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14th Meeting: Geneva, March 2019 2019-03-24 09:42
CE6-related: Simplification of the Reduced Secondary Transform
Authors: Mischa Siekmann HHI Martin Winken HHI Heiko Schwarz HHI Detlev Marpe HHI Thomas Wiegand HHI
Abstract
This contribution proposes a simplification of the Reduced Secondary Transform (RST) [CE6-3.1, JVET-N0193]. By also enforcing all the primary transform coefficients to be zero, that are outside the support of the RST transform matrix, the encoder and decoder runtime can be reduced significantly, while the coding gain keeps almost the same. Tests were performed on top of three different RST configurations of CE6-3.1 plus one additional configuration (test 1), which combines the reduced memory version with the worst-case multiplication per sample constraint of JVET-N0193. Compared to CE6-3.1d the encoder runtime overhead is halved for AI (113% vs 126%) with a negligible effect on the performance (AI: -1.28% vs. -1.34%).
Meeting Notes
JVET-N0555 CE6-related: Simplification of the Reduced Secondary Transform [M. Siekmann, M. Winken, H. Schwarz, D. Marpe, T. Wiegand (HHI)] [late]
References:
JVET-K0099 JVET-L0133 JVET-M0046 JVET-M0292 JVET-M1010 JVET-M1026 JVET-N0193
Cited:
JVET-N0026 JVET-N0812 X JVET-N0855 JVET-N1026
ARCHIVE v4 :
._JVET-N0555-Test1-CTC-v2.xlsm ._JVET-N0555-Test1-InterMTSOn.xlsm ._JVET-N0555-Test1-LowQP.xlsm ._JVET-N0555-Test3-CTC-v2.xlsm ._JVET-N0555-Test3-InterMTSOn.xlsm ._JVET-N0555-Test3-LowQP.xlsm ._JVET-N0555-Test4-CTC-v2.xlsm ._JVET-N0555-Test4-LowQP.xlsm ._JVET-N0555-v3.docx ._JVET-N0555.pptx JVET-N0555-Test1-CTC-v2.xlsm JVET-N0555-Test1-InterMTSOn.xlsm JVET-N0555-Test1-LowQP.xlsm JVET-N0555-Test3-CTC-v2.xlsm JVET-N0555-Test3-InterMTSOn.xlsm JVET-N0555-Test3-LowQP.xlsm JVET-N0555-Test4-CTC-v2.xlsm JVET-N0555-Test4-LowQP.xlsm JVET-N0555-v3.docx JVET-N0555.pptx
Decisions
JVET-N0555 CE6-related: Simplification of the Reduced Secondary Transform [M. Siekmann, M. Winken, H. Schwarz, D. Marpe, T. Wiegand (HHI)] [late]
Citation