METHOD AND APPARATUS OF ADVANCED INTRA PREDICTION FOR CHROMA COMPONENTS IN VIDEO CODING

WIPO Patent Application WO/2017/140211

A1

Combined Intra prediction is disclosed. The combined Intra prediction is generated for encoding or decoding of a current chroma block by combining first Intra prediction generated according to the first chroma Intra prediction mode and second Intra prediction generated according to the second chroma Intra prediction mode. The second chroma Intra prediction mode belongs to an Intra prediction mode group excluding any LM mode. Multi-phase Intra prediction for a chroma component of non-444 colour video data is also disclosed. A mode group including at least two LM modes are used for multi-phase Intra prediction, where mapping between chroma samples and corresponding luma samples is different for two LM modes from the mode group. Furthermore, chroma Intra prediction with one or more LM modes using extended neighbouring area to derive LM mode parameters is also disclosed.

ZHANG KAI (CN)
AN JICHENG (CN)
HUANG HAN (CN)

PCT/CN2017/072560

August 24, 2017

January 25, 2017

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MEDIATEK SINGAPORE PTE LTD (SG)
ZHANG KAI (CN)
AN JICHENG (CN)
HUANG HAN (CN)

H04N19/159

CN104871537A	2015-08-26
CN104255028A	2014-12-31
US20150016522A1	2015-01-15
CN103260018A	2013-08-21
JP2015177343A	2015-10-05

EDOUARD FRANCOIS ET AL.: "Non-CE6a: Use of chroma phase in LM mode", JOINT COLLABORATIVE TEAM ON VIDEO CODING (JCT-VC) OF ITU-T SG 16 WP3 AND ISO/IEC JTC1/ SC29/WG11 8TH MEETING, 3 February 2012 (2012-02-03), pages 1 - 9, XP030051572, DOI: Non-CE6a: Use of chroma phase in LM mode
See also references of EP 3403407A4

BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)

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