发明授权
- 专利标题: Lens shading correction for autofocus and zoom lenses
- 专利标题(中): 自动对焦和变焦镜头的镜头阴影校正
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申请号: US12496687申请日: 2009-07-02
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公开(公告)号: US08223229B2公开(公告)日: 2012-07-17
- 发明人: Hugh Phu Nguyen
- 申请人: Hugh Phu Nguyen
- 申请人地址: US CA Santa Clara
- 专利权人: Nethra Imaging Inc
- 当前专利权人: Nethra Imaging Inc
- 当前专利权人地址: US CA Santa Clara
- 代理机构: Hahn Moodley LLP
- 代理商 Vani Moodley, Esq.
- 主分类号: H04N9/64
- IPC分类号: H04N9/64 ; H04N5/235 ; H04N5/217
摘要:
In one embodiment of the invention, there is provided a method of correcting a captured image for lens shading artifacts, the captured image being captured by an image capture system, the method comprising: determining a function L(x, y) being a lens shading correction function to be applied to images captured by a lens of the image capture system in order to correct for lens shading artifacts; if a focal length associated with the captured image is less than a focal length associated with, the function L(x, y) then cropping the function L(x, y) based on the focal length associated with the captured image; and scaling the cropped function L(x, y) to a size of the tin-cropped Junction L(x, y).
公开/授权文献
- US20110001854A1 LENS SHADING CORRECTION FOR AUTOFOCUS AND ZOOM LENSES 公开/授权日:2011-01-06
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