1. A method for deblocking processing of an image divided into smallest blocks of which the boundaries are to be processed, wherein each block is composed of pixel lines perpendicular to a boundary with an adjacent block, the method comprising the steps of: judging whether or not to apply a deblocking filter to segments of the boundary of the block by judging individually for each segment of the boundary based on pixels comprised in a subset of pixel lines of the block, applying or not applying the deblocking filter to the segments of the boundary according to the result of the respective individual judgements.