Search Results for "JVET-P0324"

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16th Meeting: Geneva, October 2019 2019-09-24 16:21
Abstract
This contribution proposes to change quantization matrix selection for rectangular transform blocks, so that it is based on block area instead of block maximal dimension. This is said to be consistent with other parts of VVC like quantization groups, DMVR, BCW, and expected to derive QMs of rectangular blocks more likely from square-sized QMs.
JVET-P0324 AHG15: Quantization matrix selection based on block area [P. de Lagrange, P. Bordes, K. Naser, E. François (InterDigital)]

This contribution proposes to change quantization matrix selection for rectangular transform blocks, so that it is based on block area instead of block maximal dimension. This is said to be consistent with other parts of VVC like quantization groups, DMVR, BCW, and expected to derive QMs of rectangular blocks more likely from square-sized QMs.

Currently, the spec determines the matrix for non-square blocks from the maximum dimension. The proposal is to use the log-average of the two sizes. It is not proven that this would have benefit.

The simplifications of the spec text are purely editorial.

PATENTS:
EP3624449A1 1.00 2020-03-18 US11812021B2 1.00 2023-11-07 EP3711298B1 0.87 2025-09-03 US20170171565A1 0.34 2017-06-15 KR20190120337A 0.30 2019-10-23 WO2024015638A2 0.28 2024-01-18 US8073048B2 0.26 2011-12-06 EP4591215A1 0.24 2025-07-30
Decisions
The simplifications of the spec text are purely editorial.
Citation
17th Meeting: Brussels, January 2020 2020-01-10 09:23
Authors: G. Li Tencent Guichun Li
Abstract
This document reports the crosscheck results for JVET-Q0324 "Simplification of MV derivation for affine chroma". The software was studied, and the implementation is as described in JVET-P0324. The simulation results match with the results provided by the proponent.
JVET-Q0659 Crosscheck of JVET-Q0324 "Simplification of MV derivation for affine chroma" [G. Li (Tencent)] [late]
Decisions
JVET-Q0659 Crosscheck of JVET-Q0324 "Simplification of MV derivation for affine chroma" [G. Li (Tencent)] [late]
Citation
16th Meeting: Geneva, October 2019 2019-11-05 21:43
Authors: C.-Y. Chen Andrew Segall Jens-Rainer Ohm
Abstract
The goal of this Core Experiment (CE) is to improve and/or enhance cross component loop filtering (CC-ALF) techniques. These CC-ALF techniques will be evaluated according to both subjective and objective metrics.
JVET-P2025 Description of Core Experiment 5 (CE5): Cross-component adaptive loop filtering [C.-Y. Chen, A. Segall]

See track A notes under JVET-P1033 about what to test.

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 Tuesday 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. For the upcoming meeting in October 2019, the SG16 parent-level meeting dates had been shifted after the JVET and MPEG meeting plans were established, which has caused an additional adjustment in the JVET dates.

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

  • Tue. 7 – Fri. 17 January 2020, 17th meeting under WG 11 auspices in Brussels, BE.
  • Wed. 15 – Fri. 24 April 2020, 18th meeting under WG 11 auspices in Alpbach, AT.
  • Tue. 23 June – Wed. 1 July 2020, 19th meeting under ITU-T auspices in Geneva, CH.
  • Wed. 7 – Fri. 16 October 2020, 20th meeting under WG 11 auspices in Rennes, FR.

The agreed document deadline for the 17thJVET meeting was planned to be Tuesday 31 December...

Decisions
Tianyang Zhou (Sharp Corporation)
Citation
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