  199 , may be selected, for example, by the communication module  190  (e.g., the wireless communication module  192 ). The signal or the power may then be transmitted or received between the communication module  190  and the external electronic device via the selected at least one antenna. 
     At least some of the above-described components may be coupled mutually and communicate signals (e.g., commands or data) therebetween via an inter-peripheral communication scheme (e.g., a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)). 
     According to an embodiment, commands or data may be transmitted or received between the electronic device  101  and the external electronic device  104  via the server  108  coupled with the second network  199 . Each of the electronic devices  102  and  104  may be a device of a same type as, or a different type, from the electronic device  101 . According to an embodiment, all or some of operations to be executed at the electronic device  101  may be executed at one or more of the external electronic devices  102 ,  104 , or  108 . For example, if the electronic device  101  should perform a function or a service automatically, or in response to a request from a user or another device, the electronic device  101 , instead of, or in addition to, executing the function or the service, may request the one or more external electronic devices to perform at least part of the function or the service. The one or more external electronic devices receiving the request may perform the at least part of the function or the service requested, or an additional function or an additional service related to the request, and transfer an outcome of the performing to the electronic device  101 . The electronic device  101  may provide the outcome, with or without further processing of the outcome, as at least part of a reply to the request. To that end, a cloud computing, distributed computing, or client-server computing technology may be used, for example. 
       FIG. 2  is a block diagram illustrating an example configuration of a camera module according to various embodiments of the present invention. 
     Referring to  FIG. 2 , the camera module  180  may include a lens assembly  210 , a flash  220 , an image sensor  230 , an image stabilizer  240 , memory  250  (e.g., buffer memory), or an image signal processor  260 . The lens assembly  210  may collect light emitted or reflected from an object whose image is to be taken. The lens assembly  210  may include one or more lenses. According to an embodiment, the camera module  180  may include a plurality of lens assemblies  210 . In this case, the camera module  180  may be, e.g., a dual camera, a 360-degree camera, or a spherical camera. The plurality of lens assemblies  210  may have the same lens attribute (e.g., view angle, focal length, auto-focusing, f number, or optical zoom), or at least one lens assembly may have at least one different lens attribute from another lens assembly. The lens assembly  210  may include, for example, a wide-angle lens or a telephoto lens. The flash  220  may emit light that is used to reinforce light from an object. The flash  220  may include one or more light emitting diodes (LEDs) (e.g., a red-green-blue (RGB) LED, a white LED, an infrared (IR) LED, or an ultraviolet (UV) LED) or a xenon lamp. 
     The image sensor  230  may obtain an image corresponding to an object by converting light transmitted from the object via the lens assembly  210  into an electrical signal. According to an embodiment, the image sensor  230  may include one selected from image sensors having different attributes, such as a RGB sensor, a black-and-white (BW) sensor, an IR sensor, or a UV sensor, a plurality of image sensors having the same attribute, or a plurality of image sensors having different attributes. Each image sensor included in the image sensor  230  may be implemented as, e.g., a charged coupled device (CCD) sensor or a complementary metal oxide semiconductor (CMOS) sensor. 
     The image stabilizer  240  may move in a particular direction, or control (e.g., adjust the read-out timing of), the image sensor  230  or at least one lens included in the lens assembly  210  to at least partially compensate for a negative effect (e.g., image blurring) on a captured image, which is caused by the motion of the camera module  180  or the electronic device  101  including the camera module  2680 , in response to the motion. According to an embodiment, the image stabilizer  240  may be implemented as, e.g., an optical image stabilizer. The image stabilizer  240  may sense such movement using a sensor module  176  (e.g., a gyro sensor or an acceleration sensor) disposed inside or outside the camera module  180 . 
     The memory  250  may store, at least temporarily, at least part of an image obtained via the image sensor  230  for a subsequent image processing task. For example, when image capturing is delayed due to shutter lag or multiple images are quickly captured, a raw image obtained (e.g., a high-resolution image) may be stored in the memory  250 , and its corresponding copy (e.g., a low-resolution image) may be previewed through the display device  160 . Thereafter, if a specified condition is met (e.g., by a user&#39;s input or system command), at least part of the raw image stored in the memory  250  may be obtained and processed, for example, by the image signal processor  260 . According to an embodiment, the memory  250  may be configured as at least part of the memory  130  or as a separate memory that is operated independently from the memory  130 . 
     The image signal processor  260  may perform image processing (e.g., depth map generation, three-dimensional (3D) modeling, panorama generation, feature point extraction, image mixing, or image compensation (e.g., noise canceling, resolution adjustment, brightness adjustment, blurring, sharpening, or softening)) on an image obtained through the image sensor  230  or an image stored in the memory  250 . Additionally or alternatively, the image signal processor  260  may perform control (e.g., exposure time control or read-out timing control) with respect to at least one (e.g., the image sensor  230 ) of the components included in the camera module  180 . An image processed by the image signal processor  260  may be stored back in the memory  250  for further processing, or may be provided to an external component (e.g., the memory  130 , the display device  160 , the electronic device  102 , the electronic device  104 , or the server  108 ) outside the camera module  180 . According to an embodiment, the image signal processor  260  may be included as at least a component of the processor  120 , or as a separate processor that is operated independently from the processor  120 . When the image signal processor  260  is configured as a separate processor, images processed by the image signal processor  260  may be displayed through the display device  160  as they are or after further processed by the processor  120 . 
     According to an embodiment, the electronic device  101  may include two or more camera modules  180  with different attributes or functions. In this case, at least one of the camera modules  180  may be, e.g., a wide-angle camera or a front camera while at least one other camera module may be a telephoto camera or a rear camera. 
       FIG. 3  is a view illustrating example electronic devices configuring an image processing system according to various embodiments of the present invention. 
     Referring to  FIG. 3 , the image processing system  300  may include an image capturing device  301  and an electronic device  302 . 
