Method and apparatus for producing a signature characterizing an interval of a video signal while compensating for picture edge shift
First Claim
1. A method of producing a signature characterizing an interval of a video signal representing a picture for use in broadcast segment recognition, wherein the signature is produced based on portions of the video signal representing corresponding regions of the picture each spaced a respective predetermined amount from a nominal edge of the picture, comprising the steps of:
- detecting a shift in the video signal corresponding with a shift in the edge of the picture from the nominal edge thereof;
adjusting the portions of the video signal to compensate for said shift in the edge of the picture; and
producing the signature based on the adjusted portions of the video signal.
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Accused Products
Abstract
Signatures are produced for characterizing an interval of a video signal representing a picture for use in broadcast segment recognition. The signature is produced based on portions of the video signal representing corresponding regions of the picture each spaced by a certain amount from a nominal edge of the picture. A shift in the video signal corresponding with a shift in the edge of the picture from a nominal edge of the picture is detected. The portions of the video signal are adjusted to compensate for the shift in the edge of the picture and a signature is produced based on the adjusted portions of the video signal.
260 Citations
6 Claims
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1. A method of producing a signature characterizing an interval of a video signal representing a picture for use in broadcast segment recognition, wherein the signature is produced based on portions of the video signal representing corresponding regions of the picture each spaced a respective predetermined amount from a nominal edge of the picture, comprising the steps of:
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detecting a shift in the video signal corresponding with a shift in the edge of the picture from the nominal edge thereof; adjusting the portions of the video signal to compensate for said shift in the edge of the picture; and producing the signature based on the adjusted portions of the video signal. - View Dependent Claims (2, 3, 4, 5)
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6. A system for producing a signature characterizing an interval of a video signal representing a picture for use in broadcast segment recognition wherein the signature is produced based on portions of the video signal representing corresponding regions of the picture each spaced a respective predetermined amount from a nominal edge of the picture, comprising:
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means for detecting a shift in the video signal corresponding with a shift in the edge of the picture from the nominal edge thereof; means for adjusting the portions of the video signal to compensate for said shift in the edge of the picture; and means for producing the signature based on the adjusted portions of the video signal.
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Specification