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14th Meeting: Geneva, March 2019 2019-03-19 00:50
AHG16/Non-CE3: Simplification on Intra sub-partition coding mode
Authors: Biao Wang Huawei Anand Meher Kotra Huawei S. Esenlik Huawei Han Gao Huawei Jie Chen Huawei
Abstract
Intra sub-partition (ISP) coding mode can result into 1xN (N>=16) or 2xM (M>=8) sub-partitions. These shapes can lead to inefficient memory access. This contribution provides two alternative restrictions. The first alternative prohibits the partitions that could result into 1xN and 2xM sub-partitions. The second alternative prohibits only the partitions that could result into 1xN sub-partitions. The two restrictions makes memory access more efficient for processing ISP sub-partitions. Compared to VTM4.0 with all intra configuration, the first alternative brings 0.13% coding loss and the encoding and decoding time is reduced to 99%. The second alternative has a 0.03% coding loss and the encoding time is reduced to 99%.
Meeting Notes
JVET-N0186 CE3-related: Simplification on Intra sub-partition coding mode [B. Wang, A. M. Kotra, S. Esenlik, H. Gao, J. Chen (Huawei)]
References:
JVET-M1010
Cited:
JVET-N0728 X JVET-N0838 JVET-N1023 X
PATENTS:
US9066158B2 0.34 2015-06-23 AU2024200359B2 0.32 2025-12-18 WO2018228281A1 0.30 2018-12-20 CN103918262B 0.28 2017-11-10 EP2727356A2 0.26 2014-05-07 US12395660B2 0.24 2025-08-19 CN117440164A 0.22 2024-01-23 EP4032293B1 0.20 2024-07-31
ARCHIVE v2 :
JVET-N0186-alternativeI-r2.xlsm JVET-N0186-alternativeII-r2.xlsm JVET-N0186-r2.docx
Decisions
JVET-N0186 CE3-related: Simplification on Intra sub-partition coding mode [B. Wang, A. M. Kotra, S. Esenlik, H. Gao, J. Chen (Huawei)]
Citation