     The image capturing device  301  may include at least one lens or camera (e.g., the camera module  180 ) for capturing omni-directional images. In the following description, the term “omni-directional” may encompass the term “multi-directional.” For example, the image capturing device  301  may capture a 360-degree omni-directional image with respect to a fixed position (e.g., the position of the image capturing device  301 ). The omni-directional image may be image data (e.g., 360-degree raw data) including all the views that the user sees when he or she spins in place and looks up or down. 
     According to an embodiment, the lens of the image capturing device  301  may be a fisheye lens that may have a view angle of 180 degrees or more. For example, when the fisheye lens is positioned towards the sky, the image capturing device  301  may capture a single piece of image of an area from a constellation to the horizon. The image capturing device  301  may include a plurality of fisheye lenses to capture images in all directions. 
     According to an embodiment of the present invention, the image capturing device  301  may include a plurality of cameras with a predetermined view angle to capture images in all directions. In this case, the plurality of cameras may be provided in the image capturing device  301  to cover all directions with respect to one point. As another example, the image capturing device  301  having one or more cameras may automatically or manually be moved (e.g., moving in the direction of pitch, yaw, or roll) to capture images in all directions. 
     According to an embodiment of the present invention, the image capturing device  301  may include a plurality of cameras with a predetermined angle corresponding to the user&#39;s left and right eyes. For example, the image capturing device  301  may capture a stereoscopic image including multiple omni-directional images by capturing images in all directions corresponding to the user&#39;s left and right eyes. 
     According to various embodiments of the present invention, the electronic device  302  may identify the omni-directional image received from the image capturing device  301  and identify display settings designated for each object captured in the omni-directional image. For example, the electronic device  302  may convert the omni-directional image into a two-dimension image according to the identified display settings and display the two-dimension image. 
     According to various embodiments of the present invention, the image capturing device  301  or the electronic device  302  may be configured as the electronic device  101  of  FIG. 1  or may be configured to include at least some of the components of the electronic device  101 . For example, the image capturing device  301  may be configured to include the camera module  180  of the electronic device  101  of  FIG. 1 . 
     According to an embodiment of the present invention, the image capturing device  301  may store the captured image and relevant metadata (e.g., direction, range, area, or position of image capturing). The metadata may include information about the position, motion, direction, and properties (e.g., camera calibration parameters or image capturing state information) of the image capturing device  301  which is detected through a sensor (e.g., a global positioning system (GPS), wireless-fidelity (Wi-Fi) module, fingerprint sensor, gyroscope sensor, acceleration sensor, geo-magnetic sensor, or altitude sensor) included in the image capturing device  301 , and the image capturing device  301  may store the metadata in association with at least one of captured images. 
     According to an embodiment of the present invention, the image capturing device  301  may store the metadata with the metadata mapped (or associated) with identification information for each frame. For example, the image capturing device  101  may store sensing information about the time of capturing each frame along with the identification information about the frame. 
     According to an embodiment of the present invention, the image capturing device  301  may map the captured omni-directional image to a two-dimensional (2D) plane image, encode the mapped 2D plane image, and store the encoded image in the memory or transmit the encoded image to the electronic device  302 . 
     According to various embodiments of the present invention, the control device  302  may identify the image received from the image capturing device  301  with an image reproduction and processing device. For example, the received image may include the raw data (360-degree raw data) of the omni-directional image or the omni-directional image data stitched and transmitted by the image capturing device  301 . 
     According to various embodiments of the present invention, the electronic device  302  may decode the data of the two-dimension image received from the image capturing device  301 . The electronic device  302  may perform rendering using the decoded two-dimension image and display the rendered frames. 
     According to various embodiments of the present invention, the electronic device  302  may include various electronic devices, such as a virtual reality (VR) device, such as an HMD, a smartphone, a personal computer (PC), a television (TV), a tablet PC, or other various image processing electronic devices, and the electronic device  103  may be coupled to a housing prepared to be put on the user&#39;s head. The electronic device  302  coupled with the housing may be worn on the user&#39;s head firmly regardless of the user&#39;s motion, so that the user may observe images displayed on the display of the electronic device  302  or view images received from the image capturing device  301 . 
     According to various embodiments of the present invention, the image capturing device  301  and the electronic device  302  may include cellular modules, Wi-Fi modules, Bluetooth modules, ZigBee modules, or other communication modules to communicate with each other. 
     According to an embodiment of the present invention, the electronic device  302  may store a 3D application (or a VR application) and a 3D graphic library. The 3D application may be an application capable of providing a user with a screen that looks real. The VR means a virtual space that may be viewed around the user (or a reference point or camera), and the VR may be one obtained by rendering, on the screen, a virtual space able to represent 360 degrees, e.g., a 360-degree omni-directional image or image content, or a 3D graphic modeling space. 
       FIG. 4  is a block diagram illustrating an example configuration of an electronic device according to various embodiments of the present invention. 
     Referring to  FIG. 4 , an electronic device  302  (e.g., the electronic device  101 ) may include a processor  410  (e.g., the processor  120 ), a communication circuit  420  (e.g., the communication module  190 ), a display device  430  (e.g., the display device  160 ), and a memory  440  (e.g., the memory  130 ). 
     The processor  410  may perform the overall operation of the electronic device  302 . The processor  410  may perform control to receive omni-directionally captured image data from an external electronic device (e.g., the camera module  180 ), store the data in the memory  440 , and display the received data through the display device  430 . 
     According to various embodiments of the present invention, the processor  410  may include a transcoder  411 , an encoder  412 , and a decoder  413 . 
     The transcoder  411  may map the omni-directional image to a 2D image. For example, the transcoder  411  may map two images which have been captured by a fisheye lens and received from the image capturing device to a 3D image and map the same to a 2D image. In this case, to map the omni-directional image to the 3D image, the transcoder  411  may map the omni-directional image to an outer or inner surface of a virtual 3D model. 
     According to an embodiment of the present invention, the transcoder  411  may generate metadata for the relationship in coordinates between the mapped 3D image and the mapped 2D image while simultaneously mapping the 3D image to the 2D image. 
     The encoder  412  may encode the 2D image received from the transcoder  411  and store the encoded image in the form of streaming or a file. For example, the encoder  412  may perform encoding based on a codec standard, e.g., H.264, MPEG-4, or HEVC, and store the encoded image data in the memory  440  in the form of a video or still image. 
     The decoder  413  may decode the data delivered from the memory  440 . The decoder  413  may perform decoding using the same codec standard (e.g., H.264, MPEG-4, or HEVC) as the codec standard that was used upon encoding the two-dimension image in the device that has transmitted the omni-directional image. 
     According to various embodiments of the present invention, the processor  410  may perform rendering based on the decoded two-dimension image (hereinafter, “input frame”). For example, the processor  410  may further use metadata for rendering. The metadata may be generated on the transmit part and delivered to the receive part or may previously be stored in a storage unit (not shown) of the receive part. For example, where JPEG encoding has been performed on the transmit part, the metadata may be contained in the exif field of the JPEG, and where MPEG-4 compression has been performed on the transmit part, the metadata may be contained in the moov field of the MPEG-4. The metadata may be included in an end of the image frame. 
     The communication circuit  420  may receive omni-directional image data from an external electronic device (e.g., the image capturing device  301 ). The omni-directional image data may include omni-directional images and meta data for a specific omni-directional image. The metadata may include sensing information (e.g., the position or direction of the image capturing device, or motion information or image capturing range information about the image capturing device) sensed by the external electronic device upon capturing the omni-directional image or image identification information. 
     The display device  430  may be communicably connected with the electronic device  302  and be positioned inside or outside the electronic device  302 . The display device  430  may display the omni-directional image converted into a two-dimension image via the processor  410  (or rendering unit (not shown)). 
     The memory  440  may store the omni-directional image received from the external electronic device and meta data for the object captured in the omni-directional image. For example, the meta data for the object may include information indicating whether a designated object has been captured, the kind of object (e.g., a thing, figure, or scene), object identification information (e.g., user ‘A’ of a specific electronic device), or coordinates at which the object is displayed in the image. 
     According to various embodiments of the present invention, an electronic device  302  comprises at least one wireless and/or wired communication circuit  420 , a display  430 , a processor  410  operatively connected with the communication circuit  420  and the display  410 , and a memory  440  operatively connected with the processor and storing an application including a user interface configured to display an omni-directional image on the display  440 . The memory  440  may store instructions executed to enable the processor  410  to receive the omni-directional image via the communication circuit  420 , store the omni-directional image in the memory  440 , perform analysis on the received omni-directional image, select one of a plurality of display settings for the omni-directional image based on, at least, the analysis, and display the omni-directional image on the display  430  according to the selected display setting. 
     According to various embodiments of the present invention, the instructions may be part of the application program. 
     According to various embodiments, the plurality of display settings may include at least two of an equirectangular format, a cubic format, a little planet cylindrical panorama format, an arc format, a rectilinear format, or a partial spherical format. 
     According to various embodiments of the present invention, the instructions may be configured to enable the processor  410  to perform analysis on raw data of the omni-directional image to analyze an object or pattern. 
     According to various embodiments of the present invention, the instructions may be configured to enable the processor  410  to determine whether a user of the electronic device has been captured in the omni-directional image by analyzing a form of an object captured in the omni-directional image and as the user of the electronic device is captured in the omni-directional image, process the omni-directional image to allow an object corresponding to the user to be positioned in a center of a two-dimension image. 
     According to various embodiments of the present invention, the instructions may be configured to enable the processor  410  to identify a display setting which has been selected by the user a designated number of times or more among the plurality of display settings and convert the omni-directional image into a two-dimension image according to the identified display setting. 
     According to various embodiments of the present invention, the instructions may be configured to enable the processor  410  to, when an object corresponding to a figure cannot be identified or a background corresponding to a predesignated position is captured in the omni-directional image, convert the omni-directional image into a two-dimension image to allow an image area in a designated view direction of the omni-directional image in a panoramic form to be positioned in a center. 
     According to various embodiments of the present invention, the instructions may be configured to enable the processor  410  to, as a designated application or menu is selected, display a list of a plurality of omni-directional images stored in the electronic device, when a first omni-directional image in the list is selected, process the first omni-directional image according to at least one display setting to thereby generate at least one two-dimension image, and display the at least one generated two-dimension image. 
     According to various embodiments of the present invention, the instructions may be configured to enable the processor  410  to allow different users to receive information about the number of times in which the at least one display setting has been selected from a server (e.g., the server  108 ) through the communication circuit  420 , and display the at least one two-dimension image in an order corresponding to the received information. 
     According to various embodiments of the present invention, the instructions may be configured to enable the processor  410  to identify a predesignated display order depending on a kind of object captured in the omni-directional image and display the at least one two-dimension image in the identified display order. 
       FIG. 5  is a flowchart illustrating an example operation of displaying an omni-directional image by an electronic device according to various embodiments of the present invention. 
     Referring to  FIG. 5 , in operation  510 , an electronic device (e.g., the electronic device  101  or  302 ) may identify image data. For example, the image data may be an omni-directional image captured by the electronic device or received from an external electronic device (e.g., the image capturing device  301 ) via a communication circuit  420 . 
     In operation  520 , the electronic device may analyze the received image data. For example, the processor  410  of the electronic device may perform image data analysis. 
     In operation  530 , the electronic device may identify settings for displaying the image data based on the analysis. For example, the processor of the electronic device may identify coordinate information about an object captured in the image data and identify setting information that allows the object to be displayed in a specific position (e.g., the center of the image). 
     In operation  540 , the electronic device may display the image data according to the identified setting. For example, the processor may control to display the image data on the display device  430  according to the identified setting. 
     According to various embodiments of the present invention, a method of displaying an omni-directional image by an electronic device comprise receiving the omni-directional image from an external electronic device, storing the omni-directional image in a memory of the electronic device, performing analysis on the received omni-directional image, selecting one of a plurality of display settings for the omni-directional image based on, at least, the analysis, and displaying the omni-directional image on a display according to the selected display setting. 
     According to various embodiments, the plurality of display settings may include at least two of an equirectangular format, a cubic format, a little planet cylindrical panorama format, an arc format, a rectilinear format, or a partial spherical format. 
     According to various embodiments of the present invention, the method of displaying the omni-directional image by the electronic device may further comprise performing analysis on raw data of the omni-directional image to analyze an object or pattern. 
     According to various embodiments of the present invention, the method of displaying the omni-directional image by the electronic device may further comprise determining whether a user of the electronic device has been captured in the omni-directional image by analyzing a form of an object captured in the omni-directional image, as the user of the electronic device is captured in the omni-directional image, and processing the omni-directional image to allow an object corresponding to the user to be positioned in a center of a two-dimension image. 
     According to various embodiments of the present invention, the method of displaying the omni-directional image by the electronic device may further comprise identifying a display setting which has been selected by the user a designated number of times or more among the plurality of display settings, and converting the omni-directional image into a two-dimension image according to the identified display setting. 
     According to various embodiments of the present invention, the method of displaying the omni-directional image by the electronic device may further comprise, when an object corresponding to a figure cannot be identified or a background corresponding to a predesignated position is captured in the omni-directional image, converting the omni-directional image into a two-dimension image to allow an image area in a designated view direction of the omni-directional image in a panoramic form to be positioned in a center. 
     According to various embodiments of the present invention, the method of displaying the omni-directional image by the electronic device may further comprise, as a designated application or menu is selected, displaying a list of a plurality of omni-directional images stored in the electronic device, when a first omni-directional image in the list is selected, processing the first omni-directional image according to at least one display setting to thereby generate at least one two-dimension image, and displaying the at least one generated two-dimension image. 
     According to various embodiments of the present invention, the method of displaying the omni-directional image by the electronic device may further comprise allowing different users to receive information about the number of times in which the at least one display setting has been selected from a server through the communication circuit, and displaying the at least one two-dimension image in an order corresponding to the received information. 
     According to various embodiments of the present invention, the method of displaying the omni-directional image by the electronic device may further comprise identifying a predesignated display order depending on a kind of object captured in the omni-directional image, and displaying the at least one two-dimension image in the identified display order. 
       FIG. 6  is a view illustrating a 3D space according to various embodiments of the present invention. 
     Referring to  FIG. 6 , a 3D space  601  may be implemented by at least one of an electronic device (e.g., the electronic device  101  or  302 ), a processor of the electronic device, or a controller of the processor. 
     The 3D space  601  may be implemented by texture-mapping a wide-angle image or video to a preset 3D model  610  (e.g., a sphere having a preset radius R, a cube, or a cylinder) and positioning the user&#39;s gaze point (or virtual camera) inside (e.g., at the origin point  615 ) of the 3D model. 
     The electronic device may render a first partial image  631  (or a first screen) corresponding to a first region of the 3D space  601  according to a first gaze point (e.g., the main camera gaze point)  621  and display the same on a display (e.g., the display  160 ). 
     According to selection of a view mode (or an input for changing the gaze point), i.e., according to the angle  640  moved from the first gaze point  621  to the selected gaze point  622 , the electronic device may render a second partial image  634  (or second screen) corresponding to a second region of the 3D space  601  and display the same on the display (e.g., the display device  160 ). 
     The camera or user&#39;s line of sight (or viewing direction, rendering view port or rendering region) within the 3D space  601  may be controlled by a horizontal field of view (FOV)  651  and a vertical FOV  652 . The 3D application (or VR application) may set planes (e.g., right/left/top/bottom/near/far planes) limiting/defining the rendering view port, controlling the FOVs. 
     According to an embodiment of the present invention, the gaze point may be varied by moving the user&#39;s body part (e.g., eye, head, torso, or hand), and the second image may be generated corresponding to the change in gaze point. The gaze point may be varied or the change in gaze point may be controlled by a signal received from an external device or an external user. 
       FIG. 7  is a view illustrating an example omni-directional image converted into a two-dimension image according to various embodiments of the present invention. 
     Referring to  FIG. 7 , an omni-directional image may be generated by mapping a plurality of images (e.g., a first image  711  and a second image  712 ) captured by a plurality of lenses included in an image capturing device to a two-dimension image  720 . For example, the omni-directional image may be one transferred to the electronic device via an image capturing device (e.g., the camera module  180  or image capturing device  301 ) internally/externally connected with the electronic device (e.g., the electronic device  101  or  302 ) and capturing the omni-directional image. 
