- 专利标题: Methods and apparatus for using a controllable physical light filter as part of an image capture system and for processing captured images
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申请号: US16746872申请日: 2020-01-19
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公开(公告)号: US11537027B2公开(公告)日: 2022-12-27
- 发明人: Atul Maharshi , Pablo A Anigstein , Rajiv Laroia
- 申请人: Blue River Technology Inc.
- 申请人地址: US CA Sunnyvale
- 专利权人: Blue River Technology Inc.
- 当前专利权人: Blue River Technology Inc.
- 当前专利权人地址: US CA Sunnyvale
- 代理机构: Straub & Straub
- 代理商 Michael P. Straub; Stephen T. Straub
- 主分类号: H04N5/225
- IPC分类号: H04N5/225 ; G03B11/00 ; G06T1/20 ; G06T7/20 ; H04N5/232 ; H04N5/357
摘要:
Methods and apparatus for using a controllable filter, e.g., an liquid crystal panel, in front of a camera are described. The filter is controlled based on the luminosity of object in a scene being captured by the camera to reduce or eliminate luminosity related image defects such as flaring, blooming or ghosting. Multiple cameras and filters can be used to capture multiple images as part of a depth determination processes where pixel values captured by cameras at different locations are matched to determine the depth, e.g., distance from the camera or camera system to object in the environment. Pixel values are normalized in some embodiments based on the amount of filtering applied to a sensor region and sensor exposure time. The filtering allows for regional sensor exposure control at an individual camera even though the overall exposure time of the pixel sensors may be and often will be the same.
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