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16th Meeting: Geneva, October 2019 2019-10-04 14:06
Non-CE7: Rice parameter derivation for coefficient level coding
Authors: J. Choi LGE Jin Heo LGE S. Yoo LGE J. Choi LGE J. Lim LGE S. Kim LGE
Abstract
In VVC, Rice parameter derivation for coefficient level coding is determined based on the sum of absolute levels of five neighboring coefficients. However, it is not always five neighboring coefficients available. Therefore, in this contribution, Rice parameter derivation method based on the number of available neighboring coefficients is investigated. It has been reported from experimental results that the proposed Rice parameter derivation provides better coding performance.
Meeting Notes
JVET-P0465 Non-CE7: Rice parameter derivation for coefficient level coding [J. Choi, J. Heo, S. Yoo, J. Choi, J. Lim, S. Kim (LGE)]

In VVC, Rice parameter derivation for coefficient level coding is determined based on the sum of absolute levels of five neighboring coefficients. However, it is not always five neighboring coefficients available. Therefore, in this contribution, Rice parameter derivation method based on the number of available neighboring coefficients is investigated. It is reported from experimental results that the proposed Rice parameter derivation provides better coding performance.

For QP = 2, 7, 12, 17 (Luma BD-rates for overall, Class F, TGM)

  • Overall: -0.02% (AI), 0.0% (RA), 0.0% (LD)
  • Class F: -0.03% (AI), -0.13% (RA), -0.12% (LD)
  • TGM: -0.14% (AI), -0.05% (RA), -0.11% (LD)

The benefit in terms of compression performance only for SC classes is too small to take an action.

References:
JVET-O2027
Cited:
JVET-P0027 X JVET-P0960 X
ARCHIVE v2 :
JVET-P0465-v1.docx JVET-P0465_c36_CTC.xlsm JVET-P0465_c36_LowQP.xlsm JVET-P0465_v1.pdf ~$JVET-P0465_c36_LowQP.xlsm
Decisions
The benefit in terms of compression performance only for SC classes is too small to take an action.
Citation