International organisation for standardisation organisation internationale de normalisation

Jointly-discussed requirements-related issues

Joint discussions were held with Requirements, ITU-R SG 16 Q.6, JCT-VC, and JCT-3V at the following times:

• 
  Mon. 31 March 1600–1800
  
• 
  Tue. 1 April 1600–1800
  
• 
  Thu. 3 April 1500–1630
  

Details of these joint discussions are found in the JCT-VC and JCT-3V reports. Additional information may be recorded in the Requirements subgroup report.

10. Wednesday Video plenary status review

A Video subgroup plenary was held 11:00-12:00 on Wednesday. Documents of RVC were presented and discussed during that meeting.

Reports of BoGs were given as follows:

CDVS:

• 
  Change of SCFV to 512 models. Improvement in all bit rates except for lowest, around 0.9% increase of precision achieved overall.
  
• 
  ALP fast option and new fast indexing method (optional with some drop in performance), only applies to software
  
• 
  Conformance, Software, TR Request (separate parts of 15938) & first version of conformance WD
  
• 
  CD & DoC preparation progressing. US comment on color conversion: The input should be a monochrome / luminance image, no diffuse description of color conversion process.
  
• 
  M 33489: syntax improvements widely agreed
  

WVC:

• 
  Problem with USNB comment on normative reference to part 10 (w.r.t. SEI messages). It seemed possible that this could be resolved by including buffering period and picture timing SEI messages in part 29 or by using normative referencing.
  

VCB:

• 
  Review of CD draft was performed Tuesday, no further comments were made. It is asserted that the text is mature enough to be promoted to CD.
  
• 
  Conformance WD will be presented Thursday.
  
• 
  Patent statements to ISO secretariate can be made – it was planne to issue a resolution on this.
  

IVC:

• 
  No subjective difference was found with 16x16 deblocking, no bit rate/PSNR improvement, recommendation not including it in ITM9.
  
• 
  For Thursday plenary: ITM9 text, WD2 (including 2 new tools non-reference P and chroma interpolation), CE description, prior art doc.
  

Further issues were discussed as follows:

• 
  Meeting on editing procedures was announced Wed. 17:00 (3DG room)
  

11. Closing plenary topics

A closing plenary of the Video subgroup was held Thursday 16:00–18:00. Output docs were approved, and AHGs were established. Discussions are recorded in this section. It was confirmed that some breakout activities such as finalization in editing of documents and reporting for document approval in other subgroups could continue after the closing, and no objections were raised on this.

Detailed reports were given by the BoGs. All issues are basically reflected in the respective subsections about BoG activities above. In the context of IVC, it was confirmed that a post filter which is not falling under type-I licensing conditions should not be used in the reference implementation.

1. Output docs

During the closing plenary, the following output documents were approved by the Video subgroup:

No.	Title	TBP	Available
14386	Disposition of Comments on ISO/IEC DIS 14496-29	N	14/04/04
14387	Text of ISO/IEC FDIS 14496-29 Web Video Coding	N	14/04/18
14388	Text of ISO/IEC CD 14496-31 Video Coding for Browsers	Y	14/04/11
14389	WD of Video Coding for Browsers Conformance Testing	N	14/05/05
14390	WD 2 of ISO/IEC 15938-6:201X (2^nd edition)	Y	14/05/09
14391	Disposition of Comments on ISO/IEC CD 15938-13	N	14/04/04
14392	Text of ISO/IEC DIS 15938-13 Compact Descriptors for Visual Search	Y	14/04/18
14393	Test Model 10: Compact Descriptors for Visual Search	Y	14/05/02
14394	Core Experiment in CDVS: Conformance and Performance Testing	N	14/04/04
14395	WD2 of ISO/IEC 23001-4:201X/Amd.1 Parser Instantiation from BSD	Y	14/04/11
14396	Text of ISO/IEC 23001-8:2013/DCOR1	Y	14/04/18
14397	Study Text of ISO/IEC 23002-4:201x/DAM2 FU and FN descriptions for HEVC	Y	14/04/04
14398	Core Experiments in RVC	N	14/04/04
14428	Working Draft 2 of Internet Video Coding (IVC)	Y	14/04/18
14429	Internet Video Coding Test Model (ITM) v 9.0	Y	14/04/18
14430	Description of IVC Exploration Experiments	N	14/04/04
14431	Collection of information related to IVC technologies	N	14/04/04
14432	Response to JP NB on 14496-31 (VCB)	N	14/04/04
14433	Response to NBs on HEVC technical development	N	14/04/04
14417	Response to JP NB on Texture View Packing SEI Message	N	14/04/04

2.