Patent Document ID: 9143790
Application ID: 13324968
Patent Status: 1

Claim One:
1. A method for coding a sequence of video images comprising a cutting into zones of at least one current image of the sequence, characterized in that, for the coding of at least one target zone of said at least one current image, it comprises the steps of: determination of a target neighborhood associated to said at least one target zone, said target neighborhood being a predetermined set of neighbor pixels of the target zone, determination of candidate neighborhoods associated respectively to source candidate zones belonging to previously coded and then decoded parts of images of the sequence, for a candidate neighborhood considered, calculation of a prediction error over the neighborhood of the target zone comprising calculating of a difference between the pixels of the candidate neighborhood considered and corresponding pixels of the neighborhood of the target zone, repetition of the calculation of a prediction error over the neighborhood for all the determined candidate neighborhoods, selection of candidate neighborhoods for which the corresponding prediction error is minimal, formation of a number K of groups of candidate neighborhoods from said selected candidate neighborhoods, as a function of a criterion of similarity between the candidate neighborhoods, determination of at least one representative for each group of candidate neighborhoods of said set of K groups, said representative of a given group being: either a zone of pixels which is an average of the candidate zones which are associated respectively to candidate neighborhoods of the given group, the value of each pixel of the zone of pixels being equal to the average of the values of corresponding pixels of the candidate zones, or a candidate zone which is associated to a candidate neighborhood of the given group and which minimizes a reconstruction error with respect to the target zone, identification of a best representative minimizing a reconstruction error with respect to the target zone, identification of the group containing the best representative as the best group of candidate neighborhoods in said number K of groups of candidate neighborhoods, determination of an indication representative of said identified best group of candidate neighborhoods; and coding of said indication.