Patent ID: 11968375
Assignee: BYTEDANCE INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. The method of claim 1, wherein the one or more parameters comprises a left offset of the scaling window applicable to the subpicture derived as follows:
subpicScalWinLeftOffset=pps_scaling_win_left_offset−sps_subpic_ctu_top_left_x[spIdx]*CtbSizeY/SubWidthC,
wherein subpicScalWinLeftOffset denotes the left offset of the scaling window applicable to the subpicture,
wherein pps_scaling_win_left_offset indicates original left offset applied to a picture size for scaling ratio calculation,
wherein sps_subpic_ctu_top_left_x[spIdx] indicates an original x-coordinate of a coding tree unit located at a top-left corner of the spIdx-th subpicture,
wherein CtbSizeY is a width or a height of a luma coding tree block or coding tree unit, and
wherein SubWidthC indicates a width of a video block and is obtained from a table according to a chroma format of a video picture including the video block.