Image analysis – Applications
Reexamination Certificate
2005-10-18
2005-10-18
Johns, Andrew W. (Department: 2621)
Image analysis
Applications
C382S167000
Reexamination Certificate
active
06956958
ABSTRACT:
A method for enhancing color fidelity in multi-reproduction, includes scanning an image to be reproduced, wherein the image contains an invisible digital watermark including color information; decoding the color information contained in the watermark; comparing the decoded color information with the scanned image; generating a correction table from the differences between the decoded color information and the scanned image; and performing color correction on the scanned image using the correction table. This method confines the color error to one generation, even when copies go through multiple reproduction.
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Cheng Hui
Fan Zhigang
Wang Shen-ge
Alavi Amir
Johns Andrew W.
Walder Jeannette M
Xerox Corporation
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