Opened 4 years ago
Closed 4 years ago
#1203 closed defect (fixed)
Missing inferred values for alf_luma_clip_idx and alf_chroma_clip_idx
| Reported by: | nanhu | Owned by: | |
|---|---|---|---|
| Priority: | minor | Milestone: | VVC D10 |
| Component: | spec | Version: | VVC D10 vD |
| Keywords: | Cc: | ksuehring, bbross, XiangLi, fbossen, jvet@… |
Description
In S2001-vD, there is no inferred values for alf_luma_clip_idx and alf_chroma_clip_idx when they are not present.
When alf_luma_clip_flag (alf_chroma_clip_flag) is 0, alf_luma_clip_idx ( alf_chroma_clip_idx) is not present. However, AlfClipL (AlfClipC) is still calculated with undefined alf_luma_clip_idx ( alf_chroma_clip_idx) and AlfClipL (AlfClipC) is used in section 8.8.5.2(8.8.5.4).
In the semantics of alf_luma_clip_idx and alf_chroma_clip_idx, it is suggested to infer them to be equal to 0 when not present.
Change history (3)
comment:1 Changed 4 years ago by jlchen
comment:2 Changed 4 years ago by fbossen
Indeed those values should be inferred to be 0 when not present.
comment:3 Changed 4 years ago by bbross
- Resolution set to fixed
- Status changed from new to closed
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The suggestion sounds reasonable to me. Will be included in JVET-S2001-vE release.
Still keep this ticket open for a few more days for more experts to confirm.