     According to various embodiments of the present invention, the electronic device may map the a plurality of captured images (e.g., the first image  711  and the second image  712 ) to a sphere and stitch the contacts of the mapped image  710  to thereby convert into a two-dimension image  720 . For example, the electronic device may identify objects captured in the omni-directional image and perform stitching so that the objects are repositioned and displayed in the two-dimension image  720 . 
     According to various embodiments of the present invention, the electronic device may stitch the mapped image  710  by setting the position of the object depending on the form of the object captured in the omni-directional image. For example, upon detecting a designated background in the omni-directional image, the electronic device may stitch the mapped image  710  into a two-dimension image  720  so that the background detected in the panoramic form is positioned in the center of the image. 
     According to various embodiments of the present invention, the electronic device may stitch into the two-dimension image in various forms depending on the form or kind of objects captured in the omni-directional image. 
       FIG. 8  is a view illustrating an example omni-directional image before circle center candidate value transform is performed according to various embodiments of the present invention. 
     Referring to  FIG. 8 , an omni-directional image is configured of two images (e.g., a first image  811  and a second image  812 ) captured by fisheye lenses, and an electronic device (e.g., the electronic device  101  or  400 ) may perform circle center candidate value (e.g., Hough) transform on the omni-directional image. 
     According to various embodiments of the present invention, the circle center candidate value transform may be a process for detecting points constituting a form of object in the grayscale effect-applied omni-directional image and detecting a figure formed of lines meeting other tangents exceeding a designated detection parameter value among tangents to the detected points. For example, as the detection parameter value increases, a smaller number of figures may be detected in the omni-directional image. 
     According to various embodiments of the present invention, the electronic device may perform the circle center candidate value transform and identify an image  810  in which the two images of the omni-directional image have been mapped to a sphere. The mapped image  810  may include lines or figures according to the shape of the detected objects. 
     According to various embodiments of the present invention, the electronic device may identify whether the shape of the object corresponds to a specific figure (e.g., a circle, rectangle or triangle) or may perform face recognition, thereby determining whether the object is the user of the electronic device, a particular thing, or the background. 
     According to various embodiments of the present invention, the electronic device may detect the object  801  corresponding to the user of the electronic device among identified objects. For example, as the object  801  has a specific shape (e.g., a circle corresponding to the arm holding the electronic device or the face), the electronic device may determine that the object  801  is the user of the electronic device. 
     According to various embodiments of the present invention, the electronic device may perform stitching on the mapped image  810  that has undergone the circle center candidate value transform. By stitching the circle center candidate value transformed mapped image  810 , the electronic device may generate a two-dimension image  820  of the omni-directional image in a panoramic form. 
       FIG. 9  is a view illustrating an example of an omni-directional image displayed on an electronic device according to various embodiments of the present invention. 
     Referring to  FIG. 9 , an electronic device (e.g., the electronic device  101  or  302 ) may perform circle center candidate value transform on an omni-directional image and perform stitching, thereby generating a two-dimension image  900 . For example, as the circle center candidate value transform is performed, the electronic device may identify that an object corresponding to a person  910 , a church building  920  or house  930  is detected from the omni-directional image. 
     According to various embodiments of the present invention, the electronic device may perform circle center candidate value transform to thereby extract the contour and identify the kind of the captured object according to the shape of the figure constituted of the extracted lines. For example, if the lines extracted are shaped as a first circle  913 , a rectangle  912  adjacent to the first circle, and a second circle  911  adjacent to the rectangle, the electronic device may determine that the object is the user who holds a camera and takes a shot. 
     According to various embodiments of the present invention, upon determining that the user has been captured in the omni-directional image, the electronic device may stitch the omni-directional image into the two-dimension image  900  so that the data in the view direction along which the user has been captured is positioned in the center of the two-dimension image  900 . 
     According to various embodiments of the present invention, the electronic device may stitch the omni-directional image into the two-dimension image  900  to be displayed in the planet format. For example, the planet format may be a display setting in which the two-dimension image  900  is displayed as if the user has been captured from above the user. The two-dimension image  900  may be one stitched so that a circular ground is formed around the user, with buildings (e.g., the church building  920  or house  930 ) placed on the ground. 
       FIG. 10  is a view illustrating an example of an omni-directional image displayed on an electronic device according to various embodiments of the present invention. 
     Referring to  FIG. 10 , an electronic device (e.g., the electronic device  101  or  302 ) may perform circle center candidate value transform on an omni-directional image and perform stitching, thereby generating a two-dimension image  1000 . For example, as the circle center candidate value transform is performed, the electronic device may identify that an object corresponding to a person  1010  and background  1020  is detected from the omni-directional image. 
     According to various embodiments of the present invention, the electronic device may stitch the omni-directional image into the two-dimension image  1000  to be displayed in another planet format. For example, the other planet format may be a display setting in which display is done as if the person  1010  has been captured from ahead of the person  1010 . The person  1010  may be placed under the center of the two-dimension image  1000 , with a planet shape placed above the person  1010  in the background. 
       FIGS. 11A and 11B  are views illustrating various example omni-directional images to which various transform schemes are applied to identify display settings according to various embodiments of the present invention. 
     Referring to  FIG. 11A , a two-dimension image  1100  may be one stitched from an omni-directional image so that a ground  1110  is shaped as a circle around an object corresponding to a person, and the background is placed around the ground. 
     According to various embodiments of the present invention, an electronic device (e.g., the electronic device  101  or  302 ) may determine whether the ground is shaped as a full circle by circle center candidate value (e.g., Hough) transform and edge value threshold (e.g., canny edge) detection algorithm. For example, the edge corresponding to the contour of the object captured in the omni-directional image may be detected using the edge value threshold detection algorithm. 
