Patent ID: 8019804
Filing Date: 2011-09-13
Classification: H04N

Abstract:
1. A method for calculating the sum of squared differences between an original block S and a reconstructed block R of image or video data, the method comprising the steps of: (a) computing with a processor a predicted block P corresponding to the original block S, using inter or intra frame prediction, (b) calculating with the processor a residual block D from the original block S and the predicted block P, said residual block D having a plurality of coefficients, (c) applying with the processor an integer image transform to the coefficients of the residual block D so as to obtain a transformed residual block F*, said transformed residual block having a plurality of coefficients f* (d) finding with the processor a plurality of coefficients {circumflex over (f)}* (e) computing with the processor a sum of squared differences between f*