US 12,464,116 B2
Method and apparatus for video coding using block vector with adaptive spatial resolution
Byeung Woo Jeon, Seongnam-si (KR); Bum Yoon Kim, Yongin-si (KR); Yu Jin Lee, Suwon-si (KR); and Seung Wook Park, Yongin-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); and RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY, Suwon-si (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); and RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY, Suwon-si (KR)
Filed on Sep. 28, 2023, as Appl. No. 18/374,488.
Application 18/374,488 is a continuation of application No. PCT/KR2022/004317, filed on Mar. 28, 2022.
Claims priority of application No. 10-2021-0043574 (KR), filed on Apr. 2, 2021; and application No. 10-2022-0037102 (KR), filed on Mar. 25, 2022.
Prior Publication US 2024/0031558 A1, Jan. 25, 2024
Int. Cl. H04N 19/105 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/523 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/523 (2014.11)] 16 Claims
OG exemplary drawing
 
1. A method for adaptively generating a block vector of a current block in an intra block copy (IBC) mode performed by a video decoding apparatus, the method comprising:
decoding a block vector predictor index and an absolute value of a block vector difference from a bitstream;
generating a block vector predictor candidate list of the current block and generating a block vector predictor from the block vector predictor candidate list using the block vector predictor index;
deriving a block vector spatial resolution;
deriving or decoding a sign of the block vector difference using the block vector spatial resolution, the block vector predictor, and the absolute value of the block vector difference;
generating the block vector difference by combining the absolute value and the sign of the block vector difference; and
generating the block vector by combining the block vector predictor and the block vector difference.