Joint Collaborative Team on Video Coding (jct-vc) of itu-t sg16 wp3 and iso/iec jtc1/SC29/WG11

3Project development, status, and guidance (23)

3.1Communication to and by parent bodies (0)

See section 8.1.

3.2Conformance test set development (1)

JCTVC-Q0219 Editor's proposed draft text of HEVC conformance testing [T. . Suzuki, W. . Wan, G. . Sullivan] [late]

3.3Version 1 bug reports and cleanup (1)

JCTVC-Q0111 Errata report: Parsing issue for picture timing SEI message [Y. . Wu, L. . Zhu, G. . J. . Sullivan, F. . Kyslov, S. . Sadhwani (Microsoft)]

3.4HEVC coding performance, implementation demonstrations and design analysis (6)

3.4.1Version 1 verification test (1)

JCTVC-Q0204 HEVC verification test results [T. K. . Tan (NTT Docomo), M. . Mrak (BBC), V. . Baroncini (FUB), N. . Ramzan (UWS)] [miss]

3.4.2Still picture coding (1)

JCTVC-Q0229 HEVC still picture coding performance evaluation [Didier D. Nicholson, Chaker C. Larabi, Antonin A. Descampe] [late]

3.4.3SHVC performance and design aspects (2)

JCTVC-Q0046 Complexity analysis of an optimized SHVC decoder [W. . Hamidouche, M. . Raulet, O. . Deforges (INSA)]

Presentation requested prior to Wed.

JCTVC-Q0050 4K real time streaming with SHVC decoder and GPAC player [W. . Hamidouche, M. . Raulet, J. . Le  Feuvre (INSA)]

3.4.4Interlace (2)

JCTVC-Q0117 Extension of the pic_struct element in HEVC [A. . Tourapis, D. . Singer, A. . Duenas, G. . Martin-Cocher] [late]
JCTVC-Q0118 Interlace coding in HEVC v.1 [A. . Tourapis, D. . Singer (Apple)]

3.4.5Implementation demonstrations (0)

3.5Profile and level definitions (requirements related) (7)

3.5.1General (1)

JCTVC-Q0089 Profiles [C. . Fogg, J. . Helman (Movielabs)]

3.5.2RExt profiles and levels (5)

JCTVC-Q0051 AHG5: Recommended profiling of range extension coding tools [S. . Lee, C. . Park, E. . Alshina, C. . Kim (Samsung), K. . McCann (Zetacast)]
JCTVC-Q0113 Request for an HEVC 4:4:4 8 bit profile [G. . Martin-Cocher, P. . Onno, C. . Rosewarne, A. . Fuldseth, R. . Sjöberg, A. . Duenas, J. . Sole, M. . Karczewicz, M. . Budagavi]
JCTVC-Q0133 Comments on HEVC 4:4:4 8 bit profiles [A. . Tourapis, D. . Singer (Apple)]
JCTVC-Q0186 AHG5: Super-high Tier Specification Targeted at the Intra 16-bit 4:4:4 Profile [K. . Sharman, N. . Saunders, J. . Gamei, T. . Suzuki, A. . Tabatabai (Sony)] [late]
JCTVC-Q0212 AHG5: Objective and subjective evaluations of cross-component decorrelation in RExt6.0 for range extensions profile [K. . Kawamura, S. . Naito (KDDI)] [late]

3.5.3SHVC profiles and levels (3)

JCTVC-Q0145 MV-HEVC/SHVC HLS: On level definitions [Y.-K. Wang, K. . Rapaka, J. . Chen, Hendry, A. . K. . Ramasubramonian (Qualcomm)]
JCTVC-Q0103 MV-HEVC/SHVC HLS: On DPB Profile Level Limits [S. . Deshpande (Sharp)]
JCTVC-Q0206 Proposal to support 12 bit video in SHVC [T. . Suzuki (Sony)] [late]

3.6HEVC, SHVC and RExt use cases (requirements related) (4)

JCTVC-Q0085 HDR/WCG workflow [B. . Mandel (Universal)]
JCTVC-Q0190 Evaluation of distortion metrics on HDR video content [E. . François, P. . Lopez, F. . Le  Léannec, S. . Lasserre (Technicolor)] [late]
JCTVC-Q0191 New HDR video coding results [E. . François, S. . Lasserre, F. . Le  Léannec (Technicolor)] [late]
JCTVC-Q0192 Insights and open questions on HDR/WCG video coding [D. . Singer, A. . Tourapis] [late]

3.7Source video test material (3)

