METHOD FOR MODIFICATION OF REFERENCE BLOCK IN REFERENCE IMAGE, METHOD FOR CODING OR DECODING SAID REFERENCE IMAGE WITH HELP OF REFERENCE BLOCK AND DEVICE TO THIS END, AND DATA CARRIER TO TRANSFER BLOCK CODED WITH HELP OF REFERENCE BLOCK

摘要

FIELD: physics, computation hardware.;SUBSTANCE: invention relates to coding/decoding of picture signals. Method for variation of reference block (RFBL) with reference pixels in reference picture (I_REF) converts (TRF) reference block to first set of factors (REF (u, v,)). It changes the first set of factors (REF (u, v,)) with the help of one or several weights (TR (u, v,)) and executes the inversion (ITR) of changed. Note here that weights (TR (u, v,)) are defined by extra pixels in current picture (I_CUR) and extra reference pixels in reference picture. Application of extra pixels and extra reference pixels allows the determination of spectral weights so that they display the effects of attenuation. Particularly, if reference frame consists of two black-out frames one of which should be forecast with the help of reference frame, then assignment of weights in spectral band allows isolation of significant frame from two frames.;EFFECT: efficient coding in the case of attenuation.;10 cl, 3 dwg