发明授权
- 专利标题: Color correction of a compressed image
- 专利标题(中): 压缩图像的颜色校正
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申请号: US306162申请日: 1999-05-06
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公开(公告)号: US6097838A公开(公告)日: 2000-08-01
- 发明人: R. Victor Klassen , Steven J. Harrington , Thyagarajan Balasubramanian , Ricardo L. de Queiroz
- 申请人: R. Victor Klassen , Steven J. Harrington , Thyagarajan Balasubramanian , Ricardo L. de Queiroz
- 申请人地址: CT Stamford
- 专利权人: Xerox Corporation
- 当前专利权人: Xerox Corporation
- 当前专利权人地址: CT Stamford
- 主分类号: H04N11/04
- IPC分类号: H04N11/04 ; H04N1/41 ; H04N1/46 ; H04N1/60 ; H04N7/30 ; G06K9/00 ; G03F3/08 ; G06K9/36 ; G06K9/38 ; G06K9/46
摘要:
The present invention is a method for the color correction of digital images that have been compressed. In a preferred embodiment, aspects of the color correction are carried out on the compressed image data to improve computational efficiency. One of a number of alternative methods is employed to accomplish the color correction on lossy or losslessly compressed images. The color transformation process accomplishes color correction on compressed image data in conjunction with compression or decompression operations. A second, simplified phase of the color correction may be applied subsequently to the decompressed image data in certain embodiments. Accordingly, the technique has application to any number of color imaging systems, including digital printers and copiers where there is a necessity to color correct compressed digital images
公开/授权文献
- US5562276A Locator and hold down system for a machine 公开/授权日:1996-10-08
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