US 12,452,427 B2
Method and apparatus for video coding using versatile information-based context model
Byeung Woo Jeon, Seongnam-si (KR); Jee Yoon Park, Seoul (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. 14, 2023, as Appl. No. 18/368,451.
Application 18/368,451 is a continuation of application No. PCT/KR2022/003787, filed on Mar. 17, 2022.
Claims priority of application No. 10-2021-0035974 (KR), filed on Mar. 19, 2021; and application No. 10-2022-0032599 (KR), filed on Mar. 16, 2022.
Prior Publication US 2024/0007636 A1, Jan. 4, 2024
Int. Cl. H04N 19/13 (2014.01); H04N 19/70 (2014.01); H04N 19/91 (2014.01)
CPC H04N 19/13 (2014.11) [H04N 19/70 (2014.11); H04N 19/91 (2014.11)] 9 Claims
OG exemplary drawing
 
1. An entropy decoding method, performed by a video decoding apparatus, for decoding a syntax element of a block level related to a current block, the entropy decoding method comprising:
acquiring encoded data related to the syntax element of the block level;
deriving a context model based on encoding information of at least one neighboring block of the current block and high level video information of a higher level than the block level related to the current block, wherein the context model designates an initial value of a symbol value occurrence probability;
generating a bin string by decoding the encoded data using the context model; and
obtaining a value of the syntax element of the block level by inversely binarizing the bin string,
wherein generating the bin string comprises:
generating at least one bin of the bin string using the symbol value occurrence probability; and
updating, for use in generating a next bin, the symbol value occurrence probability according to a decoding result for the at least one bin.