US 12,149,688 B2
Method and device for high-level image segmentation and image encoding/decoding
Jae Gon Kim, Goyang-si (KR); Ji Hoon Do, Busan (KR); Do Heon Park, Goyang-si (KR); and Yong Uk Yoon, Jeju-si (KR)
Assigned to HANWHA VISION CO., LTD., Seongnam-si (KR)
Appl. No. 17/631,999
Filed by HANWHA VISION CO., LTD., Seongnam-si (KR)
PCT Filed Aug. 11, 2020, PCT No. PCT/KR2020/010593
§ 371(c)(1), (2) Date Feb. 1, 2022,
PCT Pub. No. WO2021/029646, PCT Pub. Date Feb. 18, 2021.
Claims priority of application No. 10-2019-0098337 (KR), filed on Aug. 12, 2019; application No. 10-2019-0124931 (KR), filed on Oct. 8, 2019; application No. 10-2020-0004469 (KR), filed on Jan. 13, 2020; and application No. 10-2020-0039405 (KR), filed on Mar. 31, 2020.
Prior Publication US 2022/0279179 A1, Sep. 1, 2022
Int. Cl. H04N 19/119 (2014.01); H04N 19/174 (2014.01); H04N 19/46 (2014.01); H04N 19/70 (2014.01); H04N 19/129 (2014.01); H04N 19/176 (2014.01); H04N 19/61 (2014.01)
CPC H04N 19/119 (2014.11) [H04N 19/174 (2014.11); H04N 19/46 (2014.11); H04N 19/70 (2014.11); H04N 19/129 (2014.11); H04N 19/176 (2014.11); H04N 19/61 (2014.11)] 11 Claims
OG exemplary drawing
 
1. An image decoding method, comprising:
decoding division information for a current picture from a bitstream; and
dividing the current picture into at least one unit of a sub-picture, a slice, or a tile by using the decoded division information,
wherein the division information includes at least one of sub-picture division information, slice division information, or tile division information,
wherein decoding the slice division information comprises:
obtaining a fifth flag indicating whether a slice is divided in a rectangular mode or a raster scan mode;
obtaining, based on the fifth flag, information indicating a number of slices belonging to the current picture; and
obtaining, based on the information indicating the number of the slices belonging to the current picture, information indicating a width and a height of each slice, and
wherein, in response to a height of an [SliceTopLeftTileIdx [i]/NumTileColumns]-th tile row being greater than 1, information indicating a height of each slice within an i-th tile composed of a plurality of slices is adaptively decoded based on the information indicating a width and a height of each slice.