Title:
IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING METHOD, AND IMAGE DECODING METHOD
Document Type and Number:
WIPO Patent Application WO/2023/181546
Kind Code:
A1
Abstract:
There is generated a predicted image obtained by: applying an intra-predicted image obtained by an intra-prediction for some regions in a to-be-encoded block included in an image; and applying an inter-precited image obtained by an inter-prediction for the other regions of the block different from those some regions thereof. Then, a predicted error that is the difference between the generated predicted image and the block is derived. The derived predicted error is then frequency-converted, thereby deriving a conversion coefficient, which is then quantized by use of a quantization matrix, thereby deriving a quantization coefficient, which is then encoded.
Inventors:
SHIMA MASATO (JP)
Application Number:
PCT/JP2022/047079
Publication Date:
September 28, 2023
Filing Date:
December 21, 2022
Export Citation:
Assignee:
CANON KK (JP)
International Classes:
H04N19/126; H04N19/159; H04N19/176
Domestic Patent References:
| WO2020116402A1 | 2020-06-11 |
Other References:
Y. KIDANI (KDDI), H. KATO (KDDI), K. KAWAMURA (KDDI), H. JANG (LGE), S. KIM, J. LIM (LGE), Z. DENG (BYTEDANCE), K. ZHANG, L. ZHANG: "EE2-related: Combination of JVET-X0078 (Test 7/8), JVET-X0147 (Proposal-2), and GPM direct motion storage", 24. JVET MEETING; 20211006 - 20211015; TELECONFERENCE; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVET-X0166 ; m58206, 11 October 2021 (2021-10-11), XP030298118
29 August 2020 (2020-08-29), ANONYMOUS: "ITU-T H.266 RECOMMENDATION. SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS Infrastructure of audiovisual services - Coding of moving video. ITU-T H.266", XP009535893
OLENA CHUBACH , CHEN-YEN LAI , CHING-YEH CHEN , TZU-DER CHUANG , CHIN-WEI HSU , YU-WEN HUANG , SHAW-MIN LEI: "CE7-related:Support of quantization matrices for VVC", 14. JVET MEETING; 20190319 - 20190327; GENEVA; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVET-N0847, 24 March 2019 (2019-03-24), pages 1 - 4, XP030204823
29 August 2020 (2020-08-29), ANONYMOUS: "ITU-T H.266 RECOMMENDATION. SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS Infrastructure of audiovisual services - Coding of moving video. ITU-T H.266", XP009535893
OLENA CHUBACH , CHEN-YEN LAI , CHING-YEH CHEN , TZU-DER CHUANG , CHIN-WEI HSU , YU-WEN HUANG , SHAW-MIN LEI: "CE7-related:Support of quantization matrices for VVC", 14. JVET MEETING; 20190319 - 20190327; GENEVA; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVET-N0847, 24 March 2019 (2019-03-24), pages 1 - 4, XP030204823
Attorney, Agent or Firm:
OHTSUKA PATENT OFFICE, P.C. (JP)
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