Human perceptual model applied to rendering of watermarked...

Details Human perceptual model applied to rendering of watermarked... Human perceptual model applied to rendering of watermarked...

2008-04-01

2008-04-01

Werner, Brian (Department: 2624)

Image analysis

Applications

Reexamination Certificate

active

10826970

ABSTRACT:
A digital watermarking system uses a model of a rendering device to take into account the impact of the rendering device on visual or auditory quality of the watermarked signal. For visual content, a reference image and watermarked image are passed through the model and then supplied to a visual quality metric that assesses the visibility of the watermark. The digital watermark embedding is adjusted iteratively with each pass through this process to produce a watermarked signal that has the desired visual quality.

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U.S. Appl. No. 60/463,175, filed Apr. 15, 2003.
U.S. Appl. No. 11/846,449, filed Aug. 28, 2007.

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