Patent ID: 8587668
Filing Date: 2013-11-19
Classification: G06F,G06K,H04N

Abstract:
1. A method of identifying a video signal comprising the steps of: receiving a first video signal at a processing device from an input device operably connected to the processing device; executing the following steps on a processing device; extracting at least one perceptual feature from a plurality of frames of the first video signal; assigning a weighting value to each perceptual feature; selecting at least a portion of the perceptual features according to the weighting value; extracting at least one additional feature from the plurality of frames of the first video signal; creating a digital fingerprint from the selected perceptual features and from the at least one additional feature; creating a first digital signature from a plurality of the digital fingerprints; storing the first digital signature which identifies the video signal according to the sorted perceptual features in a database; assigning a cost value to a plurality of edit operations; comparing the first digital signature to a second digital signature to identify each edit operation required to transform the first digital signature to the second digital signature; adding a total cost of from the cost value for each of the edit operations; and comparing the total cost of the edit operations against a predetermined level to determine whether the first and the second digital signatures identify a near-duplicate video signal.