Patent ID: 6661926
Filing Date: 2003-12-09
Classification: H04N

Abstract:
Picture compression process, especially of the MPEG2 type, in which each picture macroblock (10) is subjected to a coding chosen, for each macroblock, from among several types of coding using coding modes such as inter or intra, frame or field, backward or forward motion compensation, characterized in that in order to select the type of coding to be applied to the macroblock, the following parameter is determined for all possible modes of coding: MB_activâˆ’&agr;_Q, in which formula:MB_activ corresponds to the energy or activity of the macroblock, Q is the quantization interval and &agr; is a predetermined parameter, wherein the mode of coding selected being the mode corresponding to the minimum value of said parameter MB_activâˆ’&agr;_Q.