RU-2026112717-A - ENCODING METHOD, DECODING METHOD, BITSTRIM, CODER, DECODER AND STORAGE CARRIER

Inventors

• ХУАН, Хан

Assignees

• ГУАНДУН ОППО МОБАЙЛ ТЕЛЕКОММЬЮНИКЕЙШНС КОРП., ЛТД.

Dates

Publication Date

20260508

Application Date

20230928

Claims (20)

1. 1. A decoding method applied to a decoder, wherein the method comprises:
2. parsing the bit stream to determine the value of the first syntactic identification information;
3. if the first syntactic identification information indicates that the current block uses the inter-component prediction merging mode, determining a value of the second syntactic identification information;
4. if the second syntax identification information indicates that the current block uses a merge mode for the inter-component prediction merging mode, determining at least one merge type identification value corresponding to the current block;
5. determining at least one chroma prediction mode corresponding to the current block according to at least one merge type identification value;
6. performing intra-chroma prediction with respect to the current block using at least one chroma prediction mode to determine at least one first prediction value;
7. performing intra-chroma prediction with respect to the current block using the inter-component prediction fusion mode to determine a second prediction value; and
8. determining a chroma prediction value corresponding to the current block based on at least one first prediction value and a second prediction value.
9. 2. The method according to claim 1, characterized in that determining at least one color prediction mode corresponding to the current block according to at least one merge type identification value includes:
10. determining at least one chroma prediction mode corresponding to the current block in a given correspondence between the merge type identification values and the chroma prediction modes according to at least one merge type identification value; the given correspondence includes at least one given merge type identification value corresponding to at least one given chroma prediction mode.
11. 3. The method according to claim 1, characterized in that determining at least one merge type identification value corresponding to the current block includes:
12. determining the identification value of the merge type corresponding to the current block;
13. and determining at least one chroma prediction mode corresponding to the current block according to at least one merge type identification value includes:
14. determining the color prediction mode corresponding to the current block according to the merge type identification value corresponding to the current block.
15. 4. The method according to any one of paragraphs 1-3, characterized in that the color prediction mode is an inter-component prediction mode or a non-inter-component prediction mode.
16. 5. The method according to any one of claims 1 to 3, characterized in that the color prediction mode is one of the following: inter-component linear model prediction mode, MMLM mode, convolutional inter-component model mode, GLM mode, DIMD mode, or DM mode.
17. 6. The method according to any one of paragraphs 1-5, characterized in that determining the chroma prediction value corresponding to the current block, based on at least one first prediction value and a second prediction value, includes:
18. determining a value of a weighted sum of at least one first prediction value and a second prediction value; and
19. shift the weighted sum value to determine the chroma prediction value corresponding to the current block.
20. 7. The method according to paragraph 6, characterized in that it additionally includes: