Multimedia data embedding
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United States of America Patent
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Aug 27, 2002
Grant Date -
N/A
app pub date -
Jan 11, 1999
filing date -
Jan 11, 1999
priority date (Note) -
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Abstract
Multimedia data embedding, such as video, image or audio data watermarking. In one embodiment, a computer-implemented method first receives a vector x of N data samples, where X=[x(0)x(1) . . . x(N-1)] and represents multimedia. Next, the method receives a vector p, where P=[p(0)p(1) . . . p(N-1)] and represents a pseudo-random sequence. Finally, the method generates a new vector x' in which the vector p is embedded in the vector x, such that x'=[x'(0)x'(1) . . . x'(N-1)] and x'=x+aq, where a comprises a perception-based scaling factor and the vector q comprises a perceptually weighted pseudo-random sequence based on the vector p.
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