发明授权
US08130292B2 Scene illumination adaptive lens shading correction for imaging devices
有权
用于成像装置的场景照明自适应透镜阴影校正
- 专利标题: Scene illumination adaptive lens shading correction for imaging devices
- 专利标题(中): 用于成像装置的场景照明自适应透镜阴影校正
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申请号: US12347515申请日: 2008-12-31
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公开(公告)号: US08130292B2公开(公告)日: 2012-03-06
- 发明人: Ji Soo Lee
- 申请人: Ji Soo Lee
- 申请人地址: KY George Town
- 专利权人: Aptina Imaging Corporation
- 当前专利权人: Aptina Imaging Corporation
- 当前专利权人地址: KY George Town
- 主分类号: H04N9/64
- IPC分类号: H04N9/64
摘要:
Methods, apparatuses, and systems for scene adaptive lens shading correction. One or more gain adjustment surfaces calibrated to a reference illuminant type is stored. At least one scene adjustment surface, which varies as a function of the illuminant type, is stored for each additional illuminant type for which lens shading correction is desired. Additionally, an imaging device with a color image sensor may define a gain adjustment surface and a scene adjustment surface for each of the color channels of the image sensor. Scene adaptive lens shading correction entails determining an illuminant type for a captured image, selecting a scene adjustment surface based on the determined illuminant type, and processing the image using a gain adjustment surface modified by the scene adjustment surface.
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