RU-2026112873-A - ENCODING METHOD, DECODING METHOD, CODE STREAM, CODER, DECODER AND DATA CARRIER

Inventors

• ВАН, Фань

Assignees

• ГУАНДУН ОППО МОБАЙЛ ТЕЛЕКОММЬЮНИКЕЙШНС КОРП., ЛТД.

Dates

Publication Date

20260508

Application Date

20230928

Claims (20)

1. 1. A decoding method applicable to a decoder, the method comprising
2. determining the prediction mode of the current block;
3. determining at least one context model according to the prediction mode of the current block;
4. decoding a bit stream according to at least one context model to determine a binary string of a current block, wherein the binary string comprises at least one binary symbol;
5. performing inverse binarization processing on the binary string to determine the value of the first syntax identification information; and
6. when the first syntax identification information indicates that the current block uses the first transformation mode, determining a transformation kernel of the current block, and performing an inverse transformation on the transformation coefficients of the current block according to the transformation kernel to determine a residual block of the current block.
7. 2. The method according to claim 1, characterized in that the prediction mode of the current block includes at least one of an inter prediction mode or an intra prediction mode, and the method further includes:
8. determining that at least one context model corresponding to the inter prediction mode differs from at least one context model corresponding to the intra prediction mode.
9. 3. The method according to paragraph 2, characterized in that performing the processing in the form of inverse binarization with respect to the binary string to determine the value of the first identification information of the syntax includes:
10. when the prediction mode of the current block is at least one of an intra-prediction mode or an inter-prediction mode, performing inverse binarization processing on the binary string based on the first mode to determine a value of the first syntax identification information.
11. 4. The method according to paragraph 2, characterized in that performing the processing in the form of inverse binarization with respect to the binary string to determine the value of the first identification information of the syntax includes:
12. when the prediction mode of the current block is an intra prediction mode, performing inverse binarization processing on the binary string based on the first mode to determine a value of the first syntax identification information; or
13. when the prediction mode of the current block is the inter prediction mode, performing inverse binarization processing on the binary string based on the second mode to determine the value of the first syntax identification information,
14. however, the first mode differs from the second mode.
15. 5. The method according to claim 1, characterized in that decoding the bit stream according to at least one context model for determining the binary string of the current block includes:
16. when the prediction mode of the current block is an intra prediction mode, decoding the bitstream according to at least one first context model and a fixed-length decoding mode to determine the first binary row of the current block; or
17. when the prediction mode of the current block is an inter prediction mode, decoding the bit stream according to at least one second context model and a truncated unary code mode to determine a second binary string of the current block,
18. wherein at least one first context model differs from at least one second context model.
19. 6. The method according to paragraph 1, characterized in that the definition of the transformation core of the current block includes:
20. determining the set of transformation kernels of the current block; and