Opened 4 years ago
Closed 4 years ago
#1121 closed defect (invalid)
Typo in equations in C.24 and C.25 of C.7 Subpicture sub-bitstream extraction process (VVC D9)
Reported by: | e.thomas | Owned by: | |
---|---|---|---|
Priority: | minor | Milestone: | |
Component: | spec | Version: | |
Keywords: | Cc: | ksuehring, bbross, XiangLi, fbossen, jvet@… |
Description
Wrong placement of parenthesis in C.24 and C.25
(C.24)
subpicWidthInLumaSamples = min( ( sps_subpic_ctu_top_left_x[ subpicIdx ] + sps_subpic_width_minus1[ subpicIdx ] + 1 ) * CtbSizeY, pps_pic_width_in_luma_samples ) − sps_subpic_ctu_top_left_x[ subpicIdx ] * CtbSizeY
(C.25)
subpicHeightInLumaSamples = min( ( sps_subpic_ctu_top_left_y[ subpicIdx ] + sps_subpic_height_minus1[ subpicIdx ] + 1 ) * CtbSizeY, pps_pic_height_in_luma_samples ) − sps_subpic_ctu_top_left_y[ subpicIdx ] * CtbSizeY
It should be:
(C.24)
subpicWidthInLumaSamples = min( ( sps_subpic_ctu_top_left_x[ subpicIdx ] + sps_subpic_width_minus1[ subpicIdx ] + 1 ) * CtbSizeY, pps_pic_width_in_luma_samples − sps_subpic_ctu_top_left_x[ subpicIdx ] * CtbSizeY)
(C.25)
subpicHeightInLumaSamples = min( ( sps_subpic_ctu_top_left_y[ subpicIdx ] + sps_subpic_height_minus1[ subpicIdx ] + 1 ) * CtbSizeY, pps_pic_height_in_luma_samples − sps_subpic_ctu_top_left_y[ subpicIdx ] * CtbSizeY)
Change history (2)
comment:1 Changed 4 years ago by skupin
comment:2 Changed 4 years ago by yk
- Resolution set to invalid
- Status changed from new to closed
The parenthesis placement in D9 and D10 seems correct. The min term derives the accurate right/bottom boundary position from which then the left/top boundary position is subtracted to derive width/height.