发明名称 |
Image processing device capable of suppressing over-correction in Retinex process |
摘要 |
A first lower-range generating portion generates a pixel value of an output image based on a first nonlinear function in a first lower range where a pixel value of a subject pixel is lower than a predetermine value. The first upper-range generating portion generates the pixel value of the output image based on a first monotonically increasing function in a first upper range where the pixel value of the subject pixel is greater than or equal to the predetermine value. The pixel value of the output image increases toward a first maximum output luminance value as the pixel value of the subject pixel increases. The first maximum output luminance value is greater than a luminance value obtained by correcting a maximum pixel value of the original image based on the first nonlinear function. The first maximum output luminance value is proximate to the maximum pixel value of the original image.
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申请公布号 |
US7876474(B2) |
申请公布日期 |
2011.01.25 |
申请号 |
US20070931697 |
申请日期 |
2007.10.31 |
申请人 |
BROTHER KOGYO KABUSHIKI KAISHA |
发明人 |
KONDO MASAKI |
分类号 |
G06F3/12 |
主分类号 |
G06F3/12 |
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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