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18th Meeting: Teleconference, April 2020 2020-04-23 17:15
Abstract
This is the summary report of the 360 video verification test planning side activity, Tuesday April 21 15:15 - 16:25 UTC. A list of participants can be found in Annex B of this report.
JVET-R0484 Report of 360 verification test planning side activity [V. Baroncini, J. Boyce, J.-R. Ohm, M. Wien, Y. Ye]

This contribution was presented Wed. 22 April 1625–1650.

This is the summary report of the 360 video verification test planning side activity, Tuesday April 21 15:15 – 16:25 UTC.

It was agreed to use 5 360 video sequences in the formal verification tests.

When doing initial simulations, it was agreed to use more sequences, and plot their R-D performance to get quality and rate range behaviour of each sequence.

SDR used QP 26-46, step size of 4 for VVC, and QP 26-46, step size of 1 for HEVC

It was agreed to use the same QP settings for 360 content in the preliminary round of simulations.

It was suggested that, after preliminary encoding is done, perform preliminary viewing of the content, and suggest viewports (one static and one dynamic).

It was commented that once bitstreams are available, generating viewport images is relatively easy.

It was agreed to separate encoding and viewport selection/generation into different tasks, with possibly different volunteers.

It was commented that SDR bitstreams have two settings, one ALF on and the other with ALF off.

It was agreed that we will keep ALF on for 360 video encoding in the preliminary round of simulations.

VVC CfP used dynamic viewports with 78.1×49.1 degrees of FOV and a resolution of 1920×1080.

It was asked if we consider HMD viewing, and commented that with HMD viewing, the same problem that we had before with people watching different content still exists. So HMD viewing may not be suitable.

It was...

Decisions
It is also asked if any HDR-based 360 test material would be available. This was not known.
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 2020-04-22 10:59
Abstract
This is a summary report of the HDR video verification test planning side activity. The activity took place during the 18th JVET meeting and included a teleconference on Tuesday April 21 16:30 - 17:30 UTC.
JVET-R0487 Report of HDR verification test planning side activity [A. Segall, M. Wien]

Presented Wed 22, 1650-1710

This is a summary report of the HDR video verification test planning side activity. The activity took place during the 18th JVET meeting and included a teleconference on Tuesday April 21 16:30 – 17:30 UTC.

The group considered if the HDR verification process should be aligned with the SDR verification process.

It was commented that the SDR verification process is currently targeting completion by October. Additionally, it was explained that the SDR schedule includes completing a dry run in July.

It was commented by one participant that it would be beneficial to have the HDR testing done sooner rather than later.

It was further suggested that the group should attempt to align with the SDR schedule. However, it was also commented that it was currently unclear if this could be accomplished given current local limitations and its impact on accessing display equipment.

The group agreed to align with the SDR schedule as a working direction, with an understanding that the work plan should include re-evaluating the schedule after initial testing.

The group considered if there is additional content that is available and could provide additional candidates for vierfication testing.

It was suggested by one participant that an initial target of 9-10 sequences would be ideal.

It was suggested by another participant to include an equal mixure of PQ and HLG content.

It was commented that JVET-E0121 provides som analysis of existing content that was not included in the...

Decisions
Coding studies and tools on specific use cases (2)
Citation
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