International organisation for standardisation organisation internationale de normalisation
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- Bu səhifədəki naviqasiya:
- New EE definition
- Video Coding for Browsers
- Reconfigurable Media Coding – Video related
- HEVC
ITM developmentITM9 was issued with following new elements:
New/continuing EEs are defined in N14430, which was edited by the BoG and approved in the video plenary.
The following input documents were initially reviewed in the AHG and further during the week: 1.1.1.1.1.38m32963 Report on the possible optimization of VCB syntax structure [Seung-ho Lee, Sang-hyo Park, Minsoo Park, Euee S. Jang] The syntax change proposed in the contribution would not be compatible with existing decoders. Therefore, it would be an extension of VCB, which could be considered if it has benefit. 1.1.1.1.1.39m32964 Comments on WD3 of VCB [Sang-hyo Park, Jin Yeon Choi, Euee S. Jang] 1.1.1.1.1.40m33082 Proposed text for 14496-31 (VCB) CD [Mohamad Raad, Harald Alvestrand, Qunshan Gu, Adrian Grange] Review was performed in video on Tuesday at 14:00. It was generally assessed that the proposed text is mature enough to be progressed to CD (N14388). The following issues were commented on: The informative annex with encoder description might be considered to be removed, and maintained as a separate document. Though the style of expressing syntax is somewhat different from the rules used in AVC/HEVC, it appears to be consistent in the new version. Some elements of the decoding process are still described as procedures (e.g. the inverse transform), where it should be clarified that the way of implementation is not normatively specified, as long as the result is identical. Furthermore, it was planned to issue a first Conformance WD (N14389), and give the AHG a mandate to develop conformance testing of VCB.
Input documents presented on Wednesday 11:30: 1.1.1.1.1.41m33241 Updates on HEVC decoder status on conformance test streams [Khaled Jerbi, Damien De Saint Jorre, Mickaël Raulet, Marco Mattavelli, Daniele Renzi, Claudio Alberti] 78 of 131 bitstreams currently supported Issues: WPP, delta-QP, tiles OK now, including de-blocking on tile boundaries. Software PDAM could be by next meeting. 1.1.1.1.1.42m33242 Update on Text of ISO/IEC 23002-4:201x/PDAM2 FU and FN descriptions for HEVC [Khaled Jerbi, Damien De Saint Jorre, Mickaël Raulet, Marco Mattavelli, Daniele Renzi, Claudio Alberti] FU for delta-QP added – include in Study of DAM. 1.1.1.1.1.43m33244 HEVC decoding demo with the RVC framework [Khaled Jerbi, Hervé Yviquel, Damien de Saint Jorre, Daniel Renzi, Mickaël Raulet, Marco Mattavelli] Demonstration of an HEVC decoder within the RVC framework – Demo was shown in the MPEG plenary. Current RVC implementation is 10x slower with one core than an optimized open-source implementation (openhevc) 1.1.1.1.1.44m33349 A proposal for the definition of type synonyms for the RVC-CAL Language [Rob Stewart, Junaid Ahmad] Proposal to add new types for tokens in RVC-CAL current types are int, float, Boolean. Idea to include arrays, structures, etc. 1.1.1.1.1.45m33350 Some Issues with RVC-CAL Grammar Rules in ISO/IEC 23001-4 Third Edition [Rob Stewart, Junaid Ahmad] RVC-CAL grammar -- > corrigendum under discussion It was reported that 6 rules are not well defined. This could be addressed by a corrigendum or amendment. Can be bundled in WD, no urgent need for COR. The following output documents are produced on preparing new standard parts:
The following CEs were planned (N14398):
A DCOR (developed from a previous defect report) was issued to resolve the items of incomplete descriptors for color transfer characteristics, frame packing types amd view position (N14396).
In coordination with JCT-VC, which had met in parallel, the following HEVC-related documents were approved as WG11 outputs:
In coordination with JCT-3V, which had met in parallel, the following HEVC-related documents were approved as WG11 outputs:
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