Watermark encoding using arbitrary features
First Claim
1. A method of encoding original data with watermark data, comprising:
- analyzing the original data to discern innate watermark biases therein; and
encoding watermark data in the original data, exploiting said innate biases to partially represent the encoded watermark, thereby yielding encoded data.
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Abstract
Watermark detection in an image or the like is optimized by exploiting the innate biases in the image to emphasize the watermark signal. The watermark signal can be trial-located with different origins in the image to find one that yields improved results. Similarly, the image can be processed (e.g., by changing resolution, rotation, or compression) so as to change the innate biases to better reinforce the watermark signal. Compression of an image can be done in accordance with a desired watermark signal, with the compressor deciding which image components to retain and which to discard based, in part, on a watermark signal that is to be encoded (or maintained) in the image.
121 Citations
14 Claims
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1. A method of encoding original data with watermark data, comprising:
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analyzing the original data to discern innate watermark biases therein; and
encoding watermark data in the original data, exploiting said innate biases to partially represent the encoded watermark, thereby yielding encoded data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification