Patent ID: 7366236
Filing Date: 2008-04-29
Classification: G06F,H04N

Abstract:
1. A method for selecting inverse discrete cosine transform (iDCT) algorithms, comprising: a) examining the coefficients of a plurality of DCT blocks corresponding to selected frames within a video shot to determine an End of Block (EOB) length for each of the examined DCT blocks, wherein a video shot is a sequence of frames bounded on each side by a video transition; b) examining a distribution of EOB lengths associated with a single selected frame; c) selecting a customized subset of iDCT algorithms for the entire video shot from a larger set of iDCT algorithms according to the distribution of EOB lengths for the single selected frame; and d) selecting and executing one of the customized subset of iDCT algorithms for each of the plurality of blocks within the video shot according to the associated EOB lengths of the blocks.