Encoding devices, decoding devices, and non-transitory computer-readable media

Abstract

The encoding device includes: a circuit; and a memory connected to the circuit. During operation, the circuit derives the sum of the absolute values ​​of a plurality of horizontal gradients derived for a plurality of relative pixel positions as a first parameter; derives the sum of the absolute values ​​of a plurality of vertical gradients derived for a plurality of relative pixel positions as a second parameter; derives the sum of the horizontal corresponding pixel difference values ​​derived for a plurality of relative pixel positions as a third parameter; derives the sum of the vertical corresponding pixel difference values ​​derived for a plurality of relative pixel positions as a fourth parameter; and derives the sum of the sums of the vertical corresponding horizontal gradients derived for a plurality of relative pixel positions as a fifth parameter. Using the first, second, third, fourth, and fifth parameters, a predicted image for encoding the current block is generated.