Coding method, decoding method, encoder and decoder
AssigneeGuangdong Oppo Mobile Telecommunications Corp., Ltd.
InventorFan WANG
Life of this patent
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Abstract
Disclosed in the present application are a coding method, a decoding method, an encoder and a decoder. The coding method includes: selecting a plurality of coded related blocks corresponding to a current block from a predetermined area, the predetermined area comprising an area having a correlation with the current block; on the basis of information of the plurality of related blocks, determining a context index parameter of a first syntax element of the current block; and on the basis of a context corresponding to the context index parameter, coding the first syntax element of the current block.
Claims20
A coding method, applied to an encoder, comprising:
- selecting, from a predetermined region, a plurality of coded related blocks corresponding to a current block, wherein the predetermined region comprises a region having a correlation with the current block;
- determining, based on information of the plurality of related blocks, a context index parameter for a first syntax element of the current block;
- and
- coding, based on a context corresponding to the context index parameter, the first syntax element of the current block.
A decoding method, applied to a decoder, comprising:
- decoding a bitstream to acquire information to be decoded of a first syntax element of a current block;
- selecting, from a predetermined region, a plurality of decoded related blocks corresponding to the current block, wherein the predetermined region comprises a region having a correlation with the current block;
- determining, based on information of the plurality of related blocks, a context index parameter for the first syntax element of the current block;
- and
- decoding, based on a context corresponding to the context index parameter, the information to be decoded to acquire the first syntax element of the current block.
A decoder, comprising:
- a memory for storing a computer program;
- and
- a processor,
- wherein the processor is configured to execute the computer program to perform the following operations:
- decoding a bitstream to acquire information to be decoded of a first syntax element of a current block;
- selecting, from a predetermined region, a plurality of decoded related blocks corresponding to the current block, wherein the predetermined region comprises a region having a correlation with the current block;
- determining, based on information of the plurality of related blocks, a context index parameter for the first syntax element of the current block;
- and
- decoding, based on a context corresponding to the context index parameter, the information to be decoded to acquire the first syntax element of the current block.
An encoder, comprising:
- a memory for storing a computer program;
- and
- a processor,
- wherein the processor is configured to execute the computer program to implement the following operations:
- selecting, from a predetermined region, a plurality of coded related blocks corresponding to a current block, wherein the predetermined region comprises a region having a correlation with the current block;
- determining, based on information of the plurality of related blocks, a context index parameter for a first syntax element of the current block;
- and
- coding, based on a context corresponding to the context index parameter, the first syntax element of the current block.
Dependencies are inferred from the claim text.