ENCODER, DECODER AND CORRESPONDING METHODS USING DCT2 HIGH LEVEL PERMISSION FLAG Russian patent published in 2023 - IPC H04N19/12 H04N19/157 H04N19/179 H04N19/625 H04N19/70 

Abstract RU 2801589 C2

FIELD: video encoding.

SUBSTANCE: invention relates to image block video encoding means. A residual signal of the resulting inter- or intra-prediction image is obtained. Carry out the derivation of the use of the DCT2 transformation kernel for the sequence of the residual signal. The block transformation is processed using the derived transformation kernel. In which the use of the DCT2 transformation kernel is derived from the sequence level DCT2 enable flag in the sequence parameter set (SPS).

EFFECT: improved compression ratio with minimal loss of image quality or no such loss at all.

47 cl, 11 dwg, 4 tbl

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RU 2 801 589 C2

Authors

Gao, Han

Chen, Jianle

Esenlik, Semih

Kotra, Anand Meher

Wang, Biao

Dates

2023-08-11Published

2020-01-11Filed