Wearable electronic device for obtaining depth map, operating method thereof, and recording medium

Abstract

A wearable electronic device according to an embodiment comprises: a housing; a first depth camera disposed on a first surface of the housing and having a first field of view; a second depth camera disposed on the first surface of the housing and having a second field of view; a third camera disposed on the first surface of the housing and having a third field of view; an eye tracking camera disposed on a second surface of the housing and configured to track a user's gaze; at least one processor; and a memory for storing instructions. When executed individually or collectively by the at least one processor, the instructions may cause the wearable electronic device to: use the eye tracking camera to identify the gaze direction of the user wearing the wearable electronic device; identify at least one camera, having a field of view capable of capturing a region corresponding to the gaze direction, among the first depth camera, the second depth camera, and the third camera on the basis of the gaze direction; obtain a first depth map that faces the gaze direction by using the at least one camera identified on the basis of the gaze direction; obtain a first image that faces the gaze direction by using the third camera, on the basis of identifying a first region included in the first depth map in which a depth value is not identified; identify the color of a portion of the first image corresponding to the first region included in the first depth map, on the basis of comparing the first image to the first depth map; adjust light being output from at least one of the first depth camera or the second depth camera, on the basis of identifying that the color of the portion of the first image obtained by using the third camera is a designated color; and obtain a second depth map that faces the gaze direction by using the at least one camera, on the basis of the adjusted light being output from at least one of the first depth camera or the second depth camera.

Description

Wearable electronic device for acquiring a depth map, method of operation thereof, and recording medium

[0001] Embodiments of the present disclosure relate to a wearable electronic device for obtaining a depth map, an operating method thereof, and a recording medium.

[0002] The variety of services and additional features offered through wearable electronic devices, such as augmented reality glasses (AR glasses), video see-through (VST) devices, and head-mounted displays (HMDs), is steadily increasing. To enhance the utility of these devices and satisfy the needs of diverse users, telecommunications service providers and electronic device manufacturers are competitively developing electronic devices that offer diverse features and differentiate themselves from competitors. Consequently, the various functions offered through wearable electronic devices are also becoming increasingly sophisticated.

[0003] Wearable electronic devices can provide users with a realistic experience by displaying virtual images while worn on the body. Wearable electronic devices can replace smartphones in various fields, such as gaming, entertainment, education, and social networking services (SNS). Users can access realistic content through wearable electronic devices, and through interaction, they can experience the sensation of being immersed in a virtual world.

[0004] The above information may be provided as background information to aid in understanding this document. None of the above is claimed to be prior art related to this document or can be used to determine prior art.

[0005] According to one embodiment, a wearable electronic device may include a housing, a first depth camera disposed on a first surface of the housing and having a first angle of view, a second depth camera disposed on the first surface of the housing and having a second angle of view, a third camera disposed on the first surface of the housing and having a third angle of view, a gaze tracking camera disposed on the second surface of the housing and configured to track a gaze of a user, at least one processor, and a memory storing instructions.

[0006] According to one embodiment, the instructions, when executed by the at least one processor, may cause the wearable electronic device to determine a gaze direction of a user wearing the wearable electronic device using the gaze tracking camera.

[0007] According to one embodiment, the instructions, when executed by the at least one processor, may cause the wearable electronic device to identify, based on the gaze direction, at least one camera among the first depth camera, the second depth camera, or the third camera having a field of view capable of capturing an area corresponding to the gaze direction.

[0008] According to one embodiment, the instructions, when executed by the at least one processor, may cause the wearable electronic device to obtain a first depth map facing the gaze direction using the at least one camera identified based on the gaze direction.

[0009] According to one embodiment, the instructions, when executed by the at least one processor, may cause the wearable electronic device to acquire a first image facing the gaze direction using the third camera based on identifying a first area in which a depth value included in the first depth map is not identified.

[0010] According to one embodiment, the instructions, when executed by the at least one processor, may cause the wearable electronic device to determine a color of a portion of the first image corresponding to the first area included in the first depth map based on comparing the first image with the first depth map.

[0011] In one embodiment, the instructions, when executed by the at least one processor, may cause the wearable electronic device to adjust light output from at least one of the first depth camera or the second depth camera based on determining that the color of the portion of the first image acquired using the third camera is a designated color.

[0012] In one embodiment, the instructions, when executed by the at least one processor, may cause the wearable electronic device to obtain a second depth map facing the gaze direction using the at least one camera based on the adjusted light output from at least one of the first depth camera or the second depth camera.

[0013] According to one embodiment, a method of operating a wearable electronic device may include an operation of checking a gaze direction of a user wearing the wearable electronic device using a gaze tracking camera of the wearable electronic device.

[0014] According to one embodiment, a method of operating a wearable electronic device may include an operation of identifying, based on the gaze direction, at least one camera among a first depth camera of the wearable electronic device, a second depth camera of the wearable electronic device, or a third camera of the wearable electronic device, which has an angle of view capable of capturing an area corresponding to the gaze direction.

[0015] According to one embodiment, a method of operating a wearable electronic device may include an operation of obtaining a first depth map facing the gaze direction using the at least one camera identified based on the gaze direction.

[0016] According to one embodiment, a method of operating a wearable electronic device may include an operation of obtaining a first image facing the gaze direction using the third camera based on identifying a first area in which a depth value included in the first depth map is not identified.

[0017] According to one embodiment, a method of operating a wearable electronic device may include an operation of determining a color of a portion of the first image corresponding to the first area included in the first depth map based on comparing the first image with the first depth map.

[0018] According to one embodiment, a method of operating a wearable electronic device may include adjusting light output from at least one of the first depth camera or the second depth camera based on determining that the color of the portion of the first image acquired using the third camera is a specified color.

[0019] According to one embodiment, a method of operating a wearable electronic device may include obtaining a second depth map facing the gaze direction using at least one camera based on the adjusted light output from at least one of the first depth camera or the second depth camera.

[0020] According to one embodiment, a non-transitory recording medium may store instructions that can execute an operation of determining a gaze direction of a user wearing the wearable electronic device using a gaze tracking camera of the wearable electronic device.

[0021] According to one embodiment, a non-transitory recording medium may store instructions that can execute an operation of identifying, based on the gaze direction, at least one camera among a first depth camera of the wearable electronic device, a second depth camera of the wearable electronic device, or a third camera of the wearable electronic device, which has an angle of view capable of capturing an area corresponding to the gaze direction.

[0022] According to one embodiment, the non-transitory recording medium may store instructions that can execute an operation of obtaining a first depth map facing the gaze direction using the at least one camera identified based on the gaze direction.

[0023] According to one embodiment, the non-transitory recording medium may store instructions that can execute an operation of acquiring a first image facing the viewing direction using the third camera based on identifying a first area in which a depth value included in the first depth map is not identified.

[0024] According to one embodiment, the non-transitory recording medium can store instructions that can perform an operation of determining a color of a portion of the first image corresponding to the first area included in the first depth map based on comparing the first image with the first depth map.

[0025] According to one embodiment, the non-transitory recording medium may store instructions that can execute an operation of adjusting light output from at least one of the first depth camera or the second depth camera based on determining that the color of the portion of the first image acquired using the third camera is a specified color.

[0026] According to one embodiment, the non-transitory recording medium can store instructions that can execute an operation of obtaining a second depth map facing the viewing direction using at least one camera based on the adjusted light output from at least one of the first depth camera or the second depth camera.

[0027] FIG. 1 is a block diagram of an electronic device within a network environment according to various embodiments.

[0028] FIGS. 2A and 2B are drawings showing the front and back of a wearable electronic device according to one embodiment.

[0029] FIG. 3 is a schematic block diagram of a wearable electronic device according to one embodiment.

[0030] FIG. 4A is a flowchart illustrating an operation of a wearable electronic device according to one embodiment of the present invention to acquire a depth map.

[0031] FIG. 4b is a flowchart illustrating an operation of a wearable electronic device according to one embodiment of the present invention to provide a guide for moving a user's gaze direction.

[0032] FIG. 5 is a flowchart illustrating an operation of a wearable electronic device according to one embodiment to check at least one camera among a first depth camera, a second depth camera, and a third camera.

[0033] FIG. 6A is a drawing for explaining the angles of view of the first depth camera, the second depth camera, and the third camera according to one embodiment.

[0034] FIG. 6B is a diagram for explaining an operation of a wearable electronic device according to one embodiment to identify at least one camera for obtaining a depth map as a first depth camera, a second depth camera, and a third camera.

[0035] FIG. 6C is a diagram illustrating an operation of a wearable electronic device according to one embodiment to identify at least one camera for obtaining a depth map as a second depth camera and a third camera.

[0036] FIG. 6D is a diagram illustrating an operation of a wearable electronic device according to one embodiment of the present invention to identify at least one camera for obtaining a depth map as a third camera.

[0037] FIG. 7 is a flowchart illustrating an operation of a wearable electronic device according to one embodiment of the present invention to increase at least one of an output time or an output intensity of light output from at least one of a first depth camera or a second depth camera.

[0038] FIG. 8 is a diagram illustrating a first depth map acquired by a wearable electronic device using at least one camera according to one embodiment.

[0039] FIG. 9 is a diagram showing an image acquired by a wearable electronic device using a third camera according to one embodiment.

[0040] FIG. 10 is a diagram illustrating a second depth map acquired by a wearable electronic device using at least one camera according to one embodiment.

[0041] FIG. 1 is a block diagram of an electronic device (101) within a network environment (100) according to various embodiments. Referring to FIG. 1, in the network environment (100), the electronic device (101) may communicate with the electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with at least one of the electronic device (104) or the server (108) via a second network (199) (e.g., a long-range wireless communication network). In one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197). In some embodiments, the electronic device (101) may omit at least one of these components (e.g., the connection terminal (178)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).

