Optimization methods for the insertion, projection, and detection of digital watermarks in digital data
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United States of America Patent
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Jan 12, 2010
Grant Date -
Dec 27, 2007
app pub date -
Sep 7, 2007
filing date -
Jul 2, 1996
priority date (Note) -
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Abstract
Disclosed herein are methods and systems for encoding digital watermarks into content signals. Also disclosed are systems and methods for detecting and/or verifying digital watermarks in content signals. According to one embodiment, a system for encoding of digital watermark information includes: a window identifier for identifying a sample window in the signal; an interval calculator for determining a quantization interval of the sample window; and a sampler for normalizing the sample window to provide normalized samples. Other methods and systems for encoding/decoding digital watermarks are also disclosed.
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