US 12,425,609 B2
Method and apparatus for encoding/decoding an image
Joo Hee Moon, Seoul (KR); Sung Won Lim, Seoul (KR); and Dong Jae Won, Goyang-si (KR)
Assigned to Industry Academy Cooperation Foundation of Sejong University, Seoul (KR)
Filed by Industry Academy Cooperation Foundation of Sejong University, Seoul (KR)
Filed on Nov. 16, 2022, as Appl. No. 17/988,100.
Application 17/988,100 is a continuation of application No. 17/318,020, filed on May 12, 2021, granted, now 12,096,002.
Application 17/318,020 is a continuation of application No. 16/341,590, granted, now 11,039,148, issued on Jun. 15, 2021, previously published as PCT/KR2017/011219, filed on Oct. 12, 2017.
Claims priority of application No. 10-2016-0133753 (KR), filed on Oct. 14, 2016; application No. 10-2016-0133755 (KR), filed on Oct. 14, 2016; application No. 10-2017-0127938 (KR), filed on Sep. 29, 2017; and application No. 10-2017-0127940 (KR), filed on Sep. 29, 2017.
Prior Publication US 2023/0073580 A1, Mar. 9, 2023
Int. Cl. H04N 19/159 (2014.01); H04N 19/105 (2014.01); H04N 19/11 (2014.01); H04N 19/119 (2014.01); H04N 19/176 (2014.01); H04N 19/46 (2014.01); H04N 19/59 (2014.01); H04N 19/61 (2014.01); H04N 19/80 (2014.01)
CPC H04N 19/159 (2014.11) [H04N 19/105 (2014.11); H04N 19/11 (2014.11); H04N 19/119 (2014.11); H04N 19/176 (2014.11); H04N 19/46 (2014.11); H04N 19/59 (2014.11); H04N 19/61 (2014.11); H04N 19/80 (2014.11)] 5 Claims
OG exemplary drawing
 
1. A video decoding method performed by a video decoding apparatus, the video decoding method comprising:
deriving an intra prediction mode of a current block from among a plurality of available intra prediction modes;
generating an intra prediction block of the current block based on the derived intra prediction mode; and
reconstructing the current block by adding the generated intra prediction block and a residual block of the current block,
wherein the deriving the intra prediction mode for the current block comprising:
determining whether to reset one or more intra prediction modes for the current block;
resetting the one or more intra prediction modes based on the determination, and
deriving the intra prediction mode of the current block based on the reset intra prediction modes,
wherein the resetting the one or more intra prediction modes is performed by resetting a first directional intra prediction mode having a predetermined prediction direction to a second directional intra prediction mode having a different predetermined prediction direction,
wherein the predetermined prediction direction is an upward prediction direction, and the different prediction direction is a left downward prediction direction.