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US07298865B2 Secure robust high-fidelity watermarking 有权
安全可靠的高保真水印

Secure robust high-fidelity watermarking
摘要:
For each small image region (in space and time), a measure of perceptual transparence of each of a set of possible watermark carrier modulations is used to choose a subset of such modulations, from which a secure random number generator selects, for each image region, a single carrier, modulations of which carry the watermark data.
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