US 12,081,768 B2
Image encoding/decoding method and apparatus
Jin Ho Lee, Daejeon (KR); Jung Won Kang, Daejeon (KR); Ha Hyun Lee, Seoul (KR); Sung Chang Lim, Daejeon (KR); Hui Yong Kim, Daejeon (KR); Jae Gon Kim, Goyang-si (KR); Do Hyeon Park, Goyang-si (KR); Ji Hoon Do, Busan (KR); and Yong Uk Yoon, Busan (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR); and INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY, Goyang-si (KR)
Appl. No. 17/611,871
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR); and INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY, Goyang-si (KR)
PCT Filed Jun. 19, 2020, PCT No. PCT/KR2020/007987
§ 371(c)(1), (2) Date Nov. 16, 2021,
PCT Pub. No. WO2020/256479, PCT Pub. Date Dec. 24, 2020.
Claims priority of application No. 10-2019-0074382 (KR), filed on Jun. 21, 2019; and application No. 10-2019-0116640 (KR), filed on Sep. 23, 2019.
Prior Publication US 2022/0232221 A1, Jul. 21, 2022
Int. Cl. H04N 19/14 (2014.01); H04N 19/12 (2014.01); H04N 19/176 (2014.01); H04N 19/60 (2014.01)
CPC H04N 19/14 (2014.11) [H04N 19/12 (2014.11); H04N 19/176 (2014.11); H04N 19/60 (2014.11)] 13 Claims
OG exemplary drawing
 
1. An image decoding method, the method comprising:
obtaining maximum transform block size information;
deriving a maximum transform block size on the basis of the maximum transform block size information; and
determining whether or not a secondary inverse transform is applied to a current block based on the maximum transform block size and a horizontal size and a vertical size of the current block,
wherein the determining of whether or not the secondary inverse transform is applied comprises determining that the secondary inverse transform is not applied to the current block when a prediction mode of the current block is an inter-prediction mode.