Search Results for "JVET-R0124"

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18th Meeting: Teleconference, April 2020 2020-04-07 00:04
Abstract
In this contribution, the following modifications on syntax and semantics related to picture header are proposed:
JVET-R0124 AHG9: Clean-ups on picture header [B. Choi, S. Wenger, S. Liu (Tencent)]

Items 1 and 2 of this contribution belong to this category.

Picture header and slice header (13)

JVET-R0124 AHG9: Clean-ups on picture header [B. Choi, S. Wenger, S. Liu (Tencent)]

Item 3 of this contribution belongs to this category.

RPL, WP, and collocated picture signalling (11)

Discussion began here for Track A on 18 April at 1300 UTC (chaired by GJS, YKW).

References:
JVET-Q2001
PATENTS:
US20230133338A1 0.34 2023-05-04 US20250343948A1 0.32 2025-11-06 US11758165B2 0.30 2023-09-12 US20220303558A1 0.28 2022-09-22 US11412256B2 0.26 2022-08-09 SG11202111934TA 0.24 2021-12-30 WO2021236610A1 0.22 2021-11-25 US20230032818A1 0.20 2023-02-02
Decisions
Picture header and slice header (13)
Discussion began here for Track A on 18 April at 1300 UTC (chaired by GJS, YKW).
Citation
18th Meeting: Teleconference, April 2020 2020-05-17 19:13
Abstract
This document provides general summary information about typical quality measurement practices for video coding experiments in recent work in MPEG and VCEG and their JVET and JCT-VC joint teams. In particular, it describes the use of Bjøntegaard Delta rate (BD-rate) measurements. It aims at providing a concept-level overview of recent practices and to provide some references to technical papers that describe further details. It provides comments on why some of the choices were made and points at situations where caution must be taken when interpreting the results. Revision marks are shown relative to the January 2020 output document, JVET-Q2016-v4.
JVET-R2016 Summary information on BD-rate experiment evaluation practices [K. Andersson, F. Bossen, J.-R. Ohm, A. Segall, R. Sjöberg, J. Ström, G. J. Sullivan, A. Tourapis] (2020-05-15)

Minor refinements of the description were planned.

Future meeting plans, expressions of thanks, and closing of the meeting

Future meeting plans were established according to the following guidelines:

  • Meeting under ITU-T SG 16 auspices when it meets (ordinarily starting meetings on the Tuesday of the first week and closing it on the Wednesday of the second week of the SG 16 meeting – a total of 9 meeting days), and
  • Otherwise meeting under ISO/IEC JTC 1/SC 29/WG 11 auspices when it meets (ordinarily starting meetings on the Wednesday prior to such meetings and closing it at lunchtime on the last day of the WG 11 meeting – a total of 9.5 meeting days).

In cases where an exceptionally high workload is expected for a meeting, an earlier starting date may be defined.

Some specific future meeting plans (to be confirmed) were established as follows:

  • Mon. 22 June – Wed. 1 July 2020, 19th meeting under ITU-T auspices conducted by teleconference.
  • Wed. 7 – Fri. 16 October 2020, 20th meeting under WG 11 auspices in Rennes, FR.
  • Wed. 6 – Fri. 15 January 2021, 21st meeting under WG 11 auspices in Capetown, ZA.
  • Tue. 20 – Wed. 28 April 2021, 22nd meeting under ITU-T auspices in Geneva, CH.

The agreed document deadline for the 19th JVET meeting was planned to be Wednesday 10 June 2020 (earlier than usual).

Vittorio Baroncini, Andrew Segall, Mathias Wien, and Yan Ye were thanked for their efforts in further...

Decisions
Tianyang Zhou (Sharp)
Citation
18th Meeting: Teleconference, April 2020 2020-04-17 17:06
Authors: G. Li Tencent Guichun Li
Abstract
This document reports the crosscheck results for JVET-R0328 "AHG 10: ALF and CCALF encoder parallel design". The software was studied, and the implementation is as described in JVET-R0328. The simulation results match with the results provided by the proponent.
JVET-R0465 Crosscheck of JVET-R0328 (AHG 10: ALF and CCALF encoder parallel design) [G. Li (Tencent)] [late]

Metrics and evaluation criteria (0)

No contributions on this topic were noted.