     Referring to  FIG. 11B , an electronic device may extract a plurality of circles  1101  by performing circle center candidate value transform and edge value threshold detection algorithm on the two-dimension image  1100 . If the plurality of circles  1101  more than a designated number are extracted as a result of performing the circle center candidate value transform and edge value threshold detection algorithm, the electronic device may reset suitable parameters of the circle center candidate value transform and edge detection algorithm. 
     According to various embodiments of the present invention, the suitable parameters of the circle center candidate value transform may include image size or minimum/maximum radii. The suitable parameters of the edge value threshold detection algorithm may include thresholds for setting the direction and size of gradients of the pixels of the omni-directional image. 
     According to various embodiments of the present invention, if, as the suitable parameters, the angle of the straight line of dots, the gradient size, and radius, respectively, are set to 60 degrees, 100%, and a value between 130 and 180, circles  1101  more than the designated number may be detected as a result of performing the circle center candidate value transform and edge value threshold detection algorithm. 
     According to various embodiments of the present invention, the suitable parameters may be reset. For example, the angle of straight line may be reset to 70 degrees, and the radius from  100  to  130 , and the circles  1102  may then be detected. Upon identifying that circles not more than the designated number are detected as a result of resetting the suitable parameters, the electronic device may determine the center and size of the circle corresponding to the shape of the ground in the two-dimension image  1100  based on the detected circles. 
     According to various embodiments of the present invention, the electronic device may perform circle center candidate value transform and edge value threshold detection algorithm on the omni-directional image to thereby detect a full circle and may stitch into a two-dimension image according to various display settings, based on the detected full circle. 
       FIGS. 12A and 12B  are views illustrating various example omni-directional images to which various transform schemes are applied to identify display settings according to various embodiments of the present invention. 
     Referring to  FIG. 12A , a two-dimension image  1200  may be one stitched from an omni-directional image so that a ground  1220  is shaped as a semi-circle around an object  1210  corresponding to a person, and the background is placed around the semi-circular ground. 
     According to various embodiments of the present invention, an electronic device (e.g., the electronic device  101  or  302 ) may determine whether the ground is shaped as a semi-circle by circle center candidate value transform and edge value threshold detection algorithm. 
     Referring to  FIG. 12B , an electronic device may extract a plurality of circles  1201  by performing circle center candidate value transform and edge value threshold detection algorithm on the two-dimension image  1200 . If the plurality of circles  1201  more than a designated number are extracted as a result of performing the circle center candidate value transform and canny edge detection algorithm, the electronic device may reset suitable parameters of the circle center candidate value transform and edge detection algorithm. 
     According to various embodiments of the present invention, if, as the suitable parameters, the angle of the straight line of dots, the gradient size, and radius, respectively, are set to 60 degrees, 100%, and a value between 130 and 180, circles more than the designated number may be detected as a result of performing the circle center candidate value transform and edge value threshold detection algorithm. 
     According to various embodiments of the present invention, the suitable parameters may be reset. For example, the angle of a straight line may be reset to 70 degrees, and the radius may be reset from  100  to  130 . Upon identifying that circles  1202  not more than the designated number are detected as a result of resetting the suitable parameters, the electronic device may determine the center and size of the semi-circle corresponding to the shape of the ground in the two-dimension image  1200  based on the detected circles. 
     According to various embodiments of the present invention, the electronic device may perform circle center candidate value transform and edge value threshold detection algorithm on the omni-directional image to thereby detect a semi-circle and may stitch into a two-dimension image according to various display settings, based on the detected semi-circle. 
       FIGS. 13, 14, and 15  are views illustrating various operations for detecting a line from an omni-directional image to identify display settings according to various embodiments of the present invention. 
     Referring to  FIG. 13 , a two-dimension image  1300  may be one stitched in a panoramic form of an object  1301  corresponding to a person and a background detected from an omni-directional image. 
     According to various embodiments of the present invention, an electronic device (e.g., the electronic device  101  or  302 ) may apply circle center candidate value transform and edge value threshold detection algorithm to the two-dimension image  1300 , detect at least one line  1302  from the edge value threshold detection algorithm-applied image  1300   a , and detect an object  1301  corresponding to a person from the circle center candidate value transform-performed two-dimension image  1300   b.    
     According to various embodiments of the present invention, the electronic device (e.g., the electronic device  101  or  302 ) may perform color inversion on the circle center candidate value transform-performed two-dimension image  1300   b  to separately display the edge and non-edge portion. 
     According to various embodiments of the present invention, the electronic device may distinguish between the ground and the background except for the ground in the two-dimension image  1300  based on the detected lines. For example, as the suitable parameters, the angle of straight line and the gradient size may be set to 95 degrees and 150%, respectively. 
     Referring to  FIG. 14 , a two-dimension image  1400  may be one stitched in a panoramic form of an object corresponding to a person and a background detected from an omni-directional image, with the object  1401  corresponding to the person placed under the center of the image. 
     According to various embodiments of the present invention, an electronic device (e.g., the electronic device  101  or  302 ) may perform circle center candidate value transform and edge value threshold detection algorithm and detect the object  1401  corresponding to the person from the circle center candidate value transform-performed two-dimension image  1400   a , and detect at least one line  1402  from the edge value threshold detection algorithm-applied image  1400   b.    
     According to various embodiments of the present invention, the electronic device (e.g., the electronic device  101  or  302 ) may perform color inversion on the circle center candidate value transform-performed two-dimension image  1400   a  to separately display the edge and non-edge portion. 
