发明名称 |
Method and apparatus for performing local color correction |
摘要 |
The invention is directed towards method and apparatus for performing local color correction. One embodiment of the invention is a two-part process. The first part derives an image mask from an input image. In some embodiments, the mask is an inverted, low-pass filtered, monochrome version of the input image. The second part combines the derived mask with the input image through a non-linear operation. In some embodiments, the combination operation is a variable exponential function that has the mask values as part of its exponent and the pixel values as part of its base.
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申请公布号 |
US6813041(B1) |
申请公布日期 |
2004.11.02 |
申请号 |
US20000540162 |
申请日期 |
2000.03.31 |
申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
MORONEY NATHAN;SOBEL IRWIN |
分类号 |
G06T1/00;G06T5/20;H04N1/46;H04N1/60;(IPC1-7):H04N1/60;G06F1/02;G06T5/00 |
主分类号 |
G06T1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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