US 12,309,396 B2
Method and device for image encoding/decoding, and recording medium having bitstream stored thereon
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); Dae Yeon Kim, Seoul (KR); Do Hyeon Park, Goyang-si (KR); Jae Gon Kim, Goyang-si (KR); Yong Uk Yoon, Jeju-si (KR); and Yung Lyul Lee, Seoul (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR); CHIPS & MEDIA, INC, Seoul (KR); INDUSTRY UNIVERSITY—COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY, Goyang-si (KR); and INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, Seoul (KR)
Appl. No. 17/259,842
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR); CHIPS&MEDIA, INC, Seoul (KR); INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY, Goyang-si (KR); and INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, Seoul (KR)
PCT Filed Jul. 5, 2019, PCT No. PCT/KR2019/008299
§ 371(c)(1), (2) Date Jan. 12, 2021,
PCT Pub. No. WO2020/013532, PCT Pub. Date Jan. 16, 2020.
Claims priority of application No. 10-2018-0081836 (KR), filed on Jul. 13, 2018; and application No. 10-2019-0027678 (KR), filed on Mar. 11, 2019.
Prior Publication US 2021/0274197 A1, Sep. 2, 2021
Int. Cl. H04N 19/119 (2014.01); H04N 19/129 (2014.01); H04N 19/176 (2014.01); H04N 19/18 (2014.01); H04N 19/60 (2014.01)
CPC H04N 19/18 (2014.11) [H04N 19/119 (2014.11); H04N 19/129 (2014.11); H04N 19/176 (2014.11); H04N 19/60 (2014.11)] 11 Claims
OG exemplary drawing
 
1. A method of decoding an image, the method comprising:
determining a non-zeroed region within a current block;
partitioning the non-zeroed region into transform coefficient groups after determining the non-zeroed region within the current block; and
decoding a transform coefficient on the per transform coefficient group basis,
wherein a size of each of the transform coefficient groups is determined based on a width and a height of the non-zeroed region, and
wherein, for the non-zeroed region of which width or height is smaller than a first predefined size, a shape of each of the transform coefficient groups is determined to be a non-square shape having a second predefined size, when an area of the non-zeroed region is larger than a predefined area and a shape of the non-zeroed region is a non-square shape, and
wherein, for the non-zeroed region of which width and height is larger than the first predefined size, each of the transform coefficient groups is determined to have a third predefined size which is different from the second fifth predefined size.