Patent ID: 8270483
Filing Date: 2012-09-18
Classification: H04N

Abstract:
1. A method to control weighted prediction for video compression comprising: generating statistics based upon analysis of at least one of a plurality of characteristics of a plurality of video frames, the plurality of characteristics comprising luminance, chrominance, spatial and temporal characteristics of the plurality of video frames; detecting a fade condition based upon said statistics that are associated with the at least one of the plurality of characteristics, the fade condition being based on a regular change of said statistics among the plurality of video frames; generating one or more estimated weighted prediction parameters based upon said statistics when said fade condition is detected; encoding said plurality of video frames, wherein said encoding takes into account said estimated weighted prediction parameters when generated; and wherein the statistics associated with the at least one of a plurality of characteristics comprises an average value per picture, a variance value per picture, a derivative of the average value per picture, and a ratio of the variance value per picture for a current picture and each associated reference picture.