US 12,120,292 B2
Method and device for encoding/decoding image by using geometrically changed image
Jung Won Kang, Daejeon (KR); Hyun Suk Ko, Daejeon (KR); Sung Chang Lim, Daejeon (KR); Jin Ho Lee, Daejeon (KR); Dong San Jun, Daejeon (KR); Hui Yong Kim, Daejeon (KR); Gwang Hoon Park, Seongnam-si (KR); Jin Soo Choi, Daejeon (KR); Tae Hyun Kim, Hwaseong-si (KR); Dae Young Lee, Ansan-si (KR); and Young Su Heo, Suwon-si (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR); and University-Industry Cooperation Group of Kyung Hee University, Yongin-si (KR)
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR); and University-Industry Cooperation Group of Kyung Hee University, Yongin-si (KR)
Filed on Oct. 25, 2022, as Appl. No. 17/972,894.
Application 17/972,894 is a continuation of application No. 17/160,845, filed on Jan. 28, 2021, granted, now 11,516,463.
Application 17/160,845 is a continuation of application No. 15/777,562, filed on May 18, 2018, granted, now 10,944,962.
Application 15/777,562 is a continuation of application No. PCT/KR2016/013366, filed on Nov. 18, 2016.
Claims priority of application No. 10-2015-0163494 (KR), filed on Nov. 20, 2015.
Prior Publication US 2023/0042486 A1, Feb. 9, 2023
Int. Cl. H04N 19/105 (2014.01); H04N 19/147 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/147 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11)] 13 Claims
OG exemplary drawing
 
1. A method for encoding an image, the method comprising:
determining a prediction block of a current block within an encoding target picture by performing inter prediction based on a reference picture and geometric modification information; and
encoding geometric modification usage information of the current block indicating whether the geometric modification information is used for inter-prediction for the current block,
wherein:
a part of the reference picture is geometrically modified based on the geometric modification information, a geometrical modification of the part of the reference picture including at least one of a size modification, and a rotation modification,
the geometric modification information includes a plurality of geometric parameters,
the prediction block of the current block is determined based on the geometrically modified part of the reference picture,
the reference picture is selected from a reference picture list and is different from the encoding target picture, and
the geometric modification information is encoded by using a motion information candidate list.