- 专利标题: Adaptive shading correction
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申请号: US15265637申请日: 2016-09-14
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公开(公告)号: US10044952B2公开(公告)日: 2018-08-07
- 发明人: Viacheslav Chesnokov , Daniel Larkin , Varuna De Silva , Sutirtha Deb
- 申请人: Apical Ltd.
- 申请人地址: GB Cambridge
- 专利权人: APICAL LTD.
- 当前专利权人: APICAL LTD.
- 当前专利权人地址: GB Cambridge
- 代理机构: EIP US LLP
- 优先权: GB1516173.0 20150914
- 主分类号: H04N5/357
- IPC分类号: H04N5/357 ; H04N9/64 ; H04N9/77
摘要:
The present disclosure provides an adaptive shading correction method for correcting an image for lens shading, including segmenting the image into a plurality of blocks of pixels and identifying hue-flat blocks with a relatively low hue variance, where the hue-flat blocks are clustered into at least one cluster based on a spatial distribution of the blocks. Selected modification parameters for modifying an average shading mesh are identified by modifying the average shading mesh along a plurality of dimensions using a plurality of modification parameters, and processing the at least one cluster with the average shading mesh as modified so as to identify the selected modification parameters. The average shading mesh is modified using the selected modification parameters to generate a shading correction mesh, which is used to correct the image for lens shading.
公开/授权文献
- US20170078596A1 ADAPTIVE SHADING CORRECTION 公开/授权日:2017-03-16
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