发明名称 |
Method and system of local color correction using background liminance masking |
摘要 |
A color correction apparatus and method in which a mask is derived from image data in a first pixel representation and is used to convert the image data into a perceptual color space representation which is a function of a background luminance parameter. The mask corresponds to a blurred monochrome version of the original image and includes a set of averaged greyscale values having a pixel-by-pixel correspondence with the original image. The values within the mask vary dependent on the location of the corresponding pixel within the image data. When converting the image data pixel-by-pixel into the perceptual color space representation, localized color correction is obtained by using varying mask values as the background luminance parameter for each pixel conversion.
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申请公布号 |
US6741753(B1) |
申请公布日期 |
2004.05.25 |
申请号 |
US20000655193 |
申请日期 |
2000.09.05 |
申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
MORONEY NATHAN M. |
分类号 |
H04N1/60;(IPC1-7):G06K9/40 |
主分类号 |
H04N1/60 |
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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