Plenary meetings, joint meetings, BoG reports, and summary of actions taken

High-level syntax / systems relation meeting

This previously planned coordination session was cancelled due to a lack of identified need.

Plenary meeting Sunday 19 April 1300-1500

Reports of the tracks were presented as follows:

The status of Tracks A and B was presented and discussed, which particularly included the following aspects:

Track A:

Status of HLS review:

By the end of April 18, 2020, the meetings had reviewed approximately 172 (70%) of the 254 contributions, which resulted in 65 recommendations/adoptions for normative action, 26 recommendations/adoptions for editorial action, and 25 revisits.

  1. 6.1.1 Combinations of subpictures and other features (3/3): 1 recommendation, 2 revisits
  2. (done) 6.1.2.1 Chroma deblocking tc and β offsets signalling (13/13), 2 recommendations
  3. 6.1.2.2 Deblocking control signalling - other aspects (4/5): 2 recommendations, 1 TBP
  4. 6.1.2.3 Quantization control signalling (6/6): 1 adoption, 1 revisit
  5. (assigned to 4/21 #3) 6.1.2.4 High-level control of features that use APSs: LMCS, scaling lists, and ALF (17/21): 12 recommendations/adoptions, 1 revisit, 4 TBP.
  6. (assigned to 4/19 #3, 4/21 #3) 6.1.2.5 High level control of other tools (0/13): 13 TBP
  7. 6.1.3 General and misc. HLS topics (6/9): 3 recommendations/adoptions, 3 revisits, 3 TBP
  8. (assigned to 4/22 #1) 6.1.4 Profile, tier, level (PTL)...
Decisions
It was reminded that in cases where the JVET document is also made available as MPEG output document, a separate version under the MPEG document header should be generated. This version should be sent to GJS and JRO for upload.
Citation
18th Meeting: Teleconference, April 2020 2020-04-12 11:54
Abstract
This contribution intends to provide a summary of the 13 proposals on syntax for one slice per picture submitted to this JVET meeting.
JVET-R0406 AHG9: A summary of proposals on syntax for one slice per picture [Y.-K. Wang (Bytedance)] Discussion began here for AHG Session 1.14 on Monday 13 April at 0500 UTC (chaired by GJS & YKW). This contribution intends to provide a summary of the 13 proposals on syntax for one slice per picture submitted to this JVET meeting. It is suggested that this summary, in terms of a list of design questions, is used for the reviewing of these proposals, such that the discussions can be in a more structured and efficient manner. Add an SPS flag sps_one_slice_per_picture_flag (or a different name with the same semantics: sps_picture_header_in_slice_header_flag). (JVET-R0060, JVET-R0118) When sps_one_slice_per_picture_flag is equal to 1, skip the signalling of sps_num_subpics_minus1 and sps_independent_subpics_flag and infer the values. (JVET-R0060) When sps_one_slice_per_picture_flag is equal...
Decisions
See also item 4).
Citation
18th Meeting: Teleconference, April 2020 2020-04-12 04:09
Abstract
This contribution provides a summary of the 10 proposals on mixed NAL unit types within a coded picture (the agenda item 4.1.9 in JVET-R0339).
JVET-R0414 AHG9: A summary of proposals on mixed NAL unit types within a coded picture [Y.-K. Wang (Bytedance)] This contribution provides a summary of the 10 proposals on mixed NAL unit types within a coded picture. It is suggested that this summary, in terms of a list of design questions, is used for the reviewing of these proposals, such that the discussions can be in a more structured and more efficient manner. On the types of pictures with mixed NUTs and naming of NUTs: Don't define types of pictures with mixed NUTs, define subpicture types (one corresponding to each picture type) instead. (JVET-R0042) In addition, change the naming of the content of VCL NUTs as follows: Name of nal_unit_type Content of NAL unit and RBSP syntax structure NAL unittype class TRAIL_NUT Coded slice of a trailing picture or subpicture*slice_layer_rbsp( ) VCL STSA_NUT Coded slice of an STSA picture or sub...
Decisions
Discussion stopped here for JVET Track A Monday 20 April at 1605 UTC (chaired by GJS).
Citation
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