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11th Meeting: Ljubljana, July 2018 2018-07-03 02:53
CE3-related: Alternative techniques for DC mode without division
Authors: A. Filippov Huawei V. Rufitskiy Huawei Jie Chen Huawei
Abstract
In test CE3-1.2.1 [1], a mechanism of calculating approximations of DC values for generating DC-based intra-predictors was proposed. This contribution presents 2 techniques alternative to CE3-1.2.1. The 1st technique uses multiplication operation and an additional LUT to avoid division. In the 2nd technique, reference samples only along with a longer side of a rectangular block are taken to calculate a DC value. In both cases, the conventional technique of calculating DC values is used for square blocks as a division operation is not required for them. On top of VTM, the simulation results for the 1st technique reportedly show 0.00% of luma BD-rate savings for All Intra (AI) and -0.01% of luma BD-rate savings for Random Access (RA) configuration. On top of BMS, the simulation results for the 1st technique reportedly show 0.01% luma BD-rate savings for All Intra (AI) configuration, and -0.02% of luma BD-rate savings for Random Access (RA) configuration.
Meeting Notes
JVET-K0122 CE3-related: Alternative techniques for DC mode without division [A. Filippov, V. Rufitskiy, J. Chen (Huawei)]
References:
JVET-B1010
Cited:
JVET-K0023 JVET-K0483 X JVET-K0539 JVET-K1001 JVET-K1002 JVET-L0002 JVET-L0013 JVET-L0044 JVET-L0085 JVET-L0092 JVET-L0093 JVET-L0096 JVET-L0097 JVET-L0114 JVET-L0124 JVET-L0219 JVET-L0255 JVET-L0340 JVET-L0428 JVET-L0450 more than 20
ARCHIVE v1 :
JVET-K0122-table1.xlsm JVET-K0122-table2.xlsm JVET-K0122-table3.xlsm JVET-K0122-table4.xlsm JVET-K0122-v1.docx
Decisions
JVET-K0122 CE3-related: Alternative techniques for DC mode without division [A. Filippov, V. Rufitskiy, J. Chen (Huawei)]
Citation