Patent ID: 8705618

Claim:
A method for coding a video picture of a sequence of pictures comprising dividing a picture into blocks; performing a coding of a source block according to a coding mode selected from at least one of the predictive coding modes of inter picture type which use information from a preceding and a following picture, and of an intra-coding mode of intra picture type using information from the current picture, and wherein said predictive coding mode performs a cosine transformation and a quantization of a residue block that is the difference between the source block and a prediction block calculated from said information, in order to supply quantized coefficients, performing the selection of said coding mode for said source block, according to coding error estimations and estimations of the coding cost of the source block for the different coding modes tested, and estimating the coding error of a current reconstructed block for a current coding mode by the difference between a function of the sum of the absolute values of the difference value coefficients obtained after a mathematical transformation of the residue block from the spatial domain to the frequency domain and before said quantization, and a function of the sum of the absolute values of said mathematical transformed difference value coefficients following said quantization.