METHODS AND APPARATUS FOR EMBEDDING WATERMARKS
First Claim
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1. A method for embedding a watermark comprising:
- identifying a transform coefficient associated with a compressed digital data stream;
obtaining a mantissa code; and
modifying the transform coefficient based on the mantissa code to embed the watermark.
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Abstract
Methods and apparatus for embedding a watermark are disclosed. An example method for embedding a watermark disclosed herein comprises identifying a transform coefficient associated with a compressed digital data stream, obtaining a mantissa code, and modifying the transform coefficient based on the mantissa code to embed the watermark.
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Citations
20 Claims
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1. A method for embedding a watermark comprising:
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identifying a transform coefficient associated with a compressed digital data stream; obtaining a mantissa code; and modifying the transform coefficient based on the mantissa code to embed the watermark. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A tangible article of manufacture storing machine readable instructions which, when executed, cause a machine to:
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identify a transform coefficient associated with a compressed digital data stream; obtain a mantissa code; and modify the transform coefficient based on the mantissa code to embed a watermark. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus for embedding a watermark comprising:
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an identifier to identify a transform coefficient associated with a compressed digital data stream; and a modifier to obtain a mantissa code and modify the transform coefficient based on the mantissa code to embed the watermark. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification