Patent ID: 8913661
Filing Date: 2014-12-16
Classification: H04N

Abstract:
1. A method of compressing video data, the method being performed by a computer, the method comprising: providing image data for each of a plurality of image portions; determining an index value for each of said image portions based on the respective image data, the index value representing an aggregate of coefficients for each of said image portions, the aggregate of coefficients comprising one of: for one of said image portions being a target image portion to be encoded and having a determined index value, setting a threshold value and searching all of said image portions having index values inside a range of index values for a matching image portion that matches the target image portion, the range of index values being defined by the determined index value of the target image portion to be encoded minus the threshold value to the determined index value of the target image portion to be encoded plus the threshold value, the threshold value being set so that the range of index values does not include index values for all of said image portions; and generating difference data for the target image portion relative to the matching image portion, and including the difference data in an encoded video signal.