US 11,659,165 B2
Video coding device and method using determined intra prediction mode based on upper boundary
Geonjung Ko, Seoul (KR); Juhyung Son, Gyeonggi-do (KR); Dongcheol Kim, Gyeonggi-do (KR); Jaehong Jung, Seoul (KR); and Jinsam Kwak, Gyeonggi-do (KR)
Assigned to HUMAX CO., LTD., Gyeonggi-Do (KR)
Filed by HUMAX CO., LTD., Gyeonggi-do (KR)
Filed on Aug. 25, 2021, as Appl. No. 17/412,212.
Application 17/412,212 is a continuation of application No. 16/907,081, filed on Jun. 19, 2020, granted, now 11,140,384.
Application 16/907,081 is a continuation of application No. PCT/KR2018/016604, filed on Dec. 24, 2018.
Claims priority of application No. 10-2017-0178796 (KR), filed on Dec. 22, 2017; application No. 10-2017-0178884 (KR), filed on Dec. 22, 2017; and application No. 10-2018-0034742 (KR), filed on Mar. 26, 2018.
Prior Publication US 2021/0385441 A1, Dec. 9, 2021
Int. Cl. H04N 19/105 (2014.01); H04N 19/132 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/132 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11)] 15 Claims
OG exemplary drawing
 
1. A video signal decoding device comprising a processor,
wherein the processor is configured to:
determine whether a coding tree block is divided into a plurality of blocks,
determine whether an upper boundary of a current block is adjacent to an upper boundary of the coding tree block,
wherein, when the coding tree block is divided, the coding tree block is divided in at least one of a horizontal direction and a vertical direction, and the current block is any one of the plurality of blocks,
wherein, when the coding tree block is not divided, the current block is the coding tree block,
determine a first intra prediction mode for prediction of the current block based on whether the upper boundary of the current block is adjacent to the upper boundary of the coding tree block,
reconstruct the current block based on the first intra prediction mode,
wherein the first intra prediction mode is one of prediction modes included in a first intra prediction mode set or a second intra prediction mode set,
wherein the first intra prediction mode set includes a plurality of angular modes, a planar mode, and a DC mode,
wherein the second intra prediction mode set includes a part of a plurality of prediction modes included in the first intra prediction mode set,
wherein the second intra prediction mode set includes a predefined number of angular modes determined based on an intra prediction mode corresponding to at least one of neighboring blocks of the current block.