Search Results for "JVET-W0108"

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23rd Meeting: by teleconference, July 2021 2021-07-12 06:53
Abstract
Sign prediction is a part of ECM-1.0. It was found to be one of the hot spot in ECM-1.0. This contribution proposes a method to reduce the computation of sign prediction in ECM-1.0. Using ECM-1.0 as reference and the common test conditions in JVET-V2017, the BDR of the proposed method for AI/RA is x.xx%/y.yy% The encoder time for AI/RA is x.xx%/y.yy%,. The decoder time for AI/RA is x.xx%/y.yy%. Results for LB shall be added when available.
JVET-W0108 EE2-related: Low complexity sign prediction [C. Auyeung, X. Li, S. Liu (Tencent)]

Sign prediction is a part of ECM-1.0. It was found to be one of the hot spots in ECM-1.0. This contribution proposes a method to reduce the computation of sign prediction in ECM-1.0. Using ECM-1.0 as reference and the common test conditions in JVET-V2017, the BDR of the proposed method for AI/RA/LB is x.xx%/y.yy%/0.04% The encoder time for AI/RA/LB is x.xx%/y.yy%/98%,. The decoder time for AI/RA/LB is x.xx%/y.yy%/97%.

This had a rather small reduction in run time, incurring a small loss. It did not seem worthwhile to consider at this stage of the exploration.

Decisions
This had a rather small reduction in run time, incurring a small loss. It did not seem worthwhile to consider at this stage of the exploration.
Citation
23rd Meeting: by teleconference, July 2021 2021-07-14 22:14
Authors: Xiaoyu Xiu Kwai
Abstract
This document reports the crosschecking results of JVET-W0108 where a down-sampling based cost function is proposed to reduce the computational complexity of sign prediction tool in ECM-1.0. The software used for the crosschecking was provide from the proponent which is verified to be consistent with the description in JVET-W0108. All available the BD-rate points are perfectly matched with the results provided from the proponent.
JVET-W0159 Crosscheck of JVET-W0108: EE2-related: Low complexity sign prediction [X. Xiu (Kwai)] [late]
References:
JVET-W0108
Decisions
JVET-W0159 Crosscheck of JVET-W0108: EE2-related: Low complexity sign prediction [X. Xiu (Kwai)] [late]
Citation
23rd Meeting: by teleconference, July 2021 2021-09-01 06:45
Abstract
This document is draft 1 of the conformance testing specification for VVC operation range extensions, ISO/IEC 23090-3:202X 2nd Edition.
JVET-W2026 Conformance testing for VVC operation range extensions (draft 1) [D. Rusanovskyy, J.-H. Jhu, I. Moccagatta, M. Sarwer, Y. Yu] (2021-08-31)

An initial version of this document was reviewed and approved.

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 Wednesday of the first week and closing it on the Wednesday of the second week of the SG 16 meeting – a total of 8 meeting days), and
  • Otherwise meeting under ISO/IEC JTC 1/‌SC 29 auspices when its MPEG WGs meet (ordinarily starting meetings on the Friday prior to the main week of such meetings and closing it on the same day as other MPEG WGs – a total of 8 meeting days).

In cases where an exceptionally high workload is expected for a meeting, an earlier starting date may be defined. In case of online meetings, no sessions should be held on weekend days. This may imply an earlier starting date as well.

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

  • Wed. 6 – Fri. 15 October 2021, 24th meeting under ISO/IEC JTC 1/‌SC 29 auspices as a virtual meeting
  • During January 2022, 25th meeting under ITU-T SG16 auspices, location t.b.d.
  • Fri. 22 – Fri. 29 April 2022, 26th meeting under ISO/IEC JTC 1/‌SC 29 auspices in Alpbach, AT
  • Fri. 15 – Fri. 22 July 2022, 27th meeting under ISO/IEC JTC 1/‌SC 29 auspices in Cologne, DE.
  • During October 2022, 28th meeting under ITU-T SG16 auspices in Geneva, CH.
  • During January 2023, 29th ...
References:
JVET-W0188
Decisions
JVET-V2006 Additional SEI messages for VSEI (Draft 3)
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Citation
23rd Meeting: by teleconference, July 2021 2021-07-07 04:21
Abstract
This document reports the work of the JVET ad hoc group on enhanced compression beyond VVC capability (AHG12) between the 22nd meeting by teleconference, 20-28 April 2021, and the 23rd meeting by teleconference, 7-16 July 2021.
JVET-W0012 JVET AHG report: Enhanced compression beyond VVC capability (AHG12) [M. Karczewicz, Y. Ye, L. Zhang, B. Bross, X. Li, K. Naser, H. Yang] The primary activity of the AHG was the “Exploration experiment on enhanced compression beyond VVC capability” (JVET-V2024). The first indication of the achievable improvement over VVC are the results of the EE2 software base (ECM-1.0) as agreed at JVET-V meeting. The combined improvement of the ECM-1.0 over VTM-11.0 with the improved MCTF from JVET-V0056 for AI, RA and LB configurations are: All Intra Main 10 Y U V EncT DecT Class A1 -5.78% -9.67% -10.61% 219% 216% Class A2 -5.47% -7.85% -5.90% 212% 200% Class B -5.00% -7.15% -7.52% 246% 213% Class C -6.04% -7.43% -7.71% 247% 198% Class E -6.20% -7.84% -6.72% 251% 241% Overall -5.64% -7.86% -7.67% 236% 212% Class D -4.86% -5.53% -5.56% 251% 200% Class F -10.03% -11.63% -12.07% 214% 258% Clas...
Decisions
Contributions in this area were discussed in session 13 at 0840–0900 UTC on Monday 12 July 2021 (chaired by JRO).
Citation
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