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23rd Meeting: by teleconference, July 2021 2021-06-29 18:52
[CE2.1][CE2.2] Content Adaptive Transform Precision
Authors: Karam Naser InterDigital Franck Galpin InterDigital Tangi Poirier InterDigital F. Le Leannec InterDigital
Abstract
This contribution reports the results of the core experiment tests (CE2.1 and CE2.2) on high bit-depth and high bitrate extension. Specifically, the two tests proposes to adaptively assign the downshifts in the scaling process for transform coefficients (clause 8.7.3 of VVC) and in the transformation process for scaled transform coefficients (clause 8.7.4 of VVC) by examining the coefficients values upon dequantization and inverse transform.
Meeting Notes
JVET-W0050 [CE2.1][CE2.2] Content Adaptive Transform Precision [K. Naser, F. Galpin, T. Poirier, F. Le Leannec (InterDigital)]
References:
JVET-V0133 JVET-W0022
Cited:
JVET-W0008 JVET-W0022 X JVET-W0056 X JVET-W0092 JVET-W0094 X JVET-W0149 X
PATENTS:
20240187652 0.34 WO/2022/214877 0.33 3163047 0.32 202217037841 0.31 WO/2021/136747 0.30 20230046946 0.28 WO/2020/092137 0.27 WO/2025/003029 0.26
ARCHIVE v1 :
CE2_1_ExtendedPrecision0_12_Log2Tr16_vs_VTM-13.xlsm CE2_1_ExtendedPrecision0_12_Log2Tr16_vs_VTM-13_ExtendedPrecision0_12_Log2Tr16-low-QP.xlsm CE2_1_vs_JVET-T2001-v2.docx CE2_1_vs_VTM-13-low-QP.xlsm CE2_2_ExtendedPrecision0_12_Log2Tr16_vs_VTM-13-low-QP.xlsm CE2_2_ExtendedPrecision0_12_Log2Tr16_vs_VTM-13_ExtendedPrecision0_12_LogTr16-low-QP.xlsm CE2_2_vs_JVET-T2001-v2.docx CE2_2_vs_VTM-13-low-QP.xlsm JVET-W0050.docx
Decisions
JVET-W0050 [CE2.1][CE2.2] Content Adaptive Transform Precision [K. Naser, F. Galpin, T. Poirier, F. Le Leannec (InterDigital)]
Citation