[0042] The processor (120) may, for example, execute 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) connected to the processor (120) and perform various data processing or operations. According to one embodiment, as at least a part of the data processing or operations, the processor (120) may store commands or data received from other components (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the commands or data stored in the volatile memory (132), and store result data in a non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or an auxiliary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor) that can operate independently or together with the main processor (121). For example, when the electronic device (101) includes the main processor (121) and the auxiliary processor (123), the auxiliary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a given function. The auxiliary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

[0043] The auxiliary processor (123) may control at least a portion of functions or states associated with at least one component (e.g., a display module (160), a sensor module (176), or a communication module (190)) of the electronic device (101), for example, on behalf 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 (e.g., application execution) state. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, in the electronic device (101) itself where artificial intelligence is performed, or can be performed through a separate server (e.g., server (108)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may include a software structure.

[0044] The memory (130) can store various data used by at least one component (e.g., processor (120) or sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., program (140)) and input data or output data for commands related thereto. The memory (130) can include volatile memory (132) or non-volatile memory (134).

[0045] The program (140) may be stored as software in the memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

[0046] The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0047] The audio output module (155) can output audio signals to the outside of the electronic device (101). The audio output module (155) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. In one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0048] The display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. According to one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.

[0049] The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150), output sound through the sound output module (155), or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (101).

[0050] The sensor module (176) can detect the operating status (e.g., power or temperature) of the electronic device (101) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (176) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0051] The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) with an external electronic device (e.g., the electronic device (102)). In one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0052] The connection terminal (178) may include a connector through which the electronic device (101) may be physically connected to an external electronic device (e.g., electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0053] The haptic module (179) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. According to one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0054] The camera module (180) can capture still images and videos. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0055] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

[0056] A battery (189) may power at least one component of the electronic device (101). In one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0057] The communication module (190) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may operate independently from the processor (120) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one 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 module). Among these communication modules, the corresponding communication module can communicate with an external electronic device (104) via a first network (198) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (199) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) can verify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196).

[0058] The wireless communication module (192) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (192) can support various requirements specified in the electronic device (101), an external electronic device (e.g., the electronic device (104)), or a network system (e.g., the second network (199)). According to one embodiment, the wireless communication module (192) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for URLLC realization.

[0059] The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). In one embodiment, the antenna module (197) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). In one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network (198) or the second network (199), may be selected from the plurality of antennas by, for example, the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device via the at least one selected antenna. In some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).

[0060] In one embodiment, the antenna module (197) may generate a mmWave antenna module. In one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high frequency band.

[0061] At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).

[0062] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) may, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (101) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In another embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server utilizing machine learning and / or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0063] FIGS. 2A and 2B are drawings showing the front and back of a wearable electronic device according to one embodiment.

[0064] Referring to FIGS. 2A and 2B, in one embodiment, camera modules (211, 212, 213, 214, 215, 216) and / or depth sensors (217) for obtaining information related to the surrounding environment of the wearable electronic device (200) may be arranged on a first side (210) of the housing (e.g., the front side of the wearable electronic device (200)).

[0065] In one embodiment, the camera modules (211, 212) can acquire images related to the surrounding environment of the wearable electronic device (200).

[0066] In one embodiment, the camera modules (213, 214, 215, 216) can acquire images while the wearable electronic device (200) is worn by a user. The camera modules (213, 214, 215, 216) can be used for hand detection, tracking, and recognition of user gestures (e.g., hand movements). The camera modules (213, 214, 215, 216) can be used for 3DoF, 6DoF head tracking, position (spatial, environmental) recognition, and / or movement recognition. In one embodiment, the camera modules (211, 212) can also be used for hand detection and tracking, and user gestures.

[0067] In one embodiment, a depth sensor (217) may be configured to transmit a signal and receive a signal reflected from a subject, and may be used for purposes such as time of flight (TOF) to determine the distance to an object. Instead of or in addition to the depth sensor (217), camera modules (213, 214, 215, 216) may determine the distance to an object.

[0068] According to one embodiment, a camera module (225, 226) for facial recognition and / or a display (221) (and / or a lens) may be disposed on a second side (220) of the housing (e.g., the back of the wearable electronic device (200)).

[0069] In one embodiment, a face recognition camera module (225, 226) adjacent to the display may be used to recognize a user's face, or may recognize and / or track both eyes of the user.

[0070] In one embodiment, the display (221) (and / or lens) may be disposed on the second side (220) of the wearable electronic device (200). In one embodiment, the wearable electronic device (200) may not include camera modules (215, 216) among the plurality of camera modules (213, 214, 215, 216).

[0071] As described above, according to one embodiment, the wearable electronic device (200) may have a form factor for being worn on a user's head. The wearable electronic device (200) may further include a strap and / or a wearing member for being secured to a body part of the user. The wearable electronic device (200) may provide a user experience based on augmented reality, virtual reality, and / or mixed reality while being worn on the user's head.

[0072] FIG. 3 is a schematic block diagram of a wearable electronic device according to one embodiment.

[0073] Referring to FIG. 3, according to one embodiment, a wearable electronic device (301) (e.g., the electronic device (101) of FIG. 1, the wearable electronic device (200) of FIG. 2A or 2B) may acquire a depth map for a gaze direction of a user wearing the wearable electronic device (301). According to one embodiment, when an area in which a depth value is not determined among areas included in the depth map is identified, the wearable electronic device (301) may determine whether the color of the area identified through a camera (e.g., the third camera (370)) is a designated color (e.g., black). For example, the designated color may include black or a color close to black (e.g., a color with a brightness lower than a designated value). For example, the designated color may also include a color close to black with a saturation lower than a designated value (e.g., dark gray) even if it is not completely black. For example, the designated color may be changed to various colors for which a depth value cannot be accurately acquired, as will be apparent to those skilled in the art.

[0074] According to one embodiment, when the color of the corresponding area identified through the camera (e.g., the third camera (370)) is determined to be a designated color (e.g., black), the wearable electronic device (301) may increase the output intensity or the output time of the light output from the depth camera (e.g., the first depth camera (330) and the second depth camera (340)). For example, the depth camera may include a light output unit that outputs light and a light reception unit (or light receiving unit) that receives (or receives) the output light after it is reflected by a specific object. For example, the light output unit may include at least one light output element (e.g., an LED). For example, the light reception unit may include at least one photodiode. According to one embodiment, the wearable electronic device (301) may increase the output intensity or the output time of the light output from the light output units of the depth cameras (e.g., the first depth camera (330) and the second depth camera (340)). Through this, the wearable electronic device (301) can increase the amount of light reflected from an object included in an area where a depth value is not determined. According to one embodiment, the wearable electronic device (301) can also increase the light output time for a light receiving unit of a depth camera (e.g., the first depth camera (330) and the second depth camera (340)) to receive light reflected by a specific object. Through this, the wearable electronic device (301) can increase the amount of light reflected and received (or received) from an object included in an area where a depth value is not determined.

[0075] According to one embodiment, the wearable electronic device (301) may re-acquire a depth map for a gaze direction of a user wearing the wearable electronic device (301) through the depth cameras (e.g., the first depth camera (330) and the second depth camera (340)) after increasing the output intensity, the light output time, and / or the light reception time of light output from the depth cameras (e.g., the first depth camera (330) and the second depth camera (340)). Through this, the depth value of an area corresponding to an area where a depth value is not confirmed among the areas of the re-acquired depth map may be confirmed.

[0076] According to one embodiment, a wearable electronic device (301) may include a memory (310) (e.g., memory (130) of FIG. 1), a processor (320) (e.g., processor (120) of FIG. 1), a first depth camera (330), a second depth camera (340), an eye tracking camera (350), a third camera (370), and a display (360) (e.g., display (160) of FIG. 1).

[0077] According to one embodiment, the wearable electronic device (301) may be implemented identically or similarly to the electronic device (101) or the wearable electronic device (200) of FIG. 1. According to one embodiment, the processor (320) may control the overall operation of the wearable electronic device (301).

[0078] According to one embodiment, the wearable electronic device (301) may be implemented as a wearable electronic device that can be worn on a user's body (e.g., head). For example, the wearable electronic device (301) may be implemented as an augmented reality glass (AR glass), a video see-through (VST) device, or a head-mounted display (HMD) device. However, this is merely an example, and the wearable electronic device (301) may be implemented as various devices.

[0079] According to one embodiment, the gaze tracking camera (350) may represent a gaze tracking camera that tracks the gaze of a user. The gaze tracking camera (350) may include an infrared (IR) camera. For example, the gaze tracking camera (350) may be disposed on a second surface of the housing (e.g., 220 of FIG. 2B ). For example, the gaze tracking camera (350) may be implemented in a manner identical to or similar to the camera modules (225, 226) of FIG. 2B . However, the number and arrangement structure of the gaze tracking cameras (350) included in the wearable electronic device (301) may be identical to or similar to the camera modules (225, 226) of FIG. 2B , or may be different from each other.

[0080] According to one embodiment, the third camera (370) may be implemented as an RGB camera. According to one embodiment, the third camera (370) may also be implemented as a mono camera. For example, the third camera (370) may be arranged on the first side of the housing (e.g., 210 of FIG. 2A). According to one embodiment, the third camera (370) may acquire an image related to the surrounding environment of the wearable electronic device (301). For example, the third camera (370) may be implemented in a manner identical to or similar to the camera modules (211, 212) of FIG. 2A. However, the number and arrangement structure of the third cameras (370) included in the wearable electronic device (301) may be identical to or similar to the camera modules (211, 212) of FIG. 2A, or may be different from each other.

