Transmarking of multimedia signals
First Claim
1. A method of transmarking a media signal previously embedded with a first digital watermark using a first digital watermark embedding method, comprising:
- detecting the first digital watermark in the media signal;
embedding message information from the first digital watermark into a second digital watermark in the media signal before the media signal undergoes a transformation process such that the second digital watermark is adapted to survive the transformation process.
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Abstract
A method of transmarking a watermarked media signal to adapt the watermark to the robustness and perceptibility constraints of a new environment. This transmarking method detects the first digital watermark in the media signal. It then embeds message information from the first digital watermark into a second digital watermark in the media signal before the media signal undergoes a transformation process. The second digital watermark is adapted to survive the transformation process. A variation of this method detects the first digital watermark in the media signal, converts the media signal to a different format, and embeds message information from the first digital watermark into a second digital watermark in the converted media signal. The second digital watermark is adapted to robustness or perceptibility parameters associated with the new format.
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Citations
20 Claims
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1. A method of transmarking a media signal previously embedded with a first digital watermark using a first digital watermark embedding method, comprising:
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detecting the first digital watermark in the media signal;
embedding message information from the first digital watermark into a second digital watermark in the media signal before the media signal undergoes a transformation process such that the second digital watermark is adapted to survive the transformation process. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of transmarking a media signal previously embedded with a first digital watermark using a first digital watermark embedding method, comprising:
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detecting the first digital watermark in the media signal;
converting the media signal to a different format;
embedding message information from the first digital watermark into a second digital watermark in the converted media signal such that the second digital watermark is adapted to robustness or perceptibility parameters associated with the new format. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A transmarker for transmarking a media signal previously embedded with a first digital watermark using a first digital watermark embedding method, comprising:
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means for detecting the first digital watermark in the media signal;
means for embedding message information from the first digital watermark into a second digital watermark in the media signal before the media signal undergoes a transformation process such that the second digital watermark is adapted to survive the transformation process.
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20. A transmarker for transmarking a media signal previously embedded with a first digital watermark using a first digital watermark embedding method, comprising:
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means for detecting the first digital watermark in the media signal;
means for converting the media signal to a different format;
means for embedding message information from the first digital watermark into a second digital watermark in the converted media signal such that the second digital watermark is adapted to robustness or perceptibility parameters associated with the new format.
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Specification