Method for processing adaptive color transform and low-frequency non-separable transform in video coding
AssigneeAlibaba Group Holding Limited
InventorsMohammed Golam Sarwer, Yan Ye
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Abstract
Methods, apparatus and non-transitory computer readable medium for processing video data are provided. The method includes: receiving one or more video sequences for processing; and coding the one or more video sequences using only one of a low-frequency non-separable transform (LFNST) and an adaptive color transform (ACT) when coding of both LFNST and ACT is not allowed.
Claims9
A computer-implemented video encoding method, comprising:
- receiving one or more video sequences for processing;
- signaling a flag for enabling an adaptive color transform (ACT) in coding unit (CU) level;
- enabling a low-frequency non-separable transform (LFNST) based on a status of the ACT not being used in a current coding unit;
- and
- coding the one or more video sequences using the ACT when the ACT is enabled or using the LFNST when the LFNST is enabled.
An apparatus for performing video data processing, the apparatus comprising:
- a memory figured to store instructions;
- and
- one or more processors configured to execute the instructions to cause the apparatus to perform:
- receiving one or more video sequences for processing;
- signaling a flag for enabling an adaptive color transform (ACT) in coding unit (CU) level;
- enabling a low-frequency non-separable transform (LFNST) based on a status of the ACT not being used in a current coding unit;
- and
- coding the one or more video sequences using the ACT when the ACT is enabled or using the LFNST when the LFNST is enabled.
A non-transitory computer readable medium storing a bitstream of a video for processing according to a method comprising:
- signaling a flag for enabling an adaptive color transform (ACT) in coding unit (CU) level;
- enabling a low-frequency non-separable transform (LFNST) based on a status of the ACT not being used in a current coding unit;
- and
- coding the one or more video sequences using the ACT when the ACT is enabled or using the LFNST when the LFNST is enabled.
Dependencies are inferred from the claim text.