[0081] According to one embodiment, the first depth camera (330) and the second depth camera (340) can obtain distance information between the wearable electronic device (301) and the object. The processor (320) can obtain a depth value based on the distance information between the electronic device (301) and the object obtained from each depth camera (330 or 340). For example, the processor (330) can obtain a first depth value based on the distance information between the electronic device (301) (or the first depth camera (330)) and the object using the first depth camera (330). The processor (330) can obtain a second depth value based on the distance information between the electronic device (301) (or the second depth camera (340)) and the object using the second depth camera (340). According to one embodiment, the first depth camera (330) may include a direct time of flight (dToF) camera, and the second depth camera (340) may include an indirect time of flight (iToF) camera. For example, the first depth camera (330) and the second depth camera (340) may be disposed on a first surface of the housing (e.g., 210 of FIG. 2A). For example, the first depth camera (330) and the second depth camera (340) may be implemented to be identical or similar to the camera modules (213, 214, 215, 216) of FIG. 2A. However, the number and arrangement structure of the first depth camera (330) and the second depth camera (340) included in the wearable electronic device (301) may be identical or similar to the camera modules (213, 214, 215, 216) of FIG. 2A, or may be different from each other.

[0082] In one embodiment, the third angle of view of the third camera (370) may be larger than the first angle of view of the first depth camera (330) and the second angle of view of the second depth camera (340). In one embodiment, the second angle of view of the second depth camera (340) may be larger than the first angle of view of the first depth camera (330). For example, the third angle of view may be approximately 126 degrees, the first angle of view may be approximately 85 degrees, and the second angle of view may be approximately 100 degrees. However, this is merely an example, and the first angle of view, the second angle of view, and the third angle of view may include various angles of view.

[0083] According to one embodiment, the processor (320) may obtain a depth map for a scene (e.g., a scene corresponding to an image including at least one object) captured through at least one camera using at least one of the first depth camera (330) (e.g., a dToF camera), the first depth camera (340) (e.g., an iToF camera), or the third camera (370). For example, the processor (320) may obtain a depth map for the scene using a first depth value for the scene obtained from the first depth camera (330), a second depth value for the scene obtained from the second depth camera (330), and / or a third depth value for the scene obtained from the third camera (370). For example, when the processor (320) captures the scene while the first depth camera (330), the second depth camera (340), and the third camera (370) are all turned on, the processor (320) can obtain a depth map for the scene using the first depth value, the second depth value, and the third depth value. For example, when the processor (320) captures the scene while the first depth camera (330) and the third camera (370) are turned on, the processor (320) can obtain a depth map for the scene using the first depth value and the third depth value. For example, when the processor (320) captures the scene while the second depth camera (340) and the third camera (370) are turned on, the processor (320) can obtain a depth map for the scene using the second depth value and the third depth value. Alternatively, for example, when the processor (320) captures the scene while the third camera (370) is turned on, the processor (320) can obtain a depth map for the scene using the third depth value.

[0084] According to one embodiment, the processor (320) can check the gaze direction of a user wearing the wearable electronic device (301) through the gaze tracking camera (350).

[0085] According to one embodiment, the processor (320) may output a plurality of invisible lights to the user's eyes through a plurality of light-emitting elements included in the gaze tracking camera (350). According to one embodiment, the plurality of light-emitting elements may output light in the infrared (IR) band. According to one embodiment, the processor (320) may obtain an image of the user's eyes through the gaze tracking camera (350). According to one embodiment, the processor (320) may identify a plurality of points (glints) focused on the user's eyes from the image. According to one embodiment, the processor (320) may identify the user's gaze direction based on the plurality of points focused on the user's eyes.

[0086] According to one embodiment, the processor (320) may identify at least one range including the user's gaze direction among a first range corresponding to a first angle of view of a first depth camera (330) (e.g., 620 of FIG. 6), a second range corresponding to a second angle of view of a second depth camera (340) (e.g., 630 of FIG. 6), and a third range corresponding to a third angle of view of a third camera (370) (e.g., 610 of FIG. 6). According to one embodiment, the processor (320) may identify at least one camera corresponding to at least one range. For example, portions of the first range, the second range, and / or the third range may overlap with each other.

[0087] According to one embodiment, the processor (320) may turn ON only at least one camera corresponding to at least one range including the user's gaze direction among the first depth camera (330), the second depth camera (340), and the third camera (370), and turn OFF the remaining cameras excluding the at least one camera among the first depth camera (330), the second depth camera (340), and the third camera (370). According to one embodiment, the processor (320) may obtain a depth value using at least one camera. Through this, the processor (320) may reduce the current consumption of the wearable electronic device (301) by turning ON only the camera corresponding to the range including the user's gaze direction.

[0088] According to one embodiment, the processor (320) may acquire a first depth map using the first depth camera (330), the second depth camera (340), and the third camera (370) based on determining that the gaze direction is included in the first range (620), the second range (630), and the third range (610).

[0089] According to one embodiment, the processor (320) may identify the first depth camera (330), the second depth camera (340), and the third camera (370) as at least one camera based on determining that the gaze direction is included in the first range (620) and the third range (610) and not included in the second range (630). According to one embodiment, the processor (320) may also identify the first depth camera (330) and the third camera (370) as at least one camera based on determining that the gaze direction is included in the first range (620) and the third range (610) and not included in the second range (630).

[0090] According to one embodiment, the processor (320) can identify the third camera (370) as at least one camera based on determining that the gaze direction is included in the third range (610) and not included in the first range (620) and the second range (630).

[0091] According to one embodiment, the processor (320) can identify the second depth camera (340) and the third camera (370) as at least one camera based on determining that the gaze direction is included in the second range (630) and the third range (610) and not included in the first range (620).

[0092] According to one embodiment, the processor (320) may acquire a first depth map facing the gaze direction through at least one identified camera. For example, the first depth map may represent an image including distance information between the wearable electronic device (301) and an external object corresponding to the gaze direction.

[0093] According to one embodiment, the processor (320) may identify a first region among a plurality of regions included in the first depth map, wherein the depth value is not determined. For example, if the processor (320) determines that the depth value of the first region among the plurality of regions included in the first depth map is a designated value (e.g., a value lower than or equal to a threshold value), the processor (320) may identify the first region as a region where the depth value is not determined. For example, the designated value may represent a depth value that allows the third camera (370) to acquire an image in the direction of the gaze. For example, the designated value may represent 0. For example, the designated value may be automatically set by the processor (320) or may be set by a user.

[0094] According to one embodiment, the processor (320) can acquire an image of the gaze direction through the third camera (370) based on identifying a first region among a plurality of regions included in the first depth map in which a depth value is not identified.

[0095] According to one embodiment, the processor (320) may compare the image acquired through the first depth map and the third camera (370). According to one embodiment, the processor (320) may identify the color of the first region based on the comparison between the first depth map and the image acquired through the third camera (370). For example, the processor (320) may identify the color of an area corresponding to the first region included in the first depth map among a plurality of areas included in the image. For example, the designated color may represent black. Through this, the processor (320) may identify, based on the comparison between the first depth map and the image, whether the reason the depth value of the first region is not identified is because the distance between the object included in the first region and the wearable electronic device (301) is greater than the designated distance or because the color corresponding to the first region is a designated color (e.g., black).

[0096] According to one embodiment, if the processor (320) determines that the color of the first region is not a designated color, the processor (320) may determine the first depth map as a depth map for the direction of the user's gaze of the wearable electronic device (301). According to one embodiment, if the processor (320) determines that the color of the first region is not a designated color, the processor (320) may determine that the reason the depth value of the first region is not determined is because the distance between the object included in the first region and the wearable electronic device (301) is greater than the designated distance.

[0097] According to one embodiment, the processor (320) may determine that the depth value of a region is not confirmed based on identifying a region containing noise among a plurality of regions included in the first depth map.

[0098] According to one embodiment, the processor (320) may increase at least one of the output time or the output intensity of light output from at least one of the first depth camera (330) or the second depth camera (340) by a specified amount based on identifying an area containing noise among a plurality of areas included in the first depth map.

[0099] According to one embodiment, the processor (320) may determine whether the area of ​​the first region, which represents an area where the depth value is not confirmed, is larger than a designated area. According to one embodiment, if the area of ​​the first region is determined to be larger than a designated area (e.g., 10x10 pixels), the processor (320) may compare the image acquired through the third camera (370) with the first depth map to determine the color of the first region. For example, the designated area may represent an area value for determining the color of the first region. For example, the designated area may be set by the user or automatically set by the processor (320). According to one embodiment, if the area of ​​the first region, which represents an area where the depth value is not confirmed, is determined to be not larger than the designated area, the processor (320) may determine the first depth map as a depth map for the direction of the user's gaze of the wearable electronic device (301).

[0100] In one embodiment, the processor (320) may increase at least one of an output time or an output intensity of light output from at least one of the first depth camera (330) or the second depth camera (340) by a specified amount based on determining that the color of the first region is a specified color (e.g., black). The specified amount may be automatically set by the processor (320) or set by the user.

[0101] According to an implementation, according to one embodiment, the processor (320) may determine whether a saturation value of the first region is less than a specified saturation value based on a comparison of the first depth map and the image. According to one embodiment, if it is determined that the saturation value of the first region is less than the specified saturation value, the processor (320) may increase at least one of an output time or an output intensity of light output from at least one of the first depth camera (330) or the second depth camera (340) by a specified amount. According to one embodiment, if it is determined that the saturation value of the first region is not less than the specified saturation value, the processor (320) may determine the first depth map as a depth map for a gaze direction of a user of the wearable electronic device (301).

[0102] According to one embodiment, the processor (320) may increase the output intensity of light output from the first depth camera (330) or the second depth camera (340) based on increasing the amount of power (magnitude of current) applied to the first depth camera (330) or the second depth camera (340). For example, when at least one camera that acquired the first depth map includes the first depth camera (330), the processor (320) may increase at least one of the output time or the output intensity of light output from the first depth camera (330) by a specified amount. For example, when at least one camera that acquired the first depth map includes the second depth camera (340), the processor (320) may increase at least one of the output time or the output intensity of light output from the second depth camera (340) by a specified amount. For example, if the wearable electronic device (301) includes at least one camera that acquired the first depth map, including a first depth camera (330) and a second depth camera (340), the wearable electronic device (301) may increase at least one of the output time or the output intensity of light output from at least one of the first depth camera (330) or the second depth camera (340) by a specified amount.

[0103] For example, the processor (320) may increase the amount of light reflected from an object photographed through the first depth camera (330) or the second depth camera (340) based on increasing the output time (exposure time of light) of light output from the first depth camera (330) or the second depth camera (340). For example, the processor (320) may increase the output time of light by 0.5 ms. For example, the processor (320) may increase the intensity of a current applied to the first depth camera (330) or the second depth camera (340) by 0.5 A (ampere). Through this, the processor (320) may increase the amount of light reflected from an object photographed through the first depth camera (330) or the second depth camera (340). The processor (320) can determine the depth value for the first area by increasing the amount of light reflected from an object captured through the first depth camera (330) or the second depth camera (340).

[0104] According to one embodiment, the processor (320) may obtain a second depth map for a gaze direction using at least one camera based on increasing at least one of an output time or an output intensity of light output from at least one of the first depth camera (330) or the second depth camera (340). According to one embodiment, a depth value of an area corresponding to a first area among a plurality of areas included in the second depth map may be identified. According to one embodiment, at least one camera that obtained the second depth map may represent at least one camera that obtained the first depth map.

[0105] According to one embodiment, the processor (320) may determine whether a depth value of an area corresponding to a first area among a plurality of areas included in the second depth map is smaller than a specified value. For example, the specified value may represent a reference value for determining whether to increase at least one of an output time or an output intensity of light output from at least one of the first depth camera (330) or the second depth camera (340).

[0106] According to one embodiment, if it is determined that the depth value of an area corresponding to a first area among a plurality of areas included in the second depth map is not less than a specified value, the processor (320) may determine the second depth map as a depth map for the direction of the user's gaze of the wearable electronic device (301).

[0107] According to one embodiment, if the processor (320) determines that the depth value of an area corresponding to a first area among a plurality of areas included in the second depth map is smaller than a specified value, the processor (320) may increase the output time or the output intensity of light output from at least one of the first depth camera (330) or the second depth camera (340) by a specified first size. For example, the specified first size may be the same as the specified size. For example, the specified first size may be smaller or larger than the specified size. The specified first size may be automatically set by the processor (320) or may be set by the user.

[0108] According to one embodiment, the processor (320) may obtain a third depth map for the gaze direction using at least one camera based on increasing the output time or the output intensity of light output from at least one of the first depth camera (330) or the second depth camera (340) by a specified first amount. According to one embodiment, the at least one camera may represent at least one camera that obtained the first depth map and the second depth map. According to one embodiment, the processor (320) may determine whether a depth value of an area corresponding to a first area among a plurality of areas included in the third depth map is smaller than a specified value. According to one embodiment, if it is determined that the depth value of an area corresponding to the first area among a plurality of areas included in the third depth map is not smaller than the specified value, the processor (320) may determine the third depth map as a depth map for the gaze direction of the user of the wearable electronic device (301). According to one embodiment, when the processor (320) determines that the depth value of an area corresponding to a first area among a plurality of areas included in the third depth map is smaller than a specified value, the processor (320) may increase at least one of an output time or an output intensity output from at least one of the first depth camera (330) or the second depth camera (340) by a specified first amount. Through this, the wearable electronic device (301) may gradually increase at least one of an output time or an output intensity output from at least one of the first depth camera (330) or the second depth camera (340) up to a specified maximum output time or maximum output intensity.

[0109] The operations of the wearable electronic device (301) described in the drawings below may be performed by the processor (320). However, for convenience of explanation, the operations performed by the processor (320) will be described as being performed by the wearable electronic device (301).

[0110] FIG. 4A is a flowchart illustrating an operation of a wearable electronic device according to one embodiment of the present invention to acquire a depth map.

[0111] Referring to FIG. 4A, according to one embodiment, a wearable electronic device (301) (e.g., the wearable electronic device (301) of FIG. 3) may perform an operation of acquiring (or generating) a depth map. For example, the wearable electronic device (301) may acquire (or generate) a depth map when it is determined that a user is wearing the wearable electronic device (301), when the wearable electronic device (301) is operated, and / or when a specific application (or service) is executed. For example, the wearable electronic device (301) may acquire or update a depth map when the wearable electronic device (301) is operated, periodically, or as needed (e.g., when executing a specific application or providing a specific service).

[0112] According to one embodiment, in operation 411, a wearable electronic device (301) (e.g., the wearable electronic device (301) of FIG. 3) may determine a user's gaze direction through a gaze tracking camera (350) (e.g., the gaze tracking camera (350) of FIG. 3). According to one embodiment, the gaze tracking camera (350) may include a camera configured to track the user's gaze.

[0113] According to one embodiment, the wearable electronic device (301) can output a plurality of invisible lights to the user's eyes through a plurality of light-emitting elements. According to one embodiment, the plurality of light-emitting elements can output light in the infrared (IR) band. According to one embodiment, the plurality of light-emitting elements can be included in the gaze tracking camera (350) or arranged in the housing of the wearable electronic device (301).

[0114] According to one embodiment, the wearable electronic device (301) can acquire an image of the user's eyes through the gaze tracking camera (350). According to one embodiment, the wearable electronic device (301) can identify a plurality of points formed in the user's eyes from the image. According to one embodiment, the wearable electronic device (301) can identify the user's gaze direction based on the plurality of points formed in the user's eyes.

[0115] According to one embodiment, in operation 413, the wearable electronic device (301) can identify at least one camera having an angle of view capable of capturing an area corresponding to the gaze direction among the first depth camera (330) (e.g., the first depth camera (330) of FIG. 3), the second depth camera (340) (e.g., the second depth camera (340) of FIG. 3), or the third camera (370) (e.g., the third camera (370) of FIG. 3).

[0116] According to one embodiment, the wearable electronic device (301) can identify at least one range including the user's gaze direction among a first range corresponding to a first angle of view of a first depth camera (330), a second range corresponding to a second angle of view of a second depth camera (340), and a third range corresponding to a third angle of view of a third camera (370). According to one embodiment, the wearable electronic device (301) can identify at least one camera corresponding to at least one range. For example, portions of the first range, the second range, and / or the third range may overlap with each other.

[0117] According to one embodiment, the wearable electronic device (301) may turn on only at least one camera corresponding to at least one range including the user's gaze direction among the first depth camera (330), the second depth camera (340), and the third camera (370), and turn off the remaining cameras excluding the at least one camera among the first depth camera (330), the second depth camera (340), and the third camera (370). According to one embodiment, the wearable electronic device (301) may obtain a depth value using at least one camera. Through this, the wearable electronic device (301) may reduce the current consumption of the wearable electronic device (301) by turning on only the camera corresponding to the range including the user's gaze direction.

[0118] According to one embodiment, the first depth camera (330) may include a direct time of flight (dToF) camera, and the second depth camera (340) may include an indirect time of flight (iToF) camera. According to one embodiment, the third camera (370) may be implemented as an RGB camera. According to one embodiment, the third camera (370) may also be implemented as a mono camera. For example, the third angle of view of the third camera (370) may be larger than the first angle of view of the first depth camera (330) and the second angle of view of the second depth camera (340), and the second angle of view of the second depth camera (340) may be larger than the first angle of view of the first depth camera (330). For example, the third angle of view may be approximately 126 degrees, the first angle of view may be approximately 85 degrees, and the second angle of view may be approximately 100 degrees.

[0119] According to one embodiment, in operation 415, the wearable electronic device (301) may acquire a first depth map facing a gaze direction using at least one camera. For example, the first depth map may represent an image including distance information between the wearable electronic device (301) and an external object corresponding to the gaze direction.

[0120] According to one embodiment, in operation 417, the wearable electronic device (301) may acquire an image of the gaze direction through the third camera (370) based on identifying a first region among a plurality of regions included in the first depth map in which a depth value is not identified.

[0121] For example, if the wearable electronic device (301) determines that the depth value of a first region among the plurality of regions included in the first depth map is a designated value (e.g., a value lower than or equal to a threshold value), the wearable electronic device (301) may determine the first region as a region in which the depth value is not determined. For example, the designated value may represent a depth value that allows the third camera (370) to acquire an image in the direction of the gaze. For example, the designated value may represent 0. For example, the designated value may be automatically set by the wearable electronic device (301) or may be set by the user.

[0122] For example, the wearable electronic device (301) may determine that the depth value of the region is not confirmed based on checking an region containing noise among the plurality of regions included in the first depth map. According to one embodiment, in operation 419, the wearable electronic device (301) may compare an image acquired through the third camera (370) with the first depth map to check the color of the first region. For example, the wearable electronic device (301) may check the color of the region corresponding to the first region included in the first depth map among the plurality of regions of the image.

[0123] According to one embodiment, the wearable electronic device (301) may determine whether the area of ​​the first region, which represents an area where the depth value is not determined, is larger than a designated area. According to one embodiment, if the area of ​​the first region is determined to be larger than a designated area (e.g., 10x10 pixels), the wearable electronic device (301) may compare the image acquired through the third camera (370) with the first depth map to determine the color of the first region. For example, the designated area may represent an area value for determining the color of the first region. For example, the designated area may be set by the user or automatically set by the wearable electronic device (301). According to one embodiment, if the area of ​​the first region, which represents an area where the depth value is not determined, is determined to be not larger than the designated area, the wearable electronic device (301) may determine the first depth map as a depth map for the direction of the user's gaze of the wearable electronic device (301).