     According to various embodiments of the present invention, the electronic device may distinguish between the ground and the background except for the ground in the edge value threshold detection algorithm-applied two-dimension image  1400   b  based on the detected lines. For example, as the suitable parameters, the angle of a straight line and the gradient size may be set to 95 degrees and 150%, respectively. 
     Referring to  FIG. 15 , a two-dimension image  1500  may be one stitched in a panoramic form of an object corresponding to a person and a background detected from an omni-directional image, with the object  1501  corresponding to the person placed in the center of the image. 
     According to various embodiments of the present invention, an electronic device (e.g., the electronic device  101  or  302 ) may perform circle center candidate value transform and edge value threshold detection algorithm and detect the object  1501  corresponding to the person from the circle center candidate value transform-performed two-dimension image  1500   a . For example, at least one line  1502  may be detected from the edge value threshold detection algorithm-applied image  1500   b.    
     According to various embodiments of the present invention, the electronic device (e.g., the electronic device  101  or  302 ) may perform color inversion on the circle center candidate value transform-performed two-dimension image  1400   a  to separately display the edge and non-edge portion. 
     According to various embodiments of the present invention, the electronic device may distinguish between the ground and the background except for the ground in the edge value threshold detection algorithm-applied two-dimension image  1500   b  based on the detected lines  1502 . For example, as the suitable parameters, the angle of a straight line and the gradient size may be set to 60 degrees and 150%, respectively. 
     According to various embodiments of the present invention, the electronic device may reset the suitable parameters as the number of the detected lines  1502  exceeds a designated value. 
     According to various embodiments of the present invention, the electronic device (e.g., the electronic device  101  or  302 ) may perform circle center candidate value transform and edge value threshold detection algorithm on the omni-directional image, detect a plurality of lines from an image  1500   b  obtained as a result of performing them, and determine the border between the background and object in the image based on the detected lines. For example, based on the background determined using the image  1500   b , the electronic device may stitch the omni-directional image into a two-dimension image in various panoramic forms, such as placing the object  1501  corresponding to the person in the center of the image or placing the background in the center of the image. 
       FIG. 16  is a view illustrating an example screen layout displaying a list of omni-directional images stored in an electronic device according to various embodiments of the present invention. 
     Referring to  FIG. 16 , an electronic device (e.g., the electronic device  101  or  302 ) may display a list of omni-directional images stored in the electronic device. For example, the screen  1600  displaying the list of omni-directional images may be displayed as a designated application or menu is executed. 
     According to various embodiments of the present invention, the list of omni-directional images may be displayed with thumbnail images of two-dimension images separately corresponding to the omni-directional images. The two-dimension images displayed as the thumbnail images may be ones resultant from stitching the omni-directional images according to a specific display setting, based on the preference of users of the application or the preference of the user for various display settings. 
     According to various embodiments of the present invention, the server  108  may store information, such as the display setting which the users of the application have selected the most or the display setting selected the most depending on the kind (e.g., person or background) of object, as preference information for the users. For example, the server  108  may select the preference of a specific user based on the preference information or a specific display setting depending on the kind of captured object, transmit information about the selected display setting, along with raw data, to the electronic device (e.g.,  101  or  302 ), or stitch into a two-dimension image depending on the selected display setting and transmit the two-dimension image to the electronic device (e.g.,  101  or  302 ). 
     If among the images displayed in the omni-directional image list, a first image  1610  is selected, the electronic device may switch the screen  1600  of the application into an execution screen  1601  including an item  1611  for displaying the omni-directional image corresponding to the first image  1610  and a region  1620  displaying the two-dimension images (e.g.,  1621 ,  1622 , and  1623 ) of different display settings, generated using the omni-directional image, and display the execution screen  1601 . 
     According to various embodiments of the present invention, if the item  1611  is selected, the omni-directional image may be mapped to a three-dimensional space and displayed. The electronic device may display the image in the region corresponding to the view direction corresponding to the display of the electronic device among the omni-directional images based on the slope of the electronic device or various user inputs. 
     According to various embodiments of the present invention, the two-dimension images (e.g.,  1621 ,  1622 , and  1623 ) generated using the omni-directional image may be ones resultant from performing stitching in the display setting of panorama or planet format depending on the kind (e.g., a person, thing, or landscape) of the object captured in the omni-directional image. 
     According to various embodiments of the present invention, if the user&#39;s preference to the at least one display setting may not be identified, the electronic device may display a two-dimension image  1623 , in which the ground in a circular planet shape surrounds the object corresponding to the person, and the background surrounds the ground, first among the two-dimension images (e.g.,  1621 ,  1622 , and  1623 ). 
     According to various embodiments of the present invention, the electronic device may identify the order of display of the two-dimension images (e.g.,  1621 ,  1622 , and  1623 ) based on the distribution of objects captured in the omni-directional image. If, among the objects captured in the omni-directional image, an object over the horizon is larger than a designated size or has a designated shape (e.g., such as of a mountain or building), the two-dimension image  1623  may be displayed first among the two-dimension images (e.g.,  1621 ,  1622 , and  1623 ). If, among the objects captured in the omni-directional image, an object under the horizon is larger than a designated size or has a designated shape (e.g., such as of an animal or person), the two-dimension image  1621  which has been captured in a panoramic form may be displayed first among the two-dimension images (e.g.,  1621 ,  1622 , and  1623 ). 
     According to various embodiments of the present invention, if the objects captured in the omni-directional image are smaller than the designated size, the two-dimension image  1621  captured in a panoramic form may be displayed first among the two-dimension images (e.g.,  1621 ,  1622 , and  1623 ). 
     Table 1 shows example priorities of display settings of the omni-directional image designated depending on scenes or captured objects. 
     
