Video decoder, video encoder, and bitstream
AssigneeGuangdong Oppo Mobile Telecommunications Corp., Ltd.
InventorsLuhang XU, Hang HUANG
Life of this patent
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Abstract
A video decoder, a video encoder, and a bitstream are provided. A bitstream is decoded, to obtain P quantized coefficients and a first quantized coefficient in a current region, where the current region is a region in a current block including at least one non-zero quantized coefficient, the first quantized coefficient is obtained by performing parity hiding on a second quantized coefficient in the current region, and P is a positive integer. Then, a parity of the second quantized coefficient is determined according to the P quantized coefficients. The second quantized coefficient having the parity is determined according to the first quantized coefficient and the parity of the second quantized coefficient.
Claims20
A video decoder, comprising:
- at least one processor;
- and
- a memory coupled to the at least one processor and storing at least one computer executable instruction thereon which, when executed by the at least one processor, causes the at least one processor to:
- decode a bitstream, to obtain P quantized coefficients and a first quantized coefficient in a current region, the current region being a region in a current block comprising at least one non-zero quantized coefficient, the first quantized coefficient being obtained by performing parity hiding on a second quantized coefficient in the current region, and P being a positive integer;
- determine a parity of the second quantized coefficient according to the P quantized coefficients;
- and
- determine the second quantized coefficient having the parity according to the first quantized coefficient and the parity of the second quantized coefficient.
A video encoder, comprising:
- at least one processor;
- and
- a memory coupled to the at least one processor and storing at least one computer executable instruction thereon which, when executed by the at least one processor, causes the at least one processor to:
- partition a current block into N regions, N being a positive integer;
- determine a second quantized coefficient in a current region and hide a parity of the second quantized coefficient to obtain a first quantized coefficient, the current region being a region among the N regions comprising at least one non-zero quantized coefficient;
- and
- encode the first quantized coefficient to obtain a bitstream, the parity of the second quantized coefficient being indicated by P quantized coefficients in the current region and P being a positive integer.
A non-transitory computer readable medium storing a bitstream, wherein the bitstream is obtained according to a method, comprising:
- partitioning a current block into N regions, N being a positive integer;
- determining a second quantized coefficient in a current region, the current region being a region among the N regions comprising at least one non-zero quantized coefficient;
- hiding a parity of the second quantized coefficient to obtain a first quantized coefficient;
- and
- encoding the first quantized coefficient to obtain the bitstream, the parity of the second quantized coefficient being indicated by P quantized coefficients in the current region and P being a positive integer.
Dependencies are inferred from the claim text.