[0124] According to one embodiment, in operation 421, the wearable electronic device (301) may determine whether the color of the first region is a designated color. For example, the designated color may represent black.

[0125] According to one embodiment, the wearable electronic device (301) may determine the first depth map as a depth map for the gaze direction of the user of the wearable electronic device (301) based on determining that the color of the first area is not a designated color (action 421-No).

[0126] According to one embodiment, the wearable electronic device (301) may increase at least one of an output time or an output intensity of light output from at least one of the first depth camera (330) or the second depth camera (340) based on determining that the color of the first region is a designated color (e.g., black) (operation 421-Yes), in operation 423. For example, the wearable electronic device (301) may increase the output intensity of light output from the first depth camera (330) or the second depth camera (340) based on increasing the amount of power (magnitude of current) applied to the first depth camera (330) or the second depth camera (340). For example, the wearable electronic device (301) may increase the amount of light reflected from an object captured through the first depth camera (330) or the second depth camera (340) based on increasing the output time (exposure time of light) of light output from the first depth camera (330) or the second depth camera (340). For example, the wearable electronic device (301) may increase at least one of the output time or the output intensity of light output from at least one of the first depth camera (330) or the second depth camera (340) by a specified first amount. For example, the output time of light may be increased by 0.5 ms. The output time of light may vary depending on the driving frequency of the first depth camera (330) or the second depth camera (340). For example, the light output intensity can be increased based on increasing the intensity of the current applied to the first depth camera (330) or the second depth camera (340) by 0.5 A.

[0127] For example, the wearable electronic device (301) can stepwise increase at least one of the output time or the output intensity of light output from at least one of the first depth camera (330) or the second depth camera (340) to a specified maximum value.

[0128] According to one embodiment, in operation 425, the wearable electronic device (301) may acquire a second depth map for a gaze direction using at least one camera based on increasing at least one of an output time or an output intensity of light output from at least one of the first depth camera (330) or the second depth camera (340). According to one embodiment, the at least one camera may represent at least one camera that acquired the first depth map. According to one embodiment, a depth value of an area corresponding to a first area among a plurality of areas included in the second depth map may be identified.

[0129] According to the implementation, the wearable electronic device (301) may stop the operation of gradually increasing at least one of the output time or the output intensity of light output from at least one of the first depth camera (330) or the second depth camera (340) based on determining that a depth value of an area corresponding to a first area included in a second depth map acquired while gradually increasing at least one of the output time or the output intensity of light output from at least one of the first depth camera (330) or the second depth camera (340) is greater than a specified value.

[0130] According to an implementation, in one embodiment, the operation of determining the color of the first region based on comparing the first depth map with the image may be replaced with an operation of determining the saturation of the first region. In one embodiment, the wearable electronic device (301) may determine whether the saturation value of the first region is less than a specified saturation value based on comparing the first depth map with the image. For example, the specified saturation value may represent a value for determining whether to change at least one of an output time or an output intensity of light output from at least one of the first depth camera (330) or the second depth camera (340). For example, the specified saturation value may be set by a user or may be automatically set by the wearable electronic device (301). According to one embodiment, if the saturation of the first region is determined to be less than a specified saturation, the wearable electronic device (301) may increase at least one of the output time or the output intensity of light output from at least one of the first depth camera (330) or the second depth camera (340) by a specified amount. According to one embodiment, if the saturation of the first region is determined to be not less than the specified saturation, the wearable electronic device (301) may determine the first depth map as a depth map for a gaze direction of a user of the wearable electronic device (301).

[0131] FIG. 4b is a flowchart illustrating an operation of a wearable electronic device according to one embodiment of the present invention to provide a guide for moving a user's gaze direction.

[0132] Referring to FIG. 4B, according to one embodiment, in operation 431, a wearable electronic device (301) (e.g., the wearable electronic device (301) of FIG. 3) can determine a user's gaze direction through a gaze tracking camera (350) (e.g., the gaze tracking camera (350) of FIG. 3).

[0133] According to one embodiment, in operation 433, the wearable electronic device (301) may identify a third camera (370) among the first depth camera (330) (e.g., the first depth camera (330) of FIG. 3 ), the second depth camera (340) (e.g., the second depth camera (340) of FIG. 3 ), or the third camera (370) (e.g., the third camera (370) of FIG. 3 ) based on the gaze direction.

[0134] According to one embodiment, in operation 435, the wearable electronic device (301) may provide a guide to move the user's gaze direction. For example, the wearable electronic device (301) may display the guide through the display (360) (e.g., the display (360) of FIG. 3) or output the guide as a voice through the speaker of the wearable electronic device (301).

[0135] For example, the guide may represent a guide corresponding to the user's gaze direction for determining a camera for obtaining a depth map corresponding to the user's gaze direction as at least one of the first depth camera (330) or the second depth camera (340).

[0136] FIG. 5 is a flowchart illustrating an operation of a wearable electronic device according to one embodiment to check at least one camera among a first depth camera, a second depth camera, and a third camera.

[0137] Referring to FIG. 5, according to one embodiment, in operation 511, the wearable electronic device (301) (e.g., the wearable electronic device (301) of FIG. 3) may identify at least one area including an area pointed by a gaze direction (e.g., an area identified through a gaze tracking camera) among a first range corresponding to a first angle of view of a first depth camera (330) (e.g., the first depth camera (330) of FIG. 3), a second range corresponding to a second angle of view of a second depth camera (340) (e.g., the second depth camera (340) of FIG. 3), and a third range corresponding to a third angle of view of a third camera (370) (e.g., the third camera (370) of FIG. 3).

[0138] According to one embodiment, in operation 513, the wearable electronic device (301) may identify at least one camera corresponding to at least one range that includes the user's gaze direction among the first range, the second range, and the third range. For example, at least a portion of the first range, at least a portion of the second range, and / or at least a portion of the third range may overlap with each other. According to one embodiment, the operation of the wearable electronic device (301) identifying at least one camera corresponding to at least one range is specifically described in FIG. 6.

[0139] According to one embodiment, the wearable electronic device (301) may turn on only at least one camera corresponding to at least one of the first range, the second range, and / or the third range, and turn off the remaining cameras except for at least one camera among the first depth camera (330), the second depth camera (340), and the third camera (370). According to one embodiment, the wearable electronic device (301) may obtain a depth value using at least one camera. Through this, the wearable electronic device (301) may reduce the current consumption of the wearable electronic device (301) by turning on only the camera corresponding to the direction of the user's gaze.

[0140] FIG. 6A is a drawing for explaining the angles of view of the first depth camera, the second depth camera, and the third camera according to one embodiment.

[0141] Referring to (a) of FIG. 6A, according to one embodiment, a wearable electronic device (301) (e.g., the wearable electronic device (301) of FIG. 3) can identify a gaze direction of a user wearing the wearable electronic device (301) through a gaze tracking camera (350) (e.g., the gaze tracking camera (350) of FIG. 3).

[0142] According to one embodiment, the wearable electronic device (301) can identify at least one range including the user's gaze direction among a first range (620) corresponding to a first angle of view of a first depth camera (330) (e.g., the first depth camera (330) of FIG. 3), a second range (630) corresponding to a second angle of view of a second depth camera (340) (e.g., the second depth camera (340) of FIG. 3), and a third range (610) corresponding to a third angle of view of a third camera (370) (e.g., the third camera (370) of FIG. 3). For example, portions of the first range (620), the second range (630), and / or the third range (610) may overlap with each other.

[0143] According to one embodiment, the wearable electronic device (301) can identify at least one camera corresponding to at least one range including the user's gaze direction among the first depth camera (330), the second depth camera (340), and the third camera (370). According to one embodiment, the operation of identifying at least one camera corresponding to at least one range including the user's gaze direction is specifically described in FIGS. 6B to 6D .

[0144] FIG. 6B is a diagram for explaining an operation of a wearable electronic device according to one embodiment to identify at least one camera for obtaining a depth map as a first depth camera, a second depth camera, and a third camera.

[0145] Referring to FIG. 6B, according to one embodiment, when the wearable electronic device (301) (e.g., the wearable electronic device (301) of FIG. 3) determines that the user's gaze direction falls within a first range (620) (e.g., the first range (620) of FIG. 6A), a second range (630) (e.g., the second range (630) of FIG. 6A), and a third range (610) (e.g., the third range (610) of FIG. 6A), the wearable electronic device (301) may determine at least one camera as a first depth camera (330) (e.g., the first depth camera (330) of FIG. 3), a second depth camera (340) (e.g., the second depth camera (340) of FIG. 3), and a third camera (370) (e.g., the third camera (370) of FIG. 3). That is, when the wearable electronic device (301) confirms that the user's gaze is in a range (640) where the first range (620), the second range (630), and the third range (610) overlap with each other, the wearable electronic device (301) may determine at least one camera as the first depth camera (330), the second depth camera (340), and the third camera (370). According to one embodiment, the wearable electronic device (301) may obtain a first depth map for the gaze direction using the first depth camera (330), the second depth camera (340), and the third camera (370).

[0146] According to one embodiment, if the wearable electronic device (301) determines that the user's gaze direction is included in the first range (620) and the third range (610) and not included in the second range (630), the wearable electronic device (301) may determine at least one camera as the first depth camera (330), the second depth camera (340), and the third camera (370). That is, if the wearable electronic device (301) determines that the user's gaze is in a range (641) where the first range (620) and the third range (610) overlap each other among the first range (620) and where the first range (620) and the second range (630) do not overlap each other, the wearable electronic device (301) may determine at least one camera as the first depth camera (330), the second depth camera (340), and the third camera (370). According to one embodiment, the wearable electronic device (301) can obtain a first depth map for a gaze direction using a first depth camera (330), a second depth camera (340), and a third camera (370).

