Patent ID: 11968375
Assignee: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. The method of claim 1, wherein the one or more parameters comprises a bottom offset of the scaling window applicable to the subpicture derived as follows:
subpicScalWinBotOffset=(botSubpicBd>=sps_pic_height_max_in_luma_samples) ? pps_scaling_win_bottom_offset:pps_scaling_win_bottom_offset−(sps_pic_height_max_in_luma_samples−botSubpicBd)/SubHeightC, and botSubpicBd=(sps_subpic_ctu_top_left_y[spIdx]+sps_subpic_height_minus1[spIdx]+1)*CtbSizeY,
wherein subpicScalWinBotOffset denotes the bottom offset of the scaling window applicable to the subpicture,
wherein sps_pic_height_max_in_luma_samples indicates an original maximum height, in units of luma samples, of each decoded picture referring to the sequence parameter set,
wherein pps_scaling_win_bottom_offset indicates an original bottom offset applied to a picture size for scaling ratio calculation,
wherein SubHeightC 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,
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 sps_subpic_height_minus1[spIdx] indicates an original height of the spIdx-th subpicture, and
wherein CtbSizeY is a width or a height of a luma coding tree block or coding tree unit.