Method and apparatus for associating identifiers with content
First Claim
1. A method of steganographically encoding digital content with digital watermark data, comprising:
- receiving first uncompressed content data representing digital content;
processing said first content data to discern components of said content; and
identifying certain of said components that may be omitted to effect compression of said content, and whose omission would tend to encode the digital content with said digital watermark data.
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Accused Products
Abstract
Watermark detection in an image or the like can be 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 identifier, with the compressor deciding which image components to retain and which to discard based, in part, on the identifier that is to be associated with the image. The techniques are also applicable to other forms of content, such as audio.
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Citations
15 Claims
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1. A method of steganographically encoding digital content with digital watermark data, comprising:
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receiving first uncompressed content data representing digital content; processing said first content data to discern components of said content; and identifying certain of said components that may be omitted to effect compression of said content, and whose omission would tend to encode the digital content with said digital watermark data. - View Dependent Claims (2, 3, 4, 5)
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6. A method of processing digital content to associate a desired identifier therewith, comprising:
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receiving first uncompressed content data representing digital content; processing said first content data to discern components of said content; and identifying certain of said components that may be omitted to effect compression of said content, and whose omission would tend to associate the desired identifier with said content. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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- 13. In a method of compressing uncompressed content data, the method including selectively omitting certain components of content to effect compression thereof, an improvement wherein said omitting of content components also serves to associate a desired identifier with said content.
Specification