Title:
METHOD AND APPARATUS OF LATENCY REDUCTION FOR CHROMA RESIDUE SCALING
Document Type and Number:
WIPO Patent Application WO/2020/187161
Kind Code:
A1
Abstract:
A method and apparatus of video decoding are disclosed. According to one method, the chroma residue scaling factors are derived based on neighboring prediction or reconstructed luma samples of the collocated luma block, where the neighboring prediction or reconstructed luma samples of the collocated luma block correspond to samples among M samples along a top boundary of the collocated luma block and N samples along a left boundary of the collocated luma block. Chroma scaling is applied to chroma residual samples of the chroma residual block according to the chroma residue scaling factors derived. In another method, the chroma residue scaling factors are derived based on one or more reconstructed luma samples outside the collocated luma processing data unit. In another method, the chroma residue scaling factors are signaled in or parsed from APS (Adaptation Parameter Set) of the bitstream.
Inventors:
LIN ZHI-YI (CN)
CHUANG TZU-DER (CN)
CHEN CHING-YEH (CN)
HSU CHIH-WEI (CN)
CHUANG TZU-DER (CN)
CHEN CHING-YEH (CN)
HSU CHIH-WEI (CN)
Application Number:
PCT/CN2020/079287
Publication Date:
September 24, 2020
Filing Date:
March 13, 2020
Export Citation:
Assignee:
MEDIATEK INC (CN)
International Classes:
H04N19/186; H04N19/124
Foreign References:
| US20160080751A1 | 2016-03-17 |
Other References:
FRANCOIS，EDOUARD ET AL.: "Chroma residual scaling with separate luma/chroma tree", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 14TH MEETING: GENEVA， CH， 19–27 MARCH 2019，DOCUMENT: JVET-N0389, 12 March 2019 (2019-03-12), XP030202777
LIN, ZHI-YI ET AL.: "AHG16: Subblock-based chroma residual scaling", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 14TH MEETING: GENEVA， CH， 19–27 MARCH 2019，DOCUMENT: JVET-N0113-V1, 13 March 2019 (2019-03-13), XP030202828
VANAM， RAHUL ET AL.: "CE3-related: Low latency intra sub-partitions", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 14TH MEETING: GENEVA， CH， 19–27 MARCH 2019，DOCUMENT: JVET-N0313, 13 March 2019 (2019-03-13), XP030202958
FRANCOIS，EDOUARD ET AL.: "CE12-related: in-loop luma reshaping with approximate inverse mapping function", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 13TH MEETING: MARRAKECH， MA， 9–18 JAN. 2019，DOCUMENT: JVET-M0640, 18 January 2019 (2019-01-18), XP030201622
EDOUARD FRANCOIS ET AL.: "Chroma residual scaling with separate luma/chroma tree", 14. JVET MEETING, GENEVA, vol. 19, 27 March 2019 (2019-03-27)
See also references of EP 3939298A4
LIN, ZHI-YI ET AL.: "AHG16: Subblock-based chroma residual scaling", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 14TH MEETING: GENEVA， CH， 19–27 MARCH 2019，DOCUMENT: JVET-N0113-V1, 13 March 2019 (2019-03-13), XP030202828
VANAM， RAHUL ET AL.: "CE3-related: Low latency intra sub-partitions", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 14TH MEETING: GENEVA， CH， 19–27 MARCH 2019，DOCUMENT: JVET-N0313, 13 March 2019 (2019-03-13), XP030202958
FRANCOIS，EDOUARD ET AL.: "CE12-related: in-loop luma reshaping with approximate inverse mapping function", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 13TH MEETING: MARRAKECH， MA， 9–18 JAN. 2019，DOCUMENT: JVET-M0640, 18 January 2019 (2019-01-18), XP030201622
EDOUARD FRANCOIS ET AL.: "Chroma residual scaling with separate luma/chroma tree", 14. JVET MEETING, GENEVA, vol. 19, 27 March 2019 (2019-03-27)
See also references of EP 3939298A4
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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