Watermarking with cone-forest detection regions
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United States of America Patent
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Feb 15, 2005
Grant Date -
Feb 12, 2004
app pub date -
Oct 9, 2001
filing date -
Dec 22, 2000
priority date (Note) -
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Abstract
In a watermarking system, an embedder embeds one of several alternative watermark patterns that represent the source message using side information to improve robustness. A detector uses normalized correlation to test all of the patterns, indicating that the source message is present if any one of the patterns is detected. The detection process results in a detection region that is the union of several disjoint cones, or a cone-forest, in media space.
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