US 11,871,001 B2
Image encoding/decoding method and device, and recording medium storing bitstream
Ha Hyun Lee, Seoul (KR); Jung Won Kang, Daejeon (KR); Sung Chang Lim, Daejeon (KR); Jin Ho Lee, Daejeon (KR); and Hui Yong Kim, Daejeon (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed on Nov. 25, 2022, as Appl. No. 17/994,261.
Application 17/994,261 is a continuation of application No. 17/277,664, granted, now 11,546,605, previously published as PCT/KR2019/012277, filed on Sep. 20, 2019.
Claims priority of application No. 10-2018-0113033 (KR), filed on Sep. 20, 2018; application No. 10-2018-0115917 (KR), filed on Sep. 28, 2018; application No. 10-2018-0119528 (KR), filed on Oct. 8, 2018; application No. 10-2018-0169000 (KR), filed on Dec. 26, 2018; application No. 10-2019-0000555 (KR), filed on Jan. 3, 2019; and application No. 10-2019-0069693 (KR), filed on Jun. 13, 2019.
Prior Publication US 2023/0087466 A1, Mar. 23, 2023
Int. Cl. H04N 19/139 (2014.01); H04N 19/159 (2014.01); H04N 19/167 (2014.01); H04N 19/176 (2014.01); H04N 19/593 (2014.01)
CPC H04N 19/139 (2014.11) [H04N 19/159 (2014.11); H04N 19/167 (2014.11); H04N 19/176 (2014.11); H04N 19/593 (2014.11)] 6 Claims
OG exemplary drawing
 
1. A method of decoding an image, the method comprising:
determining control point motion vectors of a current block in response to an affine model prediction being applied to the current block;
determining motion vectors of sub-blocks in the current block based on the control point motion vectors;
reconstructing the current block by performing inter prediction to the sub-blocks in the current block; and
applying a deblocking filter to boundaries between the sub-blocks in the current block,
wherein whether the motion vectors of the sub-blocks are determined based on the control point motion vectors or not is determined based on a size of the current block, and
wherein, when a width of the current block is smaller than 8 or a height of the current block is smaller than 8, the motion vectors of the sub-blocks are not determined based on the control point motion vectors.