Digital watermark inserting system and digital watermark characteristic parameter table generating method
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United States of America Patent
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Feb 24, 2004
Grant Date -
Aug 28, 2003
app pub date -
Mar 20, 2003
filing date -
Jan 13, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A digital watermark inserting system for inserting digital watermark information into an input image is disclosed, that comprises a categorizing portion 103 for calculating a feature amount of the input image, categorizing the input image to a category index, a digital watermark characteristic calculating portion 104 for calculating an image deteriorating ratio and a robustness evaluation value corresponding to a digital watermark strength based on a robustness evaluation value calculation parameter and the category index, a digital watermark strength calculating portion 100 for outputting the digital watermark strength to the portion 104, deciding the optimum digital watermark strength based on digital watermark strength restriction information, and outputting the optimum digital watermark strength, and a digital watermark inserting portion 102 for converting input embedding data into digital watermark information, inserting the digital watermark information into the input image.
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