Wavelet domain watermarks
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United States of America Patent
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May 7, 2002
Issued Date -
N/A
app pub date -
Jul 19, 2000
filing date -
Feb 14, 2000
priority date (Note) -
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status (Latency 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. A watermark orientation signal is embedded in a wavelet decomposed signal to facilitate detection of the watermark in a geometrically distorted version of the embedded signal.
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