       
         
           
               
               
             
               
                 TABLE 1 
               
               
                   
               
               
                 Scene 
                 Display setting priority 
               
               
                   
               
             
            
               
                 Default value 
                 user-centered ground planet view (e.g., 1,100) &gt; 
               
               
                   
                 sky-centered planet view, with the user placed 
               
               
                   
                 under (e.g., 1,000) &gt; panoramic view, with the 
               
               
                   
                 user placed under the center (e.g., 1,400) &gt; 
               
               
                   
                 user-centered panoramic view (e.g., 1,500) 
               
               
                 scene in which an 
                 user-centered ground planet view &gt; panoramic 
               
               
                 object not less than a 
                 view with the ground displayed as a semi-circle 
               
               
                 designated size over 
                 (e.g., 1,200) 
               
               
                 the horizon has been 
               
               
                 captured 
               
               
                 scene in which an 
                 panoramic view with the user placed under the 
               
               
                 object not less than a 
                 center &gt; sky-centered planet view with the user 
               
               
                 designated size under 
                 placed under 
               
               
                 the horizon has been 
               
               
                 captured 
               
               
                 scene in which no 
                 user-centered panoramic view (e.g., 1,500) 
               
               
                 object not less than a 
               
               
                 designated size has 
               
               
                 been captured 
               
               
                   
               
            
           
         
       
     
     Although Table 1 shows the priorities of display settings depending on various scenes or objects, embodiments are not limited thereto and the priority of display settings may be varied based on, e.g., the user&#39;s preferences or various pieces of meta data included in the omni-directional image. The omni-directional image may be converted into a two-dimension image according to other various display settings. According to various embodiments of the present invention, the electronic device (e.g.,  101  or  302 ) may display the omni-directional image list stored and, when one is selected from the list, convert the selected omni-directional image into two-dimension images according to at least one display setting and display the two-dimension images. For example, the two-dimension images may be sorted and displayed depending on the display setting priorities. 
     According to various embodiments of the present invention, the electronic device (e.g.,  101  or  302 ) may determine the kind of objects captured in the omni-directional image and the sizes among the objects to thereby make display settings, and stitch and display the omni-directional image according to the display settings. The user may identify the omni-directional image processed into the two-dimension image according to a specific display setting even without additional manipulation on the captured omni-directional image. 
     The electronic device according to various embodiments may be one of various types of electronic devices. The electronic devices may include, for example, a portable communication device (e.g., a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. According to an embodiment of the disclosure, the electronic devices are not limited to those described above. 
     It should be appreciated that various embodiments of the present disclosure and the terms used therein are not intended to limit the technological features set forth herein to particular embodiments and include various changes, equivalents, or replacements for a corresponding embodiment. With regard to the description of the drawings, similar reference numerals may be used to refer to similar or related elements. It is to be understood that a singular form of a noun corresponding to an item may include one or more of the things, unless the relevant context clearly indicates otherwise. As used herein, each of such phrases as “A or B,” “at least one of A and B,” “at least one of A or B,” “A, B, or C,” “at least one of A, B, and C,” and “at least one of A, B, or C,” may include all possible combinations of the items enumerated together in a corresponding one of the phrases. As used herein, such terms as “1st” and “2nd,” or “first” and “second” may be used to simply distinguish a corresponding component from another, and does not limit the components in other aspect (e.g., importance or order). It is to be understood that if an element (e.g., a first element) is referred to, with or without the term “operatively” or “communicatively”, as “coupled with,” “coupled to,” “connected with,” or “connected to” another element (e.g., a second element), it means that the element may be coupled with the other element directly (e.g., wiredly), wirelessly, or via a third element. 
     As used herein, the term “module” may include a unit implemented in hardware, software, or firmware, and may interchangeably be used with other terms, for example, “logic,” “logic block,” “part,” or “circuitry”. A module may be a single integral component, or a minimum unit or part thereof, adapted to perform one or more functions. For example, according to an embodiment, the module may be implemented in a form of an application-specific integrated circuit (ASIC). 
     Various embodiments as set forth herein may be implemented as software (e.g., the program  140 ) including one or more instructions that are stored in a storage medium (e.g., internal memory  136  or external memory  138 ) that is readable by a machine (e.g., the electronic device  101 ). For example, a processor (e.g., the processor  120 ) of the machine (e.g., the electronic device  101 ) may invoke at least one of the one or more instructions stored in the storage medium, and execute it, with or without using one or more other components under the control of the processor. This allows the machine to be operated to perform at least one function according to the at least one instruction invoked. The one or more instructions may include a code generated by a complier or a code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Wherein, the term “non-transitory” simply means that the storage medium is a tangible device, and does not include a signal (e.g., an electromagnetic wave), but this term does not differentiate between where data is semi-permanently stored in the storage medium and where the data is temporarily stored in the storage medium. 
     According to various embodiments of the present invention, there is provided a storage medium storing instructions configured to be executed by at least one circuit to enable the at least one circuit to perform at least one operation that may include receiving the omni-directional image from an external electronic device, storing the omni-directional image in a memory of the electronic device, performing analysis on the received omni-directional image, selecting one of a plurality of display settings for the omni-directional image based on, at least, the analysis, and displaying the omni-directional image on a display according to the selected display setting. 
     According to an embodiment, a method according to various embodiments of the disclosure may be included and provided in a computer program product. The computer program products may be traded as commodities between sellers and buyers. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read only memory (CD-ROM)), or be distributed (e.g., downloaded or uploaded) online via an application store (e.g., Play Store™), or between two user devices (e.g., smart phones) directly. If distributed online, at least part of the computer program product may be temporarily generated or at least temporarily stored in the machine-readable storage medium, such as memory of the manufacturer&#39;s server, a server of the application store, or a relay server. 
     According to various embodiments, each component (e.g., a module or a program) of the above-described components may include a single entity or multiple entities. According to various embodiments, one or more of the above-described components may be omitted, or one or more other components may be added. 
     Alternatively or additionally, a plurality of components (e.g., modules or programs) may be integrated into a single component. In such a case, according to various embodiments, the integrated component may still perform one or more functions of each of the plurality of components in the same or similar manner as they are performed by a corresponding one of the plurality of components before the integration. According to various embodiments, operations performed by the module, the program, or another component may be carried out sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be executed in a different order or omitted, or one or more other operations may be added.