International organisation for standardisation organisation internationale de normalisation

3DV standards development (incl. software, conformance) (0)

1. 3D-AVC (0)

No particular actions noted.

2. MV-HEVC (0)

During the joint meeting of JCT-VC and JCT-3V Sun. 2 p.m. it was decided that for progression of RExt and MV-HEVC the documents should not be balloted separately as FDAMs in April, but rather they should be integrated into a new edition for ballot after the July meeting. This would allow consistent alignment.

3. 3D-HEVC (0)

No particular actions noted.

6. High-level syntax (50)

   1. MV-HEVC/3D-HEVC (3)

14.1.1.1.1.1.1.1.89JCT3V-G0048 3D-HEVC HLS: On inter-component reference pictures [Y.-L. Chang, Y.-W. Chen, J.-L. Lin, Y.-P. Tsai, S. Lei (MediaTek)]

In the current 3D-HEVC, the depth oriented coding tools – depth oriented neighboring block disparity vector (DoNBDV), view synthesis prediction (VSP) and motion parameter inheritance (MPI) – all need to access a picture in other component (e.g. texture picture refers to depth picture) to derive a sample array or predictors. It is assumed that the reference pictures of the other component can be found and accessed by default. However, the reference picture of the other component is implicitly used in the 3D-HTM but not clearly defined in the working draft text. The availability and location of the reference picture of the other component are not described for 3D-HEVC. It is proposed to derive an inter-component reference picture set and use the inter-component reference picture set to indicate the availability and the location of the inter-component reference picture in this contribution.

Discussion: Texture and depth are in same access unit, therefore the availability is not a problem. The suggested inter component reference picture set might only be useful when several depth maps would be associated with one texture, or several texture views would be associated with one depth map. The later case could hypothetically apply when scalable texture coding would be combined with non-scalable depth coding. This currently not under consideration, and could probably resolved when needed.

No action.

14.1.1.1.1.1.1.1.90JCT3V-G0053 3D-HEVC HLS: On ARP reference picture signalling [J.-L. Lin, Y.-W. Chen, Y.-L. Chang, Y.-W. Huang, S. Lei (MediaTek)]

In advanced residual prediction (ARP), the first temporal reference picture in the reference picture list is selected as the reference picture of the corresponding block in the reference view. A change of reference list reordering between slides in a same picture could cause the reference picture of the reference view to change. Frequently changing the reference picture for ARP will break the hardware pipeline design and causes a burden for decoders due to the DRAM access limitations. This contribution simply proposes to prohibit changes to the reference picture for ARP within a picture. An additional benefit of more flexibility in the reference picture selection for ARP is also provided.

Discussion: Solution 2 would be preferred, allowing only the picture with smallest POC distance to current picture in case of ARP.

Does not influence CTC.

Decision: Adopt. Some editorial improvements of WD text worked out with Y. Chen.

14.1.1.1.1.1.1.1.91JCT3V-G0129 AHG5: Comments on default NBDV view selection and ARP target reference picture [Y. Chen, L. Zhang (Qualcomm)]

This document contributes 1) a clean-up for the derivation of default reference view order index; 2) a bug fix for the derivation process of target reference index for ARP.

No agreement on first aspect.

Decision (BF): Adopt second aspect.

2.