To change the reference block of the reference image, a method for encoding or decoding a block of the image by reference block and equipment, as well as a recording medium or a signal carrying a block encoded by the modified reference block

摘要

The invention is related to a method for modifying a reference block (RFBL) of a reference image (I_REF). That is, the method comprises transforming (TRF) the reference block (RFBL) into a first set (REF(u,v,)) of coefficients, modifying the first set (REF(u,v,)) of coefficients by help of one or more weights (TR(u,v,)) and inverse transforming (ITR) the modified first set of coefficients wherein said weights (TR(u,v,)) are determined by help of one or more further pixels of the current image (I_CUR) and by help of one or more further reference pixels of the reference image (I_REF). Using further pixels of the current image as well as further reference pixels of the reference image allows spectral weights to be determined such that they reflect fading effects. Especially, if a reference frame consists of two cross-faded frames of which one shall be predicted by help of said reference frame, then, spectral domain weighting allows for separating the relevant of the two frames.