FIELD: information technology.
SUBSTANCE: invention proposed contains videodecoder (200) and corresponding methods of videosignal data processing for image block with two reference frames' indices to predict this image block. The methods use latent scaling of reference images to improve video compressing. The decoder (200) contains latent scaling coefficient module (280) of reference images, which are used to determine a scaling coefficient value, corresponding to each of the reference image indices. Decoding operations contain receiving reference image indices with data, which corresponds to image block, calculation of latent scaling coefficient in response to image block location relative to reference images, indicated by each index of reference image, extraction of reference image for each of the indices, motion compensation relative to extracted reference image and multiplication of reference images, relative to which the motion compensation was performed, to a corresponding scaling value.
EFFECT: increase of decoding efficiency.
25 cl, 6 dwg