JCTVC-Q0087 Technicolor clip results [B. . Mandel (Universal), C. . Fogg, J. . Helman (Movielabs)] [late] [miss]
JCTVC-Q0088 StEM and Telescope HDR/WCG test sequences [J. . Helman, C. . Fogg (Movielabs)]
JCTVC-Q0228 DCI StEM Content Description [??(??)] [late] [miss]

4Core experiment in SHVC (10)

4.1SCE1: Colour gamut and bit depth scalability (10)

4.1.1SCE1 summary and general discussion (1)

JCTVC-Q0021 SCE1: Summary Report of Colour Gamut and Bit Depth Scalability [P. . Andrivon, A. . Duenas, E. . Alshina, Y. . Ye, K. . Ugur, X. . Li]

Discussed 2nd day p.m. (GJS).

TBA.

Basically two groups of proposals.

• 
  1.1, 1.2, 1.3, 1.4 = various gain/offset models
  
• 
  2.1, 2.2 = 3D LUT mapping 8x2x2 – 8 uniform segments for luma, and 2 uniform segments for each color channel, (a, b, c, d)  Y' = a_Y * Y + b_Y * U + c_Y * V + d_Y, U' = a_U * Y + b_U * U + c_U * V + d_U, V' = a_V * Y + b_V * U + c_V * V + d_V.
  

1.1 and 1.3 have thousands of table entries, which is generally agreed to be excessive.

1.4 requires a lot of computations and does not have great performance.

1.2 does not have significant performance benefit relative to the anchor.

2.1 and 2.2 have 384 bytes of table data each, and not too much computational load, and operate in the lower-resolution domain. For each, a table would be sent in PPS and optionally updated in SH. It was asserted that the table content would be unlikely to be totally stable within a CVS of significant length. There was discussion of whether slice-level update is necessary or not – likely not.

It was suggested that the 2.x proposals each contain a combination of techniques, and that some of the elements of these (esp. entropy coding part) may not be necessary/justified.

The difference between 2.1 and 2.2 is the use of spatial phase positioning alignment for chroma in 2.1, based on the assumption of the default positioning of the chroma samples. The gain for this is in the 0.31–1.0% range. The overall gain is 6–10%.

Tentative decision: The overall suggested conclusion is that a 2.x approach or something close to it would not be overly burdensome to include and has adequate gain to justify its complexity.

But it is for a particular application space, so should it be in a "generic" scalable profile for all profiles with a certain bit depth capability, or should it have its own profile?

Between 2.1 and 2.2, the gain difference is about 0.6%, with some extra complexity associated with the alignment adjustment due to look-ahead aspect of the position adjustment processing. Mixed opinions here.

A non-CE proposal Q0129 is trying to find a new trade-off.

Five sequences; two color grades each, different resolutions, two bit depths for BT.709.

Gain roughly 8% relative to WP for the highest-performing methods, 3% for the lowest-performing (1.2).

4.1.2SCE1 primary contributions (2)

JCTVC-Q0048 SCE1: Color gamut scalability with asymmetric 3D LUT [X. . Li, J. . Chen, M. . Karczewicz (Qualcomm), Y. . He, Y. . Ye, J. . Dong (InterDigital), P. . Bordes, P. . Andrivon, E. . Francois, F. . Hiron (Technicolor)]
JCTVC-Q0072 SCE1: Color gamut scalability using gain-offset models [A. . Aminlou, K.  Ugur, M. . M. . Hannuksela (Nokia)]

4.1.3SCE1 cross checks (7)

JCTVC-Q0059 SCE1: Cross-check of JCTVC-Q0048 [A. . Aminlou, K. . Ugur (Nokia)]
JCTVC-Q0097 SCE1: Crosscheck report on color gamut scalability using gain-offset models (JCTVC-0072) [X. . Li (Qualcomm)] [late]
JCTVC-Q0123 SCE1: Crosscheck for Color gamut scalability using gain-offset models (JCTVC-0072) Test 2 [K. . Minoo (Arris)] [late]
JCTVC-Q0143 Crosscheck report of SCE1 test on color gamut scalability using 8x8x8 regions and matrix mapping (JCTVC-Q0072) [K. . Misra (Sharp)] [late]
JCTVC-Q0144 Crosscheck report of SCE1 test on asymmetric 3D-LUT with phase alignment filter disabled (JCTVC-Q0048) [K. . Misra (Sharp)] [late]
JCTVC-Q0196 SCE1: Crosscheck result of Test 1.3 [K. . Sato (Sony)] [late]
JCTVC-Q0222 SCE1: Cross-check of 3D-LUT parameter coding of JCTVC-Q0048 [K. . Ugur, A. . Aminlou (Nokia)] [late]