Watermark encoding method exploiting biases inherent in original signal
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United States of America Patent
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Apr 30, 2002
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app pub date -
Nov 17, 1999
filing date -
May 16, 1996
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Abstract
Source materials to be watermarked already have variations in their characteristics that may tend to aid the watermark encoding. Where such favorable variations exist, relatively less watermark energy can be applied.
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