# US 2020/0288108 A1 · Method, apparatus, terminal, capturing system and device for setting capturing devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0288108 A1 - Document ID: US20200288108A1 - Status: Published application - Kind: A1 - Application number: 16/810,362 - Filed: 2020-03-05 - Published: 2020-09-10 - Earliest claimed: 2019-03-07 - Assignees: Alibaba Group Holding Limited - Applicants: Alibaba Group Holding Limited - Inventors: Xiaojie Sheng - Web page: https://patentgrep.com/patent/US20200288108A1 ## CPC - G06T 15/205: {Image-based rendering} - G06F 3/04842: Selection of displayed objects or displayed text elements (G06F3/0482 takes precedence) - G06F 3/04883: for inputting data by handwriting, e.g. gesture or text - G06F 3/167: {Audio in a user interface, e.g. using voice commands for navigating, audio feedback} - G06T 3/4038: Image mosaicing, e.g. composing plane images from plane sub-images - G06T 15/04: Texture mapping - G06T 15/20: Perspective computation - G06V 20/40: in video content (extracting overlay text G06V20/62; video retrieval G06F16/70; processing of video elementary streams in video servers H04N21/234; processing of video elementary streams in video clients H04N21/44) - G06V 20/52: Surveillance or monitoring of activities, e.g. for recognising suspicious objects (recognising microscopic objects G06V20/69) - H04N 13/117: the virtual viewpoint locations being selected by the viewers or determined by viewer tracking - H04N 13/128: Adjusting depth or disparity - H04N 13/139: Format conversion, e.g. of frame-rate or size - H04N 13/156: Mixing image signals - H04N 13/167: Synchronising or controlling image signals - H04N 13/172: image signals comprising non-image signal components, e.g. headers or format information - H04N 13/189: Recording image signals; Reproducing recorded image signals - H04N 13/268: based on depth image-based rendering [DIBR] - H04N 13/279: the virtual viewpoint locations being selected by the viewers or determined by tracking - H04N 13/282: for generating image signals corresponding to three or more geometrical viewpoints, e.g. multi-view systems - H04N 13/293: Generating mixed stereoscopic images; Generating mixed monoscopic and stereoscopic images, e.g. a stereoscopic image overlay window on a monoscopic image background - H04N 13/296: Synchronisation thereof; Control thereof - H04N 13/349: Multi-view displays for displaying three or more geometrical viewpoints without viewer tracking (for viewing without the aid of special glasses using fly-eye lenses H04N13/307) - H04N 21/21805: {enabling multiple viewpoints, e.g. using a plurality of cameras} - H04N 21/816: {involving special video data, e.g 3D video} - H04N 23/60: Control of cameras or camera modules - H04N 23/90: Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums - G06F 2203/04806: Zoom, i.e. interaction techniques or interactors for controlling the zooming operation - G06T 2200/24: involving graphical user interfaces [GUIs] - G06T 2210/36: Level of detail - H04N 2013/0081: {Depth or disparity estimation from stereoscopic image signals} - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A method, an apparatus, a medium, a terminal, a capturing system, and a device for setting capturing devices are disclosed. The method includes: determining a multi-angle free-perspective range, where switching a viewpoint for viewing in a to-be-viewed area is supported within the multi-angle free-perspective range; and determining setting positions of capturing devices according to at least the multi-angle free-perspective range, where the setting positions are suitable for setting the capturing devices to perform data capturing in the to-be-viewed area. The technical solutions in the embodiments of the present disclosure can improve user experience. ## Claims ### Claim 1 A method comprising: determining a multi-angle free-perspective range, where switching a viewpoint for viewing in a to-be-viewed area is supported within the multi-angle free-perspective range; and determining setting positions of capturing devices according to at least the multi-angle free-perspective range, where the setting positions are suitable for setting the capturing devices to perform data capturing in the to-be-viewed area. ### Claim 2 (depends on 1) The method according to claim 1, wherein the setting positions are selected from boundary points of the multi-angle free-perspective range. ### Claim 3 (depends on 1) The method according to claim 1, wherein the setting positions are set for two or more capturing devices. ### Claim 4 (depends on 1) The method according to claim 1, wherein determining setting positions of the capturing devices according to at least the multi-angle free-perspective range comprises determining the setting positions of the capturing devices with reference to the perspective range and a boundary shape of the to-be-viewed area. ### Claim 5 (depends on 3) The method according to claim 3, wherein the setting positions of the capturing devices are determined at a preset interval along the boundary of the to-be-viewed area within the perspective range. ### Claim 6 (depends on 1) The method according to claim 1, wherein the to-be-viewed area comprises the core focus, and the multi-angle free-perspective range comprises the area where the perspective is directed to the core focus. ### Claim 7 (depends on 6) The method according to claim 6, wherein the setting positions of the capturing devices are selected from an arc-shaped area whose concave direction points to the core focus. ### Claim 8 (depends on 1) The method according to claim 1, wherein the multi-angle free-perspective range supports viewing the to-be-viewed area from the upper side of the to-be-viewed area, and the upper side is in a direction away from the horizontal plane. ### Claim 9 (depends on 8) The method according to claim 8, wherein drones located on the upper side of the to-be-viewed area are configured with the capturing device. ### Claim 10 (depends on 8) The method according to claim 8, wherein the capturing devices are set on the top of the building where the to-be-viewed area is located, the top of the building being a structure in the direction away from the horizontal plane. ### Claim 11 (depends on 1) The method according to claim 1, further comprising determining respective orientations of the capturing devices according to at least the multi-angle free-perspective range. ### Claim 12 (depends on 1) The method according to claim 1, wherein the capturing devices are cameras or video cameras. ### Claim 13 A system comprising: a plurality of capturing devices that are set at setting positions and used for performing data capturing on a to-be-viewed area, the setting positions being determined based on an angle free-perspective range, wherein viewpoint switching viewing in the to-be-viewed area is supported within a multi-angle free-perspective range. ### Claim 14 (depends on 13) The system according to claim 13, wherein the plurality of capturing devices perform data capturing on the to-be-viewed area synchronously. ### Claim 15 (depends on 14) The system according to claim 14, further comprising: a server adapted to perform processing on data captured synchronously by the plurality of capturing device to obtain data of multiple synchronized images, data of each image including pixel data and depth data associated with the pixel data. ### Claim 16 One or more computer-readable storage media storing computer instructions that, when executed by one or more processors, cause the one or more processors to perform acts comprising: determining a multi-angle free-perspective range, where switching a viewpoint for viewing in a to-be-viewed area is supported within the multi-angle free-perspective range; and determining setting positions of capturing devices according to at least the multi-angle free-perspective range, where the setting positions are suitable for setting the capturing devices to perform data capturing in the to-be-viewed area. ### Claim 17 (depends on 16) The one or more computer-readable storage media according to claim 16, wherein the setting positions are selected from boundary points of the multi-angle free-perspective range. ### Claim 18 (depends on 16) The one or more computer-readable storage media according to claim 16, wherein the to-be-viewed area comprises the core focus, and the multi-angle free-perspective range comprises the area where the perspective is directed to the core focus. ### Claim 19 (depends on 16) The one or more computer-readable storage media according to claim 16, wherein the multi-angle free-perspective range supports viewing the to-be-viewed area from the upper side of the to-be-viewed area, and the upper side is in a direction away from the horizontal plane. ### Claim 20 (depends on 16) The one or more computer-readable storage media according to claim 16, the acts further comprising determining respective orientations of the capturing devices according to at least the multi-angle free-perspective range.