Title:
IMAGE DECODING METHOD FOR PERFORMING BDPCM ON BASIS OF BLOCK SIZE AND DEVICE THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/256390
Kind Code:
A1
Abstract:
An image decoding method performed by a decoding device according to this document comprises the steps of: determining whether the width and the height of a current block are smaller than or equal to the size of a maximum transform block; when the width and the height are smaller than or equal to the size of the maximum transform block, obtaining a BDPCM flag representing whether or not to apply BDPCM for the current block; deriving prediction samples for first and second samples of the current block on the basis of the BDPCM flag; deriving residual samples on the basis of received residual information; and deriving reconstructed samples for the first and second samples on the basis of the prediction samples and the residual samples.
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Inventors:
YOO SUNMI (KR)
NAM JUNGHAK (KR)
CHOI JUNGAH (KR)
NAM JUNGHAK (KR)
CHOI JUNGAH (KR)
Application Number:
PCT/KR2020/007812
Publication Date:
December 24, 2020
Filing Date:
June 17, 2020
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04N19/157; H04N19/11; H04N19/122; H04N19/132; H04N19/176; H04N19/593; H04N19/70
Foreign References:
| US20180084284A1 | 2018-03-22 |
Other References:
KARCZEWICZ (QUALCOMM) M; COBAN (QUALCOMM) M: "CE8-related: Quantized residual BDPCM.", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 1 1 14TH MEETING: GENEVA, no. JVET-N0413, 26 March 2019 (2019-03-26), XP030205008
BENJAMIN BROSS; JIANLE CHEN; SHAN LIU: "Versatile Video Coding (Draft 5).", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 14TH MEETING: GENEVA, no. JVET-N1001-v8, 11 June 2019 (2019-06-11), XP030205561
HENRY (ORANGE) F; ABDOLI (ORANGE) M; PHILIPPE (B-COM) P; CLARE (BCOM) G: "CE8: BDPCM with horizonta1/vertical predictor and independently decodable areas (test 8.3. 1b).", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 13TH MEETING: MANAKECH, no. JVET-M0057, 10 January 2019 (2019-01-10), XP030201266
ABDOLI (ORANGE) M; CLARE (ORANGE) G; HENRY (ORANGE) F; PHILIPPE (ORANGE) P: "AHG11: Block DPCM for Screen Content Coding.", 12. JVET MEETING; 20181003 - 20181012; MACAO; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVET-L0078, 8 October 2018 (2018-10-08), Macao, CN, pages 1 - 7, XP030195014
See also references of EP 3989568A4
BENJAMIN BROSS; JIANLE CHEN; SHAN LIU: "Versatile Video Coding (Draft 5).", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 14TH MEETING: GENEVA, no. JVET-N1001-v8, 11 June 2019 (2019-06-11), XP030205561
HENRY (ORANGE) F; ABDOLI (ORANGE) M; PHILIPPE (B-COM) P; CLARE (BCOM) G: "CE8: BDPCM with horizonta1/vertical predictor and independently decodable areas (test 8.3. 1b).", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11 13TH MEETING: MANAKECH, no. JVET-M0057, 10 January 2019 (2019-01-10), XP030201266
ABDOLI (ORANGE) M; CLARE (ORANGE) G; HENRY (ORANGE) F; PHILIPPE (ORANGE) P: "AHG11: Block DPCM for Screen Content Coding.", 12. JVET MEETING; 20181003 - 20181012; MACAO; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVET-L0078, 8 October 2018 (2018-10-08), Macao, CN, pages 1 - 7, XP030195014
See also references of EP 3989568A4
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
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