Title:
METHOD AND DEVICE FOR PROCESSING VIDEO SIGNAL
Document Type and Number:
WIPO Patent Application WO/2020/162732
Kind Code:
A1
Abstract:
Embodiments in the present specification provide a method and device for processing a video signal by using a sub-block unit transform. A method of decoding a video signal according to an embodiment of the present specification includes: a step for acquiring, from the video signal, information related to a transform of the current coding unit; and a step for applying an inverse transform, including a horizontal transform and a vertical transform, to a transform unit of the current coding unit on the basis of information related to the transform, wherein the information related to the transform includes: a first flag related to whether the current coding unit is divided into a plurality of sub-blocks; a second flag acquired on the basis of the first flag, and related to the respective sizes of the sub-blocks; a third flag acquired on the basis of the first flag, and related to dividing directions of the coding unit; and a fourth flag related to a sub-block in which a coded block flag (CBF) is present among the sub-blocks divided from the current coding unit on the basis of the second flag and the third flag.
Inventors:
KOO MOONMO (KR)
LIM JAEHYUN (KR)
KIM SEUNGHWAN (KR)
SALEHIFAR MEHDI (KR)
LIM JAEHYUN (KR)
KIM SEUNGHWAN (KR)
SALEHIFAR MEHDI (KR)
Application Number:
PCT/KR2020/001829
Publication Date:
August 13, 2020
Filing Date:
February 10, 2020
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04N19/61; H04N19/129; H04N19/17; H04N19/176; H04N19/625; H04N19/70
Domestic Patent References:
| WO2018190594A1 | 2018-10-18 |
Foreign References:
| KR20180096191A | 2018-08-29 |
Other References:
ZHAO, YIN ET AL.: "CE6: Sub-block transform for inter blocks (CE6.4.1). JVET -M0 140-v3", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1 /SC 29/WG 11, 16 January 2019 (2019-01-16), Marrakech, MA, pages 1 - 18, XP030202316
CHOI, JUNG-AH ET AL.: "Non-CE7: Last position coding for large block-size transforms", JVET-M0251-V5. JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/TEC JTC 1/SC 29/WG 11, 16 January 2019 (2019-01-16), Marrakech, MA, pages 1 - 10, XP030202330
KOO, MOONMO ET AL.: "CE6-related: 32 point MTS based on skipping high frequency coefficients. JVET-M0297", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11, 14 January 2019 (2019-01-14), Marrakech, MA, pages 1 - 10, XP030202100
CHOI, JUNG-AH ET AL.: "Non-CE7: Last position coding for large block-size transforms", JVET-M0251-V5. JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/TEC JTC 1/SC 29/WG 11, 16 January 2019 (2019-01-16), Marrakech, MA, pages 1 - 10, XP030202330
KOO, MOONMO ET AL.: "CE6-related: 32 point MTS based on skipping high frequency coefficients. JVET-M0297", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11, 14 January 2019 (2019-01-14), Marrakech, MA, pages 1 - 10, XP030202100
Attorney, Agent or Firm:
ROYAL PATENT & LAW OFFICE (KR)
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