JVET-K0565 Draft text for affine motion compensation [H. Yang, H. Chen, Y. Zhao, J. Chen (Huawei)] [late]

Draft text was provided and reviewed Tue 17 1545.

Suggestions made during discussion:

• High level enabling flag at SPS as already in software is missing (PPS or slice needs further consideration)
• Put into SPS 2 flags (1 for affine enabling, 1 for 6-parameter enabling)
• All affine operations and syntax should be disabled by the first flag
• All affine operations and syntax related to 6-parameter should be disabled by the second flag

It was generally remarked that the text was appropriate and complete, but needs more detailed investigation in the context of integration by editors.

For editors of draft text:

• Some alignment of subblock syntax with ATMVP would be necessary
• An implication of adopting affine and ATMVP requires also transferring some additional elements from HEVC, such as merge, MV prediction, MV difference coding
• What is further needed for affine, is the 1/16 sample precision interpolation filters. Otherwise, the MC process of HEVC can be retained for subblocks. Rounding to 1/4 pel also needs to be described

8x8 MV compression requires action. Storage to be done with high (1/16 pel) precision. Note: It should be further studied whether high precision is necessary.

JVET-L0002 JVET AHG report: Draft text and test model algorithm description editing (AHG2) [B. Bross, J. Chen, J. Boyce, S. Kim, S. Liu, Y. Ye]

This document reports the work of the JVET ad hoc group on draft text and test model algorithm description editing (AHG2) between the 11th meeting in Ljubljana, SI (10–18 July 2018) and the 12th meeting in Macao, CN (3–12 October 2018).

The first draft of Versatile Video Coding (VVC D1) includes a quadtree with nested multi-type tree using binary and ternary splits coding block structure as the initial new coding feature of VVC. At the 11^th JVET meeting, it was decided to include more coding features for intra picture-prediction, inter-picture prediction, transform coefficient coding, transform, adaptive loop filtering and a starting basis for high-level syntax in the second draft of Versatile Video Coding (VVC D2) and the VVC Test Model 2 (VTM2) encoding. Draft reference software to implement the VVC decoding process and VTM2 encoding method has also been developed.

The normative decoding process for Versatile Video Coding is specified in the VVC draft 2 text specification document. The VVC Test Model 2 (VTM 2) Algorithm and Encoder Description document provides an algorithm description as well as an encoder-side description of the VVC Test Model 2, which serves as a tutorial for the algorithm and encoding model implemented in the VTM2.0 software.

An issue tracker (https://jvet.hhi.fraunhofer.de/trac/vvc) was used to facilitate the reporting of errata with the VVC documents.

Seven versions of JVET-K1001 were published by the...

JVET-K1035 Description of Core Experiment 15 (CE15): Palette mode [Y.-C. Sun, Y. H. Chao, X. Xu]

Discussion Tuesday morning Track B (JRO):

• Investigate the palette variant proposed in JVET-K0411 and HEVC-SCC palette mode
• Investigate interrelationship with CPR
• Study the complexity impact of the two palette variants and CPR (in coordination with CE8)

(Initial version presented Wednesday 1430 (GJS & JRO.)

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 or Wednesday of the first week and closing it on the Tuesday or Wednesday of the second week of the SG 16 meeting – a total of 6–7.5 meeting days), and
• Otherwise meeting under ISO/IEC JTC 1/SC 29/WG 11 auspices when it meets (starting meetings on the Wednesday or Thursday prior to such meetings and closing it on the last day of the WG 11 meeting – a total of 8.5 meeting days).

In cases where 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:

• Wed. 3 – Fri. 12 Oct. 2018, 12^th meeting under WG 11 auspices in Macao, CN.
• Wed. 9 – Fri. 18 January 2019, 13^th meeting under WG11 auspices in Marrakesh, MA.
• Tue. 19 – Wed. 27 March 2019, 14^th meeting under ITU-T auspices in Geneva, CH.
• Wed. 3 – Fri. 12 July 2019, 15^th meeting under WG11 auspices in Gothenburg, SE.

The agreed document deadline for the 12^th JVET meeting was agreed to be Monday 24 September...