Method and apparatus for embedding auxiliary information within original data
AssigneeDigimarc Corporation
InventorKenneth L. Levy
Life of this patent
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Abstract
This patent application is generally related to watermarking and steganography. One claim recites a method of transmarking a media signal previously embedded with a first digital watermark using a first digital watermark embedding method. The method includes: utilizing a programmed electronic processor, detecting the first digital watermark in the media signal; converting the media signal to a different format; utilizing a programmed electronic processor, embedding detected 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. Of course, other combinations and claims are provided as well.
Claims18
A method comprising:
- utilizing an electronic processor programmed for transmarking a media signal by acts of:
- detecting a first digital watermark in the media signal, the media signal being embedded with the first digital watermark using a first digital watermark embedding method;
- embedding detected 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.
A method of transmarking a media signal previously embedded with a first digital watermark using a first digital watermark embedding method, comprising:
- utilizing a programmed electronic processor, detecting the first digital watermark in the media signal;
- converting the media signal to a different format;
- utilizing a programmed electronic processor, embedding detected 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.
An apparatus comprising:
- means for transmarking a media signal including:
- means for detecting a first digital watermark in the media signal, the media signal being embedded with the first digital watermark using a first digital watermark embedding method;
- means for embedding detected 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.
An apparatus for transmarking a media signal previously embedded with a first digital watermark using a first digital watermark embedding method, said apparatus comprising:
- means for detecting the first digital watermark in the media signal;
- means for converting the media signal to a different format;
- means for embedding detected 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.
Dependencies are inferred from the claim text.