METHOD AND DEVICE FOR CONFIGURING TRANSFORMS FOR COMPRESSING VIDEO Russian patent published in 2021 - IPC H04N19/61 H04N19/625 H04N19/122 

FIELD: computing technology.

SUBSTANCE: invention relates to video signal processing and in particular to technology for configuring a combination of transformations for each group of transform configuration singled out on the basis of at least one of the prediction modes, block size or block shape. Disclosed is a method for decoding a video signal based on adaptive multiple transforms (AMT). The method consists of the following steps: obtaining an AMT index from a video signal, wherein the AMT index indicates any of a plurality of transform combinations in a transform configuration group, and the transform configuration group includes Discrete Sine Transform Type 7 (DST7) and Discrete Cosine Transform Type 8 (DCT8); retrieving a transform combination corresponding to the AMT index, which consists of a horizontal transform and a vertical transform and includes at least one of DST-7 or DCT-8; performing inverse transformation on the current block based on the combination of transformations; and reconstructing the video signal by using the current inversely transformed block, wherein the AMT is a transform scheme that is based on a transform combination adaptively selected from a lot of transform combinations.

EFFECT: improved efficiency and complexity of coding.

13 cl, 19 dwg