[0147] According to one embodiment, if the wearable electronic device (301) determines that the user's gaze direction is included in the first range (620) and the third range (610) and not included in the second range (630), the wearable electronic device (301) may determine at least one camera as the first depth camera (330) and the third camera (370). That is, if the wearable electronic device (301) determines that the user's gaze is in a range (641) in which the first range (620) and the third range (610) overlap each other and the first range (620) and the second range (630) do not overlap each other, the wearable electronic device (301) may determine at least one camera as the first depth camera (330) and the third camera (370). According to one embodiment, the wearable electronic device (301) may obtain a first depth map for the gaze direction by using the first depth camera (330) and the third camera (370).

[0148] FIG. 6C is a diagram illustrating an operation of a wearable electronic device according to one embodiment to identify at least one camera for obtaining a depth map as a second depth camera and a third camera.

[0149] Referring to FIG. 6C , according to one embodiment, the wearable electronic device (301) (e.g., the wearable electronic device (301) of FIG. 3 ) may determine at least one camera as a second depth camera (340) (e.g., the second depth camera (340) of FIG. 3 ) and a third camera (370) (e.g., the third camera (370) of FIG. 3 )) when it is determined that the user's gaze is included in a second range (630) (e.g., the second range (630) of FIG. 6A ) and a third range (610) (e.g., the third range (610) of FIG. 6A ) and not included in a first range (620) (e.g., the first range (620) of FIG. 6A ). That is, the wearable electronic device (301) may determine at least one camera as the second depth camera (340) and the third camera (370) when the user's gaze is confirmed to be in a range (650) where the second range (630) and the third range (610) overlap each other and the first range (620) and the second range (630) do not overlap each other. According to one embodiment, the wearable electronic device (301) may obtain a first depth map for the gaze direction using the second depth camera (340) and the third camera (370).

[0150] FIG. 6D is a diagram illustrating an operation of a wearable electronic device according to one embodiment of the present invention to identify at least one camera for obtaining a depth map as a third camera.

[0151] Referring to FIG. 6D , according to one embodiment, the wearable electronic device (301) (e.g., the wearable electronic device (301) of FIG. 3 ) may determine at least one camera as a third camera (370) (e.g., the third camera (370) of FIG. 3 ) when it is determined that the user's gaze is included in a third range (610) (e.g., the third range (610) of FIG. 6A ) and not included in a second range (630) (e.g., the second range (630) of FIG. 6A ) and a first range (620) (e.g., the first range (620) of FIG. 6A ). That is, the wearable electronic device (301) may determine at least one camera as the third camera (370) when the user's gaze is confirmed to be in a range (660) where the first range (620), the second range (630), and the third range (610) among the third ranges (610) do not overlap with each other. According to one embodiment, the wearable electronic device (301) may obtain a first depth map for the gaze direction using the third camera (370).

[0152] FIG. 7 is a flowchart illustrating an operation of a wearable electronic device according to one embodiment of the present invention to increase at least one of an output time or an output intensity of light output from at least one of a first depth camera or a second depth camera.

[0153] According to one embodiment, FIG. 7 is a diagram showing a flowchart after operations 411, 413, 415, 417, 419, 423, and 425 of FIG. 4a.

[0154] Referring to FIG. 7, according to one embodiment, a wearable electronic device (301) (e.g., the wearable electronic device (301) of FIG. 3) may obtain a second depth map for a gaze direction using at least one camera among a first depth camera (330) (e.g., the first depth camera (330) of FIG. 3) or a second depth camera (340) (e.g., the second depth camera (340) of FIG. 3). For example, the at least one camera may represent at least one camera that obtained the first depth map.

[0155] According to one embodiment, in operation 715, the wearable electronic device (301) can determine whether a depth value of an area corresponding to a first area among a plurality of areas included in the second depth map is less than a specified value.

[0156] According to one embodiment, if it is determined that the depth value of an area corresponding to a first area among the plurality of areas included in the second depth map is not less than a specified value (operation 715-No), the wearable electronic device (301) may determine the second depth map as a depth map for a gaze direction of the user of the wearable electronic device (301). According to one embodiment, if it is determined that the depth value of an area corresponding to the first area among the plurality of areas included in the second depth map is less than a specified value (operation 715-Yes), in operation 717, the wearable electronic device (301) may increase at least one of an output time or an output intensity output from at least one of the first depth camera (330) or the second depth camera (340) by a specified first size. For example, the specified first size may be the same as the specified size. For example, the specified first size may be larger or smaller than the specified size. For example, the specified first size may be automatically set by the wearable electronic device (301) or may be set by the user.

[0157] According to one embodiment, in operation 719, the wearable electronic device (301) may acquire a third depth map for the gaze direction using at least one camera based on increasing at least one of an output time or an output intensity output from at least one of the first depth camera (330) or the second depth camera (340) by a specified first amount. For example, the at least one camera may represent at least one camera that acquired the first depth map and the second depth map.

[0158] According to one embodiment, the wearable electronic device (301) may determine whether the depth value of an area corresponding to a first area among a plurality of areas included in the third depth map is less than a specified value. According to one embodiment, if it is determined that the depth value of an area corresponding to the first area among a plurality of areas included in the third depth map is not less than a specified value, the wearable electronic device (301) may determine the third depth map as a depth map for a gaze direction of a user of the wearable electronic device. According to one embodiment, if it is determined that the depth value of an area corresponding to the first area among a plurality of areas included in the third depth map is less than a specified value, the wearable electronic device (301) may increase at least one of an output time or an output intensity output from at least one of the first depth camera (330) or the second depth camera (340) by a specified first size. Through this, the wearable electronic device (301) can gradually increase at least one of the output time or output intensity output from at least one of the first depth camera (330) or the second depth camera (340) up to a specified maximum output time or maximum output intensity.

[0159] FIG. 8 is a diagram illustrating a first depth map acquired by a wearable electronic device using at least one camera according to one embodiment.

[0160] Referring to FIG. 8, according to one embodiment, a wearable electronic device (301) (e.g., the wearable electronic device (301) of FIG. 3) may obtain a first depth map (801) by using at least one camera having an angle of view capable of capturing an area corresponding to a gaze direction among a first depth camera (330) (e.g., the first depth camera (330) of FIG. 3), a second depth camera (340) (e.g., the second depth camera (340) of FIG. 3), or a third camera (370) (e.g., the third camera (370) of FIG. 3).

[0161] According to one embodiment, the wearable electronic device (301) can identify an area (810, 820) in which a depth value is not identified among a plurality of areas included in the first depth map (801).

[0162] According to one embodiment, when a region (810, 820) having a depth value of a designated value (e.g., a value lower than or equal to a threshold value) among a plurality of regions included in the first depth map (801) is identified, the wearable electronic device (301) may identify the region (810, 820) as a region in which a depth value is not identified. For example, the designated value may represent 0. However, this is an example, and the designated value may be set by a user or by the wearable electronic device (301).

[0163] According to one embodiment, when a region (811) containing noise is identified among a plurality of regions included in the first depth map (801), the wearable electronic device (301) can identify the region (811) as a region in which a depth value is not identified.

[0164] FIG. 9 is a diagram showing an image acquired by a wearable electronic device using a third camera according to one embodiment.

[0165] Referring to FIG. 9, according to one embodiment, a wearable electronic device (301) (e.g., the wearable electronic device (301) of FIG. 3) can obtain an image (901) for a gaze direction through a third camera (370) (e.g., the third camera (370) of FIG. 3).

[0166] According to one embodiment, the wearable electronic device (301) can identify the color of an area (910, 920) corresponding to an area (810, 820) whose depth value is not identified among the plurality of areas included in the first depth map (801) (e.g., the first depth map (801) of FIG. 8) among the plurality of areas included in the image (901).

[0167] In one embodiment, the wearable electronic device (301) can determine that the color of the area (910, 920) is a specified color (e.g., black).

[0168] According to one embodiment, the wearable electronic device (301) may increase the intensity of light or the output time of light output from at least one of the first depth camera (330) (e.g., the first depth camera (330) of FIG. 3) or the second depth camera (340) (e.g., the second depth camera (340) of FIG. 3) to increase the amount of light of a pixel corresponding to the area (910, 920) based on determining that the color of the area (910, 920) is a specified color (e.g., black).

[0169] According to one embodiment, the wearable electronic device (301) may increase the intensity of light or the output time of light output from at least one of the first depth camera (330) or the second depth camera (340) to remove noise in an area (911) containing noise included in the first depth map (801) (e.g., the area (911) containing noise in FIG. 9).

[0170] FIG. 10 is a diagram illustrating a second depth map acquired by a wearable electronic device using at least one camera according to one embodiment.

[0171] Referring to FIG. 10, according to one embodiment, a wearable electronic device (301) (e.g., the wearable electronic device (301) of FIG. 3) may acquire a second depth map (1001) using at least one camera based on increasing the intensity of light output or the output time of light from at least one of a first depth camera (330) (e.g., the first depth camera (330) of FIG. 3) or a second depth camera (340) (e.g., the second depth camera (340) of FIG. 3). For example, the at least one camera may represent at least one camera used to acquire the first depth map from among the first depth camera (330) (e.g., the first depth camera (330) of FIG. 3), the second depth camera (340) (e.g., the second depth camera (340) of FIG. 3), or the third camera (370) (e.g., the third camera (370) of FIG. 3).

