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

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.

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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