International organisation for standardisation organisation internationale de normalisation

5.12.3MV and mode coding

5.12.3.1.1.1.1.1.1JCTVC-H0077 Non-CE9: Merge candidates pruning without reference indices [S. Fukushima, K. Arakage (JVC Kenwood)]
5.12.3.1.1.1.1.1.2JCTVC-H0365 Non-CE9: Cross-verification of merge candidates pruning without reference indices (JCTVC-H0077) [B. Li (USTC), J. Xu (Microsoft)]
5.12.3.1.1.1.1.1.3JCTVC-H0078 Non-CE9: Simplification of AMVP spatial candidate derivation [S. Fukushima, H. Nakamura, H. Takehara (JVC Kenwood)]
5.12.3.1.1.1.1.1.4JCTVC-H0340 Non-CE9: Crosscheck for JVC Kenwood simplification of AMVP spatial candidate derivation in JCTVC-H0078 [J.-L. Lin, Y.-W. Huang (MediaTek)] [late]
5.12.3.1.1.1.1.1.5JCTVC-H0091 Non-CE9: Parallel Merge Candidate Derivation for Inter_NxN partition type [Y. Jeon, B. Jeon (LG), V. Seregin, X Wang, J. Chen, M. Karczewicz (Qualcomm)]
5.12.3.1.1.1.1.1.6JCTVC-H0219 Non-CE9: Cross-check report of parallel merge candidate derivation for Inter_NxN partition type (JCTVC-H0091) by Panasonic [T. Sugio, T. Nishi (Panasonic)] [late]
5.12.3.1.1.1.1.1.7JCTVC-H0133 Non-CE9: Merge candidates pruning without TMVP [H. Takehara, K. Arakage, S. Fukushima (JVC Kenwood)]
5.12.3.1.1.1.1.1.8JCTVC-H0139 Non-CE9: Cross-verification of Merge candidates pruning without TMVP (JCTVC-H0133 from JVC Kenwood) [Y. Suzuki (NTT Docomo)]
5.12.3.1.1.1.1.1.9JCTVC-H0164 Non CE9: Removing non-scaled bi-predictive merging candidates [Y. H. Tan, C. Yeo, H. L. Tan, Z. Li (I2R)]
5.12.3.1.1.1.1.1.10JCTVC-H0216 Non-CE9: Modification of derivation process for MVP candidate in AMVP/Merge [T. Sugio, T. Nishi (Panasonic)]
5.12.3.1.1.1.1.1.11JCTVC-H0086 Non-CE9: Cross-verification of modification of derivation process for MVP candidate in AMVP/Merge (JCTVC-H0216 from Panasonic) [M.Zhou (TI)]
5.12.3.1.1.1.1.1.12JCTVC-H0239 Non-CE9: Simplification on AMVP list construction [S.-C. Lim, H. Y. Kim, J. Lee, J. S. Choi (ETRI)]
5.12.3.1.1.1.1.1.13JCTVC-H0634 Non-CE9: Cross-check report of ETRI simplification on AMVP list construction (JCTVC-H0239) by Panasonic [T. Sugio, T. Nishi (Panasonic)] [late]
5.12.3.1.1.1.1.1.14JCTVC-H0240 Non-CE9: Throughput improvement for merge/skip mode [H. Y. Kim (ETRI), K. Y. Kim, S. M. Kim, G. H. Park (KHU), S.-C. Lim, J. Lee, S. Cho, J. S. Choi (ETRI)]
5.12.3.1.1.1.1.1.15JCTVC-H0629 Non-CE9: cross-check of H0240 on throughput improvement for merge/skip mode [P. Onno (Canon)] [late]
5.12.3.1.1.1.1.1.16JCTVC-H0250 Non-CE9: Removal of non-scaled merge candidate [O. Bici, J. Lainema, K. Ugur (Nokia)]
5.12.3.1.1.1.1.1.17JCTVC-H0368 Non-CE9: Cross-check of removal of non-scaled merge candidate (JCTVC-H0250) [J. Xu (Microsoft)]
5.12.3.1.1.1.1.1.18JCTVC-H0279 Non-CE9: CU-based parallel inter mode [J.-L. Lin, Y.-W. Chen, Y.-W. Huang, S. Lei (MediaTek)]
5.12.3.1.1.1.1.1.19JCTVC-H0585 Non-CE9: cross-check of JCTVC-H0279 on CU based parallel Inter [J. Jung (Orange Labs)] [late]
5.12.3.1.1.1.1.1.20JCTVC-H0316 Non-CE9: Simplification of AMVP [L. Zhao, X. Guo, S. Lei (MediaTek), S. Ma, W. Gao (PKU), D. Zhao (HIT)]
5.12.3.1.1.1.1.1.21JCTVC-H0606 Non-CE 9: Cross-Check of H0316 on simplification of AMVP [Ankur Saxena, F. Fernandes (Samsung)] [late]
5.12.3.1.1.1.1.1.22JCTVC-H0429 Non-CE9: Moving fifth spatial MV candidate after TMVP for merge mode [V. Seregin, X. Wang, J. Chen, M. Karczewicz (Qualcomm)]
5.12.3.1.1.1.1.1.23JCTVC-H0341 Non-CE9: Crosscheck for Qualcomm merge list reordering in JCTVC-H0429 [Y.-W. Chen, Y.-W. Huang (MediaTek)] [late]
5.12.3.1.1.1.1.1.24JCTVC-H0430 Non-CE9: Single TMVP for merge mode [V. Seregin, X. Wang, J. Chen, M. Karczewicz (Qualcomm)]
5.12.3.1.1.1.1.1.25JCTVC-H0582 Non-CE9: Crosscheck of JCTVC-H0430 on single TMVP for merge mode [Y. Jeon, B. Jeon (LG)] [late]
5.12.3.1.1.1.1.1.26JCTVC-H0431 Non-CE9: Splitting contexts for MVD coding [V. Seregin, J. Chen, X. Wang, M. Karczewicz (Qualcomm)]
5.12.3.1.1.1.1.1.27JCTVC-H0640 Cross-check report on Splitting contexts for MVD coding [I.-K Kim (Samsung)] [late]
5.12.3.1.1.1.1.1.28JCTVC-H0442 Limiting Collocated Temporal Reference to One Per Picture [T. Hellman, W. Wan (Broadcom)]
5.12.3.1.1.1.1.1.29JCTVC-H0548 Signalling of collocated picture for HEVC [Y. Yu, K. Panusopone, L. Wang (Motorola Mobility)]

