Method and system for recognition of broadcast segments
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, and for producing a corresponding mask word including a plurality of bit values each representing a reliability of a corresponding value of the signature, comprising the steps of:
- forming a first signature having a plurality of values each based on respective ones of said portions of the video signal;
forming a second signature having a plurality of values each based on respective ones of a plurality of shifted portions of the video signal each corresponding to a respective one of said portions and having a location displaced from a location of said respective one of said portions by a predetermined amount, such that each value of said first signature corresponds to a value of the second signature;
comparing respective values of said first and second signatures;
establishing said bit values of said mask word based on the comparison of a respective value of said first signature with the corresponding value of the second signature.
10 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to a method of producing a signature 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. The invention also serves to produce a corresponding mast word including a plurality of bit values each representing a reliability of a corresponding value of the signature. The first signature is formed having a plurality of values each of which is based on a respective one of the portions of the video signal. A second signature is formed also having a plurality of values each based on respective ones of a plurality of shifted portions of the video signal. The shifted portions each corresponds to a respective one of the video signal portions and has a location displaced from a location of the respective one of the portions by a predetermined amount, such that each value of the first signature corresponds to a value of the second signature. The respective values of the first and second signatures are compared and bit values of the mask word are established based on this comparison.
-
Citations
3 Claims
-
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, and for producing a corresponding mask word including a plurality of bit values each representing a reliability of a corresponding value of the signature, comprising the steps of:
-
forming a first signature having a plurality of values each based on respective ones of said portions of the video signal; forming a second signature having a plurality of values each based on respective ones of a plurality of shifted portions of the video signal each corresponding to a respective one of said portions and having a location displaced from a location of said respective one of said portions by a predetermined amount, such that each value of said first signature corresponds to a value of the second signature; comparing respective values of said first and second signatures; establishing said bit values of said mask word based on the comparison of a respective value of said first signature with the corresponding value of the second signature. - View Dependent Claims (2)
-
-
3. 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 each representing a corresponding region of the picture, and for producing a corresponding mask word including a plurality of bit values each representing a reliability of a corresponding value of the signature, comprising:
-
means for forming a first signature having a plurality of values each based on respective ones of said portions of the video signal; means for forming a second signature having a plurality of values each based on respective ones of a plurality of shifted portions of the video signal each corresponding to a respective one of said portions and having a location displaced from a location of said respective one of said portions by a predetermined amount, such that each value of said first signature corresponds to a value of the second signature; means for comparing the respective values of said first and second signatures; and means for establishing said bit values of said mask word based on the comparison of a respective value of said first signature with the corresponding value of the second signature.
-
Specification