US 12,225,296 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 Nov. 30, 2023, as Appl. No. 18/524,452.
Application 18/524,452 is a continuation of application No. 18/314,965, filed on May 10, 2023, granted, now 11,902,668.
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 2024/0098372 A1, Mar. 21, 2024
Int. Cl. H04N 19/11 (2014.01); G06T 3/40 (2024.01); H04N 13/161 (2018.01); H04N 19/103 (2014.01); H04N 19/105 (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); H04N 23/698 (2023.01)
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)] 8 Claims
OG exemplary drawing
 
1. A method of decoding a current image with a decoding apparatus, comprising:
obtaining coding information for the current image from a bitstream;
dividing a coding block in the current image to obtain one or more sub-blocks based on the coding information,
wherein the coding information includes at least one of a first flag indicating whether to divide the coding block to obtain one or more sub-blocks or a second flag indicating whether to divide the coding block asymmetrically, and
wherein, in case the coding block is divided asymmetrically, a first sub-block having a ¼ size of the coding block is obtained, the first sub-block belonging to the one or more sub-blocks;
obtaining inverse-quantized coefficients of the first sub-block by performing inverse-quantization on the first sub-block;
reconstructing a residual signal of the first sub-block by performing inverse-transform on the inverse-quantized coefficients; and
reconstructing the coding block based on the residual signal, and
wherein obtaining the inverse-quantized coefficients of the first sub-block comprises:
selecting one of a plurality of weight set candidates pre-defined in the decoding apparatus; and
performing the inverse-quantization on the first sub-block based on the selected weight set candidate.