Method and system for embedding message data in a digital image sequence
First Claim
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1. A method for embedding message data in an image sequence having two or more frames, comprising the steps of:
- a) providing a dispersed message image representative of the message data;
b) producing a cyclically shifted version of the dispersed message image corresponding to a spatial offset;
c) combining the cyclically shifted version of the dispersed message image with a frame of the image sequence; and
d) repeating steps b) and c) for one or more additional frames of the image sequence.
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Abstract
A method for embedding message data in a digital image sequence having two or more frames, includes the steps of: providing a dispersed message image representative of the message data; and adding spatially shifted versions of the dispersed message image to successive frames of the digital image sequence.
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Citations
16 Claims
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1. A method for embedding message data in an image sequence having two or more frames, comprising the steps of:
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a) providing a dispersed message image representative of the message data;
b) producing a cyclically shifted version of the dispersed message image corresponding to a spatial offset;
c) combining the cyclically shifted version of the dispersed message image with a frame of the image sequence; and
d) repeating steps b) and c) for one or more additional frames of the image sequence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 15, 16)
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8. A system for embedding message data in an image sequence having two or more frames, comprising:
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a) means for providing a dispersed message image representative of the message data;
b) means for producing a cyclically shifted version of the dispersed message image corresponding to a spatial offset;
c) means for combining the cyclically shifted version of the dispersed message image with a frame of the image sequence; and
d) means for repeating initiating repetition of the means for producing and means for combining. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification