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15th Meeting: Gothenburg, SE, July 2019 2019-07-05 10:06
CE7-related: Interleaved coefficient coding for transform-skip mode
Authors: Marta Karczewicz Qualcomm H. Wang Qualcomm Muhammed Coban Qualcomm Yung-Hsuan Chao Qualcomm
Abstract
This contribution presents 3 methods of reducing the number of passes when encoding transform-skip coefficients. Instead of encoding the abs_level_gtX_flags(X = 2,3,4,5) of a coding group (CG) as 4 separate bit-planes, the method 1 combines all the components except the abs_remainder into a single pass, and the method 2 combines all the components including abs_remainder the into a single pass and the method 3 combines GTX(X=2,3,4,5) and parity into a single pass. Compared to VTM-5.0 with the bugfix introduced in [4], the performance of the proposed method is summarized as follows:
Meeting Notes
JVET-O0623 CE7-related: Interleaved coefficient coding for transform-skip mode [M. Karczewicz, H. Wang, M. Coban, Y.-H. Chao (Qualcomm)]
Cited:
JVET-O0690 X JVET-P0002 JVET-P0027 X JVET-P2002 JVET-Q2002 JVET-R2002 JVET-S2002 JVET-T2002 JVET-U2002 JVET-V2002 JVET-W2002 JVET-X2002 JVET-Y2002 JVET-Z2002
ARCHIVE :
JVET-O0623-method1-LowQP.xlsm JVET-O0623-method1-StandardQP.xlsm JVET-O0623-method2.xlsm JVET-O0623-method3-parity-firstpass.xlsm JVET-O0623-method3.xlsm JVET-O0623-v1.docx JVET-O0623-v2.docx JVET-O0623-v3-clean.docx JVET-O0623-v3.docx JVET-O0623-v4-clean.docx JVET-O0623-v4.docx JVET-O0623-WD-method1.docx JVET-O0623-WD-method2.docx JVET-O0623-WD-method3.docx JVET-O0623.pdf
Decisions
JVET-O0623 CE7-related: Interleaved coefficient coding for transform-skip mode [M. Karczewicz, H. Wang, M. Coban, Y.-H. Chao (Qualcomm)]
Citation