Patent ID: 11968367
Assignee: BYTEDANCE INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. A method for storing a bitstream of a video, comprising:
generating the bitstream of the video for a current video region of the video; and
storing the bitstream in a non-transitory computer-readable recording medium,
wherein the generating the bitstream includes configuring a context model for coding a first bin, the first bin and a second bin included in a bin string corresponding to a first index of a secondary transform tool applied to the current video region, wherein the context model is configured only based on a partition type of the current video region and without considering a multiple transform selection index,
wherein the first index indicates an applicability of the secondary transform tool and/or a kernel information of the secondary transform tool, and
wherein the secondary transform tool includes applying, during encoding, a forward secondary transform to an output of a forward primary transform applied to a residual of a video block prior to quantization, or
wherein the secondary transform tool includes applying, during decoding, an inverse secondary transform to an output of dequantization to the video block before applying an inverse primary transform.