Opened 6 years ago
Closed 5 years ago
#309 closed defect (fixed)
APS with same ID referenced from different slices
| Reported by: | ksuehring | Owned by: | |
|---|---|---|---|
| Priority: | minor | Milestone: | |
| Component: | spec | Version: | VVC D5 v10 |
| Keywords: | Cc: | ksuehring, XiangLi, fbossen, jvet@… |
Description
The slice header sematics have the following constraints:
When multiple ALF APSs with the same value of adaptation_parameter_set_id are referred to by two or more slices of the same picture, the multiple ALF APSs with the same value of adaptation_parameter_set_id shall have the same content.
and
When multiple LMCS APSs with the same value of adaptation_parameter_set_id are referred to by two or more slices of the same picture, the multiple LMCS APSs with the same value of adaptation_parameter_set_id shall have the same content.
On the other hand, the semantics of adaptation_parameter_set_id contains a note:
adaptation_parameter_set_id provides an identifier for the APS for reference by other syntax elements.
NOTE – APSs can be shared across pictures and can be different in different slices within a picture.
I think the first two (normative) references contain the design intent. The note should be corrected accordingly.
Change history (5)
comment:1 Changed 6 years ago by ksuehring
- Component changed from VTM to spec
comment:2 Changed 6 years ago by bbross
- Version changed from VVC D5 v7 to VVC D5 v8
comment:3 Changed 5 years ago by bbross
- Version changed from VVC D5 v8 to VVC D5 v9
comment:4 Changed 5 years ago by bbross
- Version changed from VVC D5 v9 to VVC D5 v10
comment:5 Changed 5 years ago by bbross
- Resolution set to fixed
- Status changed from new to closed
Fixed in D6 vC