[0172] According to one embodiment, the second depth map (1001) may represent a depth map in which depth values ​​of areas (810, 820, 811) in which depth values ​​are not identified in the first depth map (801) (e.g., the first depth map (801) of FIG. 8) are identified.

[0173] According to one embodiment, a wearable electronic device (301) may include a housing, a first depth camera (330) disposed on a first surface of the housing and having a first angle of view, a second depth camera (340) disposed on the first surface of the housing and having a second angle of view, a third camera (370) disposed on the first surface of the housing and having a third angle of view, a gaze tracking camera (350) disposed on the second surface of the housing and configured to track a user's gaze, at least one processor (320), and a memory (310) storing instructions.

[0174] According to one embodiment, the instructions, when executed by the at least one processor (320), may cause the wearable electronic device (301) to determine a gaze direction of a user wearing the wearable electronic device using the gaze tracking camera.

[0175] According to one embodiment, the instructions, when executed by the at least one processor (320), may cause the wearable electronic device (301) to identify, based on the gaze direction, at least one camera among the first depth camera (330), the second depth camera (340), or the third camera (370) having a field of view capable of capturing an area corresponding to the gaze direction.

[0176] According to one embodiment, the instructions, when executed by the at least one processor (320), may cause the wearable electronic device (301) to obtain a first depth map facing the gaze direction using the at least one camera identified based on the gaze direction.

[0177] According to one embodiment, the instructions, when executed by the at least one processor (320), may cause the wearable electronic device (301) to acquire a first image facing the gaze direction using the third camera based on identifying a first area in which a depth value included in the first depth map is not identified.

[0178] According to one embodiment, the instructions, when executed by the at least one processor (320), may cause the wearable electronic device (301) to determine a color of a portion of the first image corresponding to the first area included in the first depth map based on comparing the first image with the first depth map.

[0179] According to one embodiment, the instructions, when executed by the at least one processor (320), may cause the wearable electronic device (301) to adjust light output from at least one of the first depth camera or the second depth camera based on determining that the color of the portion of the first image acquired using the third camera is a designated color.

[0180] According to one embodiment, the instructions, when executed by the at least one processor (320), may cause the wearable electronic device (301) to obtain a second depth map facing the gaze direction using the at least one camera based on the adjusted light output from at least one of the first depth camera or the second depth camera.

[0181] According to one embodiment, the instructions, when executed by the at least one processor (320), may cause the wearable electronic device (301) to increase at least one of an output time or an output intensity of the light output from at least one of the first depth camera or the second depth camera by a specified amount based on determining that the color of the portion of the first image acquired using the third camera is black.

[0182] In one embodiment, the third angle of view may be larger than the first angle of view and the second angle of view, and the second angle of view may be larger than the first angle of view.

[0183] According to one embodiment, the instructions, when executed by the at least one processor (320), may cause the wearable electronic device (301) to identify at least one range including the gaze direction among a first range corresponding to the first angle of view, a second range corresponding to the second angle of view, and a third range corresponding to the third angle of view.

[0184] According to one embodiment, the instructions, when executed by the at least one processor (320), may cause the wearable electronic device (301) to identify the at least one camera corresponding to the at least one range including the gaze direction among the first depth camera, the second depth camera, or the third camera.

[0185] According to one embodiment, the instructions, when executed by the at least one processor (320), may cause the wearable electronic device (301) to acquire the first depth map using the first depth camera, the second depth camera, and the third camera based on determining that the gaze direction is included in the first range, the second range, and the third range.

[0186] According to one embodiment, the instructions, when executed by the at least one processor (320), may cause the wearable electronic device (301) to acquire the first depth map using the second depth camera and the third camera based on determining that the gaze direction is included in the second range and the third range.

[0187] According to one embodiment, the instructions, when executed by the at least one processor (320), may cause the wearable electronic device (301) to acquire the first depth map using the first depth camera and the third camera based on determining that the gaze direction is included in the first range and the third range.

[0188] According to one embodiment, the instructions, when executed by the at least one processor (320), may cause the wearable electronic device (301) to acquire the first depth map using the third camera based on determining that the gaze direction is included in the third range.

[0189] According to one embodiment, the instructions, when executed by the at least one processor (320), may cause the wearable electronic device (301) to increase at least one of the output time or the output intensity of the light output from at least one of the first depth camera or the second depth camera by a specified first amount based on determining that a depth value of an area corresponding to the first area included in the first depth map, included in the second depth map, is less than a specified value.

[0190] According to one embodiment, the instructions, when executed by the at least one processor (320), may cause the wearable electronic device (301) to acquire a third depth map facing the gaze direction using the at least one camera based on increasing at least one of the output time of the light output from at least one of the first depth camera or the second depth camera by the designated first amount or the output intensity of the light.

[0191] According to one embodiment, the first depth camera (330) may include a dToF (direct time of flight) camera, the second depth camera (340) may include an iToF (indirect time of flight) camera, and the gaze tracking camera may include an IR (infrared) camera.

[0192] According to one embodiment, a method of operating a wearable electronic device (301) may include an operation of checking a gaze direction of a user wearing the wearable electronic device using a gaze tracking camera (350) of the wearable electronic device.

[0193] According to one embodiment, a method of operating a wearable electronic device (301) may include an operation of identifying at least one camera having an angle of view capable of capturing an area corresponding to the gaze direction among a first depth camera (330) of the wearable electronic device, a second depth camera (340) of the wearable electronic device, or a third camera (370) of the wearable electronic device, based on the gaze direction.

[0194] According to one embodiment, a method of operating a wearable electronic device (301) may include an operation of obtaining a first depth map facing the gaze direction using the at least one camera identified based on the gaze direction.

[0195] According to one embodiment, the operating method of the wearable electronic device (301) may include an operation of obtaining a first image facing the gaze direction using the third camera based on identifying a first area in which a depth value included in the first depth map is not identified.

[0196] According to one embodiment, a method of operating a wearable electronic device (301) may include an operation of determining a color of a portion of the first image corresponding to the first area included in the first depth map based on comparing the first image with the first depth map.

[0197] According to one embodiment, a method of operating a wearable electronic device (301) may include an operation of increasing at least one of an output time or an output intensity of light output from at least one of the first depth camera or the second depth camera, based on determining that the color of the first area is a specified color.

[0198] According to one embodiment, a method of operating a wearable electronic device (301) may include adjusting light output from at least one of the first depth camera or the second depth camera based on determining that the color of the portion of the first image acquired using the third camera is a specified color.

[0199] According to one embodiment, a method of operating a wearable electronic device (301) may include an operation of obtaining a second depth map facing the gaze direction using at least one camera based on the adjusted light output from at least one of the first depth camera or the second depth camera.

[0200] According to one embodiment, the operating method of the wearable electronic device (301) may include an operation of increasing at least one of an output time or an output intensity of the light output from at least one of the first depth camera or the second depth camera by a specified amount based on determining that the color of the portion of the first image acquired using the third camera is black.

[0201] According to one embodiment, the method of operating the wearable electronic device (301) may include an operation of identifying at least one range including the gaze direction among a first range corresponding to the first angle of view, a second range corresponding to the second angle of view, and a third range corresponding to the third angle of view.

[0202] According to one embodiment, a method of operating a wearable electronic device (301) may include an operation of identifying at least one camera corresponding to at least one range including the gaze direction among the first depth camera, the second depth camera, or the third camera.

[0203] According to one embodiment, a method of operating a wearable electronic device (301) may include an operation of obtaining the first depth map using the first depth camera, the second depth camera, and the third camera based on determining that the gaze direction is included in the first range, the second range, and the third range.

[0204] According to one embodiment, a method of operating a wearable electronic device (301) may include an operation of obtaining the first depth map using the second depth camera and the third camera based on determining that the gaze direction is included in the second range and the third range.

[0205] According to one embodiment, a method of operating a wearable electronic device (301) may include an operation of obtaining the first depth map using the first depth camera and the third camera based on determining that the gaze direction is included in the first range and the third range.

[0206] According to one embodiment, the method of operating the wearable electronic device (301) may include an operation of obtaining the first depth map using the third camera based on determining that the gaze direction is included in the third range.

[0207] According to one embodiment, the operating method of the wearable electronic device (301) may include an operation of increasing at least one of the output time or the output intensity of the light output from at least one of the first depth camera or the second depth camera by a specified first size based on determining that a depth value of an area corresponding to the first area included in the first depth map, included in the second depth map, is smaller than a specified value.

[0208] According to one embodiment, a method of operating a wearable electronic device (301) may include an operation of obtaining a third depth map facing the gaze direction using the at least one camera based on increasing at least one of the output time of the light output from at least one of the first depth camera or the second depth camera by the specified first amount or the output intensity of the light.

[0209] According to one embodiment, the method of operating the wearable electronic device (301) may include an operation of obtaining a third depth map for the gaze direction based on increasing at least one of the output time or the output intensity by the specified first amount.

[0210] According to one embodiment, a non-transitory recording medium may store instructions that can execute an operation of determining a gaze direction of a user wearing the wearable electronic device using a gaze tracking camera (350) of the wearable electronic device.

[0211] According to one embodiment, the non-transitory recording medium may store instructions that can execute an operation of identifying at least one camera having an angle of view that can capture an area corresponding to the gaze direction among the first depth camera (330) of the wearable electronic device, the second depth camera (340) of the wearable electronic device, or the third camera (370) of the wearable electronic device, based on the gaze direction.

[0212] According to one embodiment, the non-transitory recording medium may store instructions that can execute an operation of obtaining a first depth map facing the gaze direction using the at least one camera identified based on the gaze direction.

[0213] According to one embodiment, the non-transitory recording medium may store instructions that can execute an operation of acquiring a first image facing the viewing direction using the third camera based on identifying a first area in which a depth value included in the first depth map is not identified.

