Search Results for "JVET-M0078"
Found 4 document(s)
Search documents
Use number, keyword, author, or MPEG number. Filter by meeting when needed.
Not signed in yet.
Abstract
This contribution presents combination test results of JVET-M0077 and CE9.2.5. CE9.2.5 is an early termination method for decoder-side motion vector refinement (DMVR). JVET-M0077 is an relaxation method of block size restriction for DMVR. BD-rate gain for luma is -0.77% and decoding time is 120% compared with VTM-3.0. The decoding time is accelerated 2% by the early termination with 0.04% luma BD-rate increasing.
Loading full meeting notes...
JVET-M0078 CE9-related: Combination of JVET-M0077 and CE9.2.5 [K. Unno, K. Kawamura, S. Naito (KDDI), T. Chujoh, T. Ikai (Sharp)]
References:
Cited:
Decisions
JVET-M0078 CE9-related: Combination of JVET-M0077 and CE9.2.5 [K. Unno, K. Kawamura, S. Naito (KDDI), T. Chujoh, T. Ikai (Sharp)]
Citation
Abstract not available in document
Loading full meeting notes...
JVET-M0636 Cross-check of JVET-M0078 (CE9-related: Combination of JVET-M0077 and CE9.2.5) [Y. Kato, K. Abe, T. Toma (Panasonic)] [late]
References:
Decisions
JVET-M0636 Cross-check of JVET-M0078 (CE9-related: Combination of JVET-M0077 and CE9.2.5) [Y. Kato, K. Abe, T. Toma (Panasonic)] [late]
Citation
Abstract
The purpose of this Core Experiment (CE) is to investigate the coding tools related to neural network (NN) based loop filter on top of the Test Model. In this CE, the impact of the position of the NN based filter in the filter chain, the benefit of the CTU level NN filter adaptive on/off switching, and the generalization capability when QP is different from the training QP will be investigated. In addition to the encoder and decoder run-times, the network information, e.g., network parameter numbers, number of layers, and convolution kernel size will also be evaluated. The list of tools and experiments to be performed are detailed in this document.
Loading full meeting notes...
JVET-M1033 Description of Core Experiment 13 (CE13): Neural-network based loop filtering [Y. Li, S. Liu, K. Kawamura]
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 (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 (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:
- Tue. 19 – Wed. 27 March 2019, 14th meeting under ITU-T auspices in Geneva, CH.
- Wed. 3 – Fri. 12 July 2019, 15th meeting under WG 11 auspices in Gothenburg, SE.
- Tue. 1 – Wed. 9 October 2019, 16th meeting under ITU-T auspices in Geneva, CH.
- Wed. 8 – Fri. 17 January 2020, 17th meeting under WG 11 auspices in Brussels, BE.
The agreed document deadline for the 14th JVET meeting was planned to be Tuesday 12 March 2019. Plans for scheduling of agenda items within that meeting remained TBA.
WG 11, the local hosting organization Ecole Mohammadia d’Ingénieurs (EMI) – Mohammed V University, Rabat, Morocco, and Abdellatif Benjelloun Touimi were thanked for the excellent hosting and organization of the 13th ...
Decisions
Jian Qing Zhu (Fujitsu R&D Center)
Citation
Abstract not available in document
Loading full meeting notes...
JVET-M0858 BoG report on CE9 related decoder-side motion vector derivation contributions [S. Esenlik]
This report reviewed in Track B Wednesday 16 January 1115-1320 (chaired by JRO).
One session was held between 15:00 ~ 20:15 on January 12, 2019, for discussing 12 technical contributions in two categories, BDOF (7 contributions) and DMVR (5 contributions).
Recommended for adoption by BoG:
JVET-M0063 Non-CE9: An improvement of BDOF
Generalization of BDOF bit-depth restriction for internal bit-depths other than 10 bit.
No impact on CTC.
8-bit coding scenario: -0.32/-0.32/-0.31% change in BD-rate (Y/CB/CR)
12-bit coding scenario: -0.46/-0.03/0.08% change in BD-rate (Y/CB/CR)
From discussion in Track B: A possible reason for this behaviour might be the wrong interpretation of the gradient in case of bit depths other than 10.
It was asked if the change would still be supporting the 16 bit SIM...
Decisions
From discussion in Track B: Two aspects are considered a) subsampling in OF computation b) reduction of precision of multipliers. There is no noticeable change in decoder runtime, the benefit would be more relevant for hardware (in particular aspect b). However, in BDOF the gradient computation is less of concern in terms of complexity. The overall benefit was not clear – so this was considered not relevant for a CE.
See section 6.9.
Citation