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12th Meeting: Macao, October 2018 2018-10-08 05:58
CE3-related: Modified chroma derived mode
Authors: Li Zhang ByteDance Kai Zhang ByteDance H. Liu ByteDance Yifan Wang ByteDance P. Zhao ByteDance D. Hong ByteDance
Abstract
In VTM2.0, separate block partitioning structure for luma and chroma components is enabled in I slices. Therefore, one chroma coding block may correspond to multiple luma coding blocks. When deriving the chroma derived mode (DM), the intra prediction mode of the luma coding block containing the top-left luma sample in the corresponding luma block is utilized. It is proposed to use the intra prediction mode of the luma coding block covering the center position of the corresponding luma block as chroma DM. Simulation results reportedly show that the proposed method achieves 0.11% BD rate reduction under All Intra Main10 configuration.
Meeting Notes
JVET-L0272 CE3-related: Modified chroma derived mode [L. Zhang, K. Zhang, H. Liu, Y. Wang, P. Zhao, D. Hong (Bytedance)]

In VTM2.0, separate block partitioning structure for luma and chroma components is enabled in I slices. Therefore, one chroma coding block may correspond to multiple luma coding blocks. When deriving the chroma derived mode (DM), the intra prediction mode of the luma coding block containing the top-left luma sample in the corresponding luma block is utilized. It is proposed to use the intra prediction mode of the luma coding block covering the center position of the corresponding luma block as chroma DM. Simulation results reportedly show that the proposed method achieves 0.11% BD rate reduction under All Intra Main10 configuration.

Adopted (see notes under JVET-L0053).

References:
JVET-D0111 JVET-J1010 JVET-K1001
Cited:
JVET-L0023 JVET-L0557 X JVET-L1001 JVET-L1002 JVET-M0002 JVET-M0003 JVET-M0082 JVET-M0086 JVET-M0087 JVET-M0100 JVET-M0117 JVET-M0162 JVET-M0163 JVET-M0164 JVET-M0165 JVET-M0168 JVET-M0170 JVET-M0171 JVET-M0175 JVET-M0176 more than 20
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Decisions
adopted
Adopted (see notes under JVET-L0053).
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