Motion information prediction method and apparatus for distortion due to projection formation conversion
Gun Bang, Daejeon (KR); Hui Yong Kim, Daejeon (KR); Gwang Hoon Park, Seongnam-si (KR); Woo Woen Gwun, Jeonju-si (KR); Tae Hyun Kim, Hwaseong-si (KR); and Won Jun Lee, Daejeon (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed by ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed on Dec. 22, 2023, as Appl. No. 18/393,911.
Application 18/393,911 is a continuation of application No. 18/085,678, filed on Dec. 21, 2022, granted, now 11,895,317.
Application 18/085,678 is a continuation of application No. 17/378,075, filed on Jul. 16, 2021, granted, now 11,570,463, issued on Jan. 31, 2023.
Application 17/378,075 is a continuation of application No. 16/736,197, filed on Jan. 7, 2020, granted, now 11,102,503, issued on Aug. 24, 2021.
Claims priority of application No. 10-2019-0001726 (KR), filed on Jan. 7, 2019; and application No. 10-2020-0002240 (KR), filed on Jan. 7, 2020.
1. A method of decoding an image, the method comprising: decoding, from a bitstream, motion vector refinement information indicating enablement of motion vector refinement in a current sequence; determining whether a merge mode is applied to a current block in the current sequence; constructing a merge candidate list of the current block in response to the merge mode being applied to the current block, the merge candidate list comprising at least one of a spatial merge candidate derived from a spatial neighboring block of the current block or a temporal merge candidate derived from a temporal neighboring block of the current block; decoding, from the bitstream, a merge index of the current block; determining a motion vector of the current block based on a merge candidate selected from the merge candidate list based on the merge index; determining whether to refine the motion vector of the current block or not; and refining the motion vector of the current block when it is determined to refine the motion vector, wherein refining the motion vector is performed in response to a size of the current block being greater than a threshold value.
