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18th Meeting: Teleconference, April 2020 2020-04-18 16:35
AHG9/14 : On lossless coding granularity
Authors: S. Yoo LGE J. Choi LGE J. Lim LGE S. Kim LGE Sunmi Yoo
Abstract
In this contribution, two granularities for the lossless coding is provided by high level syntax changes. Currently, the lossy and lossless mixture can be allowed at a picture level since the dependent quantization (DQ) and the sign data hiding (SDH) switches are defined in the picture header. Therefore, the different granularities for the lossless coding is proposed.
Meeting Notes
JVET-R0155 AHG9/14: On lossless coding granularity [S. Yoo, J. Choi, J. Lim, S. Kim (LGE)]

In this contribution, two granularities for the lossless coding is provided by high level syntax changes. Currently, the lossy and lossless mixture can be allowed at a picture level since the dependent quantization (DQ) and the sign data hiding (SDH) switches are defined in the picture header. Therefore, the different granularities for the lossless coding is proposed.

  • Method 1: Slice level lossless coding
  • Method 2: Picture level lossless coding

It is proposed to move the control flags for SDH and DQ from picture header to slice header.

The issue was resolved – see further notes under JVET-R0271.

References:
JVET-Q2001 JVET-R0153
PATENTS:
1331822 0.34 3751848 0.33 WO/2007/035147 0.32 2657267 0.31 2679/MUMNP/2008 0.30 WO/2008/008888 0.28 2041977 0.27 20030142744 0.26
ARCHIVE v3 :
JVET-R0155_v1.pdf JVET-R0155_v2.docx
Decisions
The issue was resolved – see further notes under JVET-R0271.
Citation