This contribution was reviewed in Track A (on 6 Feb.) rather than in the BoG that studied the other related contributions.

In the current working draft of HEVC, a flag, collocated_from_l0_flag, is used to explicitly indicate that the collocated picture is a picture specified in either list0 or list1. In this proposal, it was proposed to remove collocated_from_l0_flag for the low delay case because this flag was asserted to be redundant.

If ref_pic_list_combination_flag is equal to 0, the collocated_from_l0_flag would not be present in the syntax. This seemed like a low-priority case to consider for syntax optimization at this stage.

Furthermore, it was proposed to add a flag at the sequence level to indicate that only one picture's motion information (i.e. the most recent coded reference picture) is kept at any given point in the decoding process for collocated picture purposes, instead of keeping the motion information for multiple pictures as in the current working draft. This was suggested to save memory for low delay applications without any performance impact if multiple reference pictures are used. Simulation results reportedly show that there is no PSNR change for every slice while saving one bit per slice.

It was also proposed to remove the collocated_ref_idx when the SPS-level flag is true – as the collocated picture would be identified implicitly.

No semantics were supplied for the proposed syntax.

It was remarked that unless we mandate setting the SPS-level flag in some profile, decoders would be required to provision for the extra memory capacity anyway.

No action was taken on this proposal.

5.12.3.1.1.1.1.1.30JCTVC-H0695 Cross check report of Motorola Mobility proposal JCTVC-H0548 [Y. He (InterDigital)] [late 02-03]

5.12.3.1.1.1.1.1.31JCTVC-H0570 AHG14/AHG15/non-CE9: Loss robustness issue in TMVP disabling [V. Wahadaniah, C. S. Lim (Panasonic)]
5.12.3.1.1.1.1.1.32JCTVC-H0243 Simplification of spatial motion vector scaling process [I.-K Kim, J. H. Park (Samsung)]
5.12.3.1.1.1.1.1.33JCTVC-H0362 Motion prediction at entropy slice boundary [B. Li (USTC), J. Xu (Microsoft), H. Li (USTC)]
5.12.3.1.1.1.1.1.34JCTVC-H0462 Spatial Motion Vector Predictor Mismatch and Possible Unintended Behavior [B. Heng, P. Chen, W. Wan (Broadcom)]
5.12.3.1.1.1.1.1.35JCTVC-H0555 Range restriction of motion vector predictor [J. Chen, M. Coban, M. Karczewicz (Qualcomm)]