Encoder, decoder and corresponding methods using dct2 enabled high level flag
AssigneeHuawei Technologies Co., Ltd.
InventorsHan Gao, Jianle Chen, Semih Esenlik, Anand Meher Kotra, Biao Wang
Life of this patent
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Abstract
A method of video coding a block of a picture includes: obtaining a residual signal resulting from inter- or intra-picture prediction; inferring use of a DCT2 transform core for a sequence of the residual signal; processing the transformation of the block using the inferred transform core.
Claims27
A method of coding video picture blocks of a picture by a coding device, comprising:
- obtaining a residual signal resulting from inter-picture prediction or intra-picture prediction;
- inferring use of a Discrete Cosine Transform type 2 (DCT2) transform core for a block of a sequence of the residual signal;
- and
- transforming the block using the DCT2 transform core.
A decoder, comprising:
- a memory;
- and
- one or more processors in communication with the memory, wherein the one or more processors are configured to:
- obtain a residual signal resulting from inter-picture prediction or intra-picture prediction;
- infer use of a Discrete Cosine Transform type 2 (DCT2) transform core for a block of a sequence of the residual signal;
- and
- transforming the block using the DCT2 transform core.
A non-transitory computer-readable recording medium storing a bitstream that is generated by an image encoding method with an encoding apparatus, wherein the image encoding method comprises:
- obtaining a residual signal resulting from inter-picture prediction or intra-picture prediction;
- inferring use of a Discrete Cosine Transform type 2 (DCT2) transform core for a block of a sequence of the residual signal;
- and
- transforming the block using the DCT2 transform core.
Dependencies are inferred from the claim text.