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JVET AHG report: SEI message studies (AHG9)
Abstract
This document summarizes the activity of AHG9 (SEI message studies) between the 30th JVET Meeting (Antalya, TR, 21–28 April 2023) and the 31st JVET Meeting (Geneva, CH, 11–19 July 2023).
JVET-AE0009 JVET AHG report: SEI message studies (AHG9) [S. McCarthy, Y.-K. Wang (co-chairs), T. Chujoh, S. Deshpande, C. Fogg, Hendry, P. de Lagrange, G. J. Sullivan, A. Tourapis, S. Wenger (vice-chairs)]
Related contributions
A total of 42 contributions and 1 bug report were identified relating to the mandates of AHG9. Some contributions also relate to the work of AHG2 and AHG8.
The number of contributions relating to each AHG9 mandate is as follows
- 31 contributions relate to the mandate to study the SEI messages in VSEI, VVC, HEVC, and AVC. 2 of the 31 contributions relate to more than one SEI message.
- 28 contributions relate to the neural-network post-filter SEI messages, including 1 summary of proposals on NNPF SEI messages.
- 1 contribution relates to the annotated region SEI message
- 2 contribution relates to the post filter hint SEI message
- 1 contribution relates to the phase indication SEI message
- 1 contribution relates to the SEI processing order SEI message
- 1 contribution relates to the mandate to collect software and showcase information for SEI messages;
- 10 contributions relate to the mandate to identify potential needs for additional SEI messages.
- 2 contributions relate to human/machine viewing
- 1 contribution relates to multiplane image information
- 2 contributions relate to alternative picture timing
- 3 contributions relate to generative face video
- 1 contribution relates to object masking information
- 1 contribution relates to object-wave compression and computer-generated hologram use
- 1 bug report relates to the mandate to coordinate with AHG3 for software support of SEI messages
The following is a list of contributions related to the mandates of AHG9.
Study the SEI messages in VSEI, VVC, HEVC and AVC
Neural-network post filter characteristics and activation SEI messages
Summary of proposals on NNPF SEI messages
JVET-AE0187 AHG9: A summary of SEI proposals on NNPF [Y.-K. Wang (Bytedance)]
Proposals on NNPF SEI messages
Decisions
The AHG recommended to:
Review all related contributions; and
Continue SEI messages studies.
It was agreed that no technical aspects regarding new functionality should be added to the NNPF SEI message for v3; the main focus was on bug fixes. In terms of purpose, no new items should be added to v3, as long as extensibility is possible.
A BoG on VSEI V3 aspects and VVC V3 SEI message aspects was established (coordinated by G. Sullivan), to meet from Tuesday afternoon. The BoG was also requested to sort out which proposals in the NNPF category would rather be candidates for a future version.
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