Wavelet domain watermarks
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United States of America Patent
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Jun 5, 2012
Grant Date -
Nov 27, 2008
app pub date -
Jan 15, 2008
filing date -
Feb 14, 2000
priority date (Note) -
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Abstract
A wavelet domain watermark encoder and decoder embed and detect auxiliary signals in a media signal, such as a still image, video or audio signal. The watermark encoders and decoders employ techniques that take advantage of processing plural levels of resolution of the signal to embed and detect auxiliary information in the media signal.
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