US 12,294,786 B2
Image data encoding/decoding method and apparatus
Ki Baek Kim, Seoul (KR)
Assigned to B1 INSTITUTE OF IMAGE TECHNOLOGY, INC., Seoul (KR)
Filed by B1 INSTITUTE OF IMAGE TECHNOLOGY, INC., Seoul (KR)
Filed on Apr. 18, 2024, as Appl. No. 18/639,220.
Application 18/639,220 is a continuation of application No. 18/498,597, filed on Oct. 31, 2023.
Application 18/498,597 is a continuation of application No. 18/314,965, filed on May 10, 2023, granted, now 11,902,668, issued on Feb. 13, 2024.
Application 18/314,965 is a continuation of application No. 17/579,225, filed on Jan. 19, 2022, granted, now 11,696,035, issued on Jul. 4, 2023.
Application 17/579,225 is a continuation of application No. 17/027,154, filed on Sep. 21, 2020, granted, now 11,483,476, issued on Oct. 25, 2022.
Application 17/027,154 is a continuation of application No. 16/372,287, filed on Apr. 1, 2019, abandoned.
Application 16/372,287 is a continuation of application No. PCT/KR2017/011138, filed on Oct. 10, 2017.
Claims priority of application No. 10-2016-0127887 (KR), filed on Oct. 4, 2016; application No. 10-2016-0129386 (KR), filed on Oct. 6, 2016; and application No. 10-2017-0090616 (KR), filed on Jul. 17, 2017.
Prior Publication US 2024/0267630 A1, Aug. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 23/698 (2023.01); G06T 3/40 (2024.01); H04N 13/161 (2018.01); H04N 19/103 (2014.01); H04N 19/105 (2014.01); H04N 19/11 (2014.01); H04N 19/119 (2014.01); H04N 19/124 (2014.01); H04N 19/129 (2014.01); H04N 19/13 (2014.01); H04N 19/134 (2014.01); H04N 19/159 (2014.01); H04N 19/167 (2014.01); H04N 19/172 (2014.01); H04N 19/176 (2014.01); H04N 19/597 (2014.01); H04N 19/625 (2014.01); H04N 19/70 (2014.01)
CPC H04N 23/698 (2023.01) [G06T 3/40 (2013.01); H04N 13/161 (2018.05); H04N 19/103 (2014.11); H04N 19/105 (2014.11); H04N 19/11 (2014.11); H04N 19/119 (2014.11); H04N 19/124 (2014.11); H04N 19/129 (2014.11); H04N 19/13 (2014.11); H04N 19/134 (2014.11); H04N 19/159 (2014.11); H04N 19/167 (2014.11); H04N 19/172 (2014.11); H04N 19/176 (2014.11); H04N 19/597 (2014.11); H04N 19/625 (2014.11); H04N 19/70 (2014.11)] 9 Claims
OG exemplary drawing
 
1. An image decoding method performed by an image decoding apparatus, the image decoding method comprising:
receiving a bitstream in which an image is encoded;
obtaining index information for specifying a block division type of a current block in the image from the bitstream;
determining the block division type of the current block from a candidate group pre-defined in the image decoding apparatus based on the index information;
dividing the current block into a plurality of sub-blocks based on the determined block division type; and
decoding each of the sub-blocks to reconstruct the current block,
wherein the current block is reconstructed based on a residual block for the current block,
wherein the candidate group includes at least one of a non-division, a first quad-division, a second quad-division, a binary-division or a triple-division,
wherein the first quad-division divides one coding block into four coding blocks based one horizontal line and one vertical line, the second quad-division divides one coding block into four coding blocks based on three horizontal lines or three vertical lines, the binary-division divides one coding block into two coding blocks, and the triple-division divides one coding block into three coding blocks, and
wherein the four coding blocks obtained by the first quad-division have a same size with each other.