METHOD AND DEVICE FOR PREDICTING A CURRENT BLOCK OF PIXELS IN A CURRENT FRAME, AND CORRESPONDING ENCODING AND/OR DECODING METHODS AND DEVICES

摘要

The disclosure relates to a method for predicting a current block of pixels in a current frame, comprising:- obtaining (11) a first prediction of the current block, delivering a first predicted block,- updating said first predicted block by implementing at least one iteration (12) of the following steps:∘ obtaining (121) a current patch formed by a current template of the current block and an updated predicted block obtained at a previous iteration;o searching (122) for K nearest neighbor patches of said current patch in a decoded part of the current frame or in at least one reference frame;o determining (123) a linear combination of the K nearest neighbor patches which approximates the current patch, or of the K templates of the nearest neighbor patches which approximates the current template, according to a predetermined criterion,∘ obtaining (124) an updated predicted block by applying said linear combination to the corresponding K blocks of the nearest neighbor patches.