JVET-AP0098 AHG9: On the SDI confidence map [Y. He, S. Zhao, L. Kerofsky, M. Karczewicz (Qualcomm), J. Chen, Y. Ye (Alibaba Group)]
This contribution proposes the following changes to the confidence map in TuC.
- Propose text description in the SDI SEI message extension to differentiate multiple confidence maps associated with the same layer
- Propose the confidence map resolution constraint
- Propose the confidence map sample persistence
It was suggested that a note could be added to suggest external means.
No action on item 1.
Item 2 has two proposed options. Option 1 uses resampling. Option 2 require matching picture resolutions.
Item 2 is related to JVET-AO0167, which proposes that the confidence map picture dimensions shall be less than or equal to the pic width.
It was noted that the ASAI SEI in the TuC can associate sample positions between pictures with different dimensions.
Further discussion requested how to constrain and/or associate samples between the confidence map and its associated layer.
For item 3, it was suggested that a confidence map should not persist, and it should only apply if there is a confidence map present, and when not present is undefined.
Further study if some additional clarification in the text is required to express that.
Further discussed at 1530 on Wednesday 29 April 2026 chaired by J. Boyce
v2 proposed option C of item 2 and added co-authors.
Agreed to the -v2 version.
JVET-AP0098 AHG9: On the SDI confidence map