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18th Meeting: Teleconference, April 2020 2020-04-02 03:19
AHG9: Signalling of LMCS control
Authors: Li Zhang ByteDance Ye-Kui Wang ByteDance Kai Zhang ByteDance
Abstract
This contribution proposes to replace the PH flag ph_lmcs_enabled_flag with a 2-bit ph_lmcs_mode_idc, with 3 modes specified: disabled (mode 0), used for all slices (mode 1), and enabled (mode 2). In mode 1, the LMCS is used for all slices of a picture, and no signalling of LMCS control flag is needed in the SH. The semantics of slice_lmcs_enabled_flag is revised accordingly. In addition, fixes of the semantics of ph_chroma_residual_scale_flag are proposed to reflect the intention of enabling/disabling chroma residual scaling for a picture or slice.
Meeting Notes
JVET-R0063 AHG9: Signalling of LMCS control [L. Zhang, Y.-K. Wang, K. Zhang (Bytedance)]
Cited:
JVET-R0404
PATENTS:
WO/2020/216380 1.00 WO2020156530A1 0.34 2020-08-06 202227056194 0.34 WO/2021/207055 0.33 US20210314572A1 0.32 2021-10-07 20230041260 0.32 20240146971 0.31 US12348706B2 0.30 2025-07-01
ARCHIVE v1 :
JVET-R0063-v1.docx
Decisions
JVET-R0063 AHG9: Signalling of LMCS control [L. Zhang, Y.-K. Wang, K. Zhang (Bytedance)]
Citation