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

Claim 5:
6. The method of claim 1, wherein the one or more parameters comprises a top offset of the scaling window derived as follows:
subpicScalWinTopOffset=pps_scaling_win_top_offset−sps_subpic_ctu_top_left_y[spIdx]*CtbSizeY/SubHeightC,
wherein subpicScalWinTopOffset denotes the top offset of the scaling window applicable to the subpicture,
wherein pps_scaling_win_top_offset indicates an original top offset applied to a picture size for scaling ratio calculation,
wherein sps_subpic_ctu_top_left_y[spIdx] indicates an original y-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 SubHightC indicates a height of a video block and is obtained from a table according to a chroma format of a picture including the video block.