ENCODER, DECODER, ENCODING METHOD AND DECODING METHOD Russian patent published in 2025 - IPC H04N19/105 H04N19/182 H04N19/577 H04N19/176 

FIELD: image encoding means.

SUBSTANCE: total sum of absolute values of sums of horizontal gradient values for pairs of relative pixel positions is extracted, as a first parameter. Total sum of absolute values of the sums of the values of the vertical gradient for pairs of relative pixel positions is extracted, as a second parameter. Total sum of horizontally related pixel difference values for pairs of relative pixel positions is extracted as a third parameter. Total sum of vertically related pixel difference values for pairs of relative pixel positions is extracted as a fourth parameter. As the fifth parameter, the total sum of vertically related sums of horizontal gradient values is extracted, respectively, for pairs of relative pixel positions. Forecast image is formed to be used to encode the current block using the first, second, third, fourth and fifth parameters.

EFFECT: high efficiency of encoding images.

3 cl, 72 dwg