[0214] According to one embodiment, the non-transitory recording medium can store instructions that can perform an operation of determining a color of a portion of the first image corresponding to the first area included in the first depth map based on comparing the first image with the first depth map.

[0215] According to one embodiment, the non-transitory recording medium may store instructions that can execute an operation of adjusting light output from at least one of the first depth camera or the second depth camera based on determining that the color of the portion of the first image acquired using the third camera is a specified color.

[0216] According to one embodiment, the non-transitory recording medium can store instructions that can execute an operation of obtaining a second depth map facing the viewing direction using at least one camera based on the adjusted light output from at least one of the first depth camera or the second depth camera.

[0217] Electronic devices according to the various embodiments disclosed in this document may take various forms. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to the embodiments of this document are not limited to the aforementioned devices.

[0218] The various embodiments of this document and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, each of the phrases "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" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0219] The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0220] Various embodiments of the present document may be implemented as software (e.g., program (140)) including one or more commands stored in a storage medium (e.g., built-in memory (136) or external memory (138)) readable by a machine (e.g., electronic device (101, 200, 301)). For example, a processor (e.g., processor (120, 320)) of a machine (e.g., electronic device (101, 200, 301)) may call at least one command among the one or more commands stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the called at least one command. The one or more commands may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' means that the storage medium is It simply means that the device is tangible and does not contain signals (e.g. electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on a storage medium.

[0221] According to one embodiment, the method according to various embodiments disclosed in the present document may be provided as included in a computer program product. The computer program product may be traded as a commodity between a seller and a buyer. 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 may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store™) or directly between two user devices (e.g., smart phones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0222] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to various embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to various embodiments, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

Claims

1. In a wearable electronic device (301), housing; A first depth camera (330) disposed on a first surface of the housing and having a first angle of view; A second depth camera (340) disposed on the first surface of the housing and having a second angle of view; A third camera (370) disposed on the first surface of the housing and having a third angle of view; A gaze tracking camera (350) arranged on the second side of the housing and set to track the user's gaze; At least one processor (320); and Includes a memory (310) for storing instructions, The instructions, when individually or collectively executed by the at least one processor, cause the wearable electronic device to: Using the above gaze tracking camera, the gaze direction of the user wearing the wearable electronic device is confirmed, Based on the above gaze direction, at least one camera among the first depth camera, the second depth camera, or the third camera having an angle of view capable of capturing an area corresponding to the gaze direction is identified, Obtaining a first depth map facing the gaze direction using at least one camera identified based on the gaze direction, Based on identifying a first area where a depth value included in the first depth map is not confirmed, a first image facing the gaze direction is acquired using the third camera, Based on comparing the first image and the first depth map, the color of a portion of the first image corresponding to the first area included in the first depth map is determined, Adjusting light output from at least one of the first depth camera or the second depth camera based on determining that the color of the portion of the first image acquired using the third camera is a specified color; A wearable electronic device that causes a second depth map facing the gaze direction to be acquired using the at least one camera based on the adjusted light output from at least one of the first depth camera or the second depth camera.

2. In paragraph 1, The instructions, when individually or collectively executed by the at least one processor, cause the wearable electronic device to: A wearable electronic device that causes at least one of the output time or output intensity of the light output from at least one of the first depth camera or the second depth camera to increase by a specified amount based on determining that the color of the portion of the first image acquired using the third camera is black.

3. In any one of paragraphs 1 and 2, The instructions, when individually or collectively executed by the at least one processor, cause the wearable electronic device to: At least one range including the line of sight direction is identified among a first range corresponding to the first angle of view, a second range corresponding to the second angle of view, and a third range corresponding to the third angle of view. A wearable electronic device that causes the user to identify at least one camera corresponding to at least one range including the gaze direction among the first depth camera, the second depth camera, or the third camera.

4. In any one of paragraphs 1 to 3, The instructions, when individually or collectively executed by the at least one processor, cause the wearable electronic device to: A wearable electronic device that causes the first depth map to be acquired using the first depth camera, the second depth camera, and the third camera based on determining that the gaze direction is included in the first range, the second range, and the third range.

5. In any one of paragraphs 1 to 4, The instructions, when individually or collectively executed by the at least one processor, cause the wearable electronic device to: A wearable electronic device that causes the first depth map to be acquired using the second depth camera and the third camera based on determining that the gaze direction is included in the second range and the third range.

6. In any one of paragraphs 1 to 5, The instructions, when individually or collectively executed by the at least one processor, cause the wearable electronic device to: A wearable electronic device that causes the first depth map to be acquired using the first depth camera and the third camera based on determining that the gaze direction is included in the first range and the third range.

7. In any one of paragraphs 1 to 6, The instructions, when individually or collectively executed by the at least one processor, cause the wearable electronic device to: A wearable electronic device that causes the third camera to acquire the first depth map based on determining that the gaze direction is included in the third range.

8. In any one of paragraphs 1 to 7, The instructions, when individually or collectively executed by the at least one processor, cause the wearable electronic device to: Based on determining that the depth value of the area corresponding to the first area included in the first depth map, included in the second depth map, is smaller than a specified value, increasing at least one of the output time or the output intensity of the light output from at least one of the first depth camera or the second depth camera by a specified first size, Causing to acquire a third depth map facing the viewing direction using the at least one camera based on increasing at least one of the output time of the light output from at least one of the first depth camera or the second depth camera by the specified first size, The third angle of view is larger than the first angle of view and the second angle of view, and the second angle of view is larger than the first angle of view. The first depth camera includes a dToF (direct time of flight) camera, The second depth camera includes an iToF (indirect time of flight) camera, The above gaze tracking camera is a wearable electronic device including an IR (infrared) camera.

9. In the operating method of a wearable electronic device (301), An operation of checking the gaze direction of a user wearing the wearable electronic device using the gaze tracking camera (350) of the wearable electronic device; An operation of identifying at least one camera having an angle of view capable of photographing an area corresponding to the gaze direction among the first depth camera (330) of the wearable electronic device, the second depth camera (340) of the wearable electronic device, or the third camera (370) of the wearable electronic device based on the gaze direction; An operation of obtaining a first depth map facing the gaze direction using at least one camera identified based on the gaze direction; An operation of acquiring a first image facing the gaze direction using the third camera based on identifying a first area in which a depth value included in the first depth map is not confirmed; An operation of determining a color of a portion of the first image corresponding to the first area included in the first depth map based on comparing the first image with the first depth map; An operation of adjusting light output from at least one of the first depth camera or the second depth camera based on determining that the color of the portion of the first image acquired using the third camera is a specified color; and A method of operating a wearable electronic device, comprising: obtaining a second depth map facing the gaze direction using at least one camera based on the adjusted light output from at least one of the first depth camera or the second depth camera.

10. In paragraph 11, A method of operating a wearable electronic device, further comprising an operation of increasing at least one of an output time or an output intensity of the light output from at least one of the first depth camera or the second depth camera by a specified amount based on determining that the color of the portion of the first image acquired using the third camera is black.

11. In paragraph 9 or 10, An operation of confirming at least one range including the line of sight direction among a first range corresponding to the first angle of view, a second range corresponding to the second angle of view, and a third range corresponding to the third angle of view; and A method of operating a wearable electronic device, further comprising an action of checking at least one camera corresponding to at least one range including the gaze direction among the first depth camera, the second depth camera, or the third camera.

12. In any one of paragraphs 9 to 11, A method of operating a wearable electronic device, further comprising: obtaining the first depth map using the first depth camera, the second depth camera, and the third camera based on determining that the gaze direction is included in the first range, the second range, and the third range.

13. In any one of paragraphs 9 to 12, An operation of obtaining the first depth map using the second depth camera and the third camera based on determining that the gaze direction is included in the second range and the third range; An operation of obtaining the first depth map using the first depth camera and the third camera based on determining that the gaze direction is included in the first range and the third range; and A method of operating a wearable electronic device, further comprising an operation of obtaining the first depth map using the third camera based on determining that the gaze direction is included in the third range.

14. In any one of paragraphs 9 to 13, An operation of increasing at least one of the output time or the output intensity of the light output from at least one of the first depth camera or the second depth camera by a specified first size based on determining that the depth value of the area corresponding to the first area included in the first depth map, included in the second depth map, is smaller than a specified value; and Further comprising an operation of obtaining a third depth map facing the viewing direction using the at least one camera based on increasing at least one of the output time of the light output from at least one of the first depth camera or the second depth camera by the specified first size, A method of operating a wearable electronic device, characterized in that the third angle of view is larger than the first angle of view and the second angle of view, and the second angle of view is larger than the first angle of view.

15. In non-transitory recording media, An action of checking the gaze direction of a user wearing the wearable electronic device using the gaze tracking camera (350) of the wearable electronic device; An operation of identifying at least one camera having an angle of view capable of photographing an area corresponding to the gaze direction among the first depth camera (330) of the wearable electronic device, the second depth camera (340) of the wearable electronic device, or the third camera (370) of the wearable electronic device based on the gaze direction; An operation of obtaining a first depth map facing the gaze direction using at least one camera identified based on the gaze direction; An operation of acquiring a first image facing the gaze direction using the third camera based on identifying a first area in which a depth value included in the first depth map is not confirmed; An operation of determining a color of a portion of the first image corresponding to the first area included in the first depth map based on comparing the first image with the first depth map; An operation of adjusting light output from at least one of the first depth camera or the second depth camera based on determining that the color of the portion of the first image acquired using the third camera is a specified color; and A non-transitory recording medium storing instructions that can execute an operation of obtaining a second depth map facing the viewing direction using at least one camera based on the adjusted light output from at least one of the first depth camera or the second depth camera.

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