Methods and apparatus for digital watermarking and watermark decoding
OwnerHong Heather Yu, Prabir Bhattacharyainventors
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Abstract
One aspect of the present invention is a method for embedding a watermark in a digital movie. The method includes: buffering portions of an electronic digital representation of a digital movie in at least one digital representation domain; embedding an electronic watermark into at least one of the buffered digital representation domain of the movie; and presenting portions of the digital movie while the embedding is occurring.
Claims48
A method for embedding a watermark in a digital movie, said method comprising:
- buffering portions of an electronic digital representation of a digital movie in at least one digital representation domain;
- embedding an electronic watermark into at least one said buffered digital representation domain of the movie;
- and
- presenting portions of the digital movie while said embedding is occurring.
A method for decoding a watermark encoded movie, said method comprising:
- determining a location of an object of reference in a video frame of a movie;
- determining a centroid, second moment, and third moment of the object of reference;
- locating watermark locations known in a movie metric utilizing a metric adjusted in accordance with the location of the object of reference and said centroid, second moment, and third moment;
- and
- decoding the watermark at said watermark locations located utilizing the adjusted metric.
An apparatus for embedding a watermark in a digital movie, said apparatus configured to:
- buffer portions of an electronic digital representation of a digital movie in at least one digital representation domain;
- embed an electronic watermark into at least one said buffered digital representation domain of the movie;
- and
- present portions of the digital movie while said embedding is occurring.
An apparatus for decoding a watermark encoded movie, said apparatus configured to:
- determine a location of an object of reference in a video frame of a movie;
- determine a centroid, second moment, and third moment of the object of reference;
- locate watermark locations known in a movie metric utilizing a metric adjusted in accordance with the location of the object of reference and said centroid, second moment, and third moment;
- and
- decode the watermark at said watermark locations located utilizing the adjusted metric.
Dependencies are inferred from the claim text.