US 12,225,185 B2
Method and apparatus for encoding/decoding an image signal
Joo Hee Moon, Seoul (KR); Dong Jae Won, Goyang-si (KR); and Sung Won Lim, Seoul (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. 7, 2022, as Appl. No. 17/981,841.
Application 17/981,841 is a division of application No. 17/158,291, filed on Jan. 26, 2021, granted, now 11,533,470.
Application 17/158,291 is a continuation of application No. 16/478,223, filed on Jul. 16, 2019, granted, now 10,951,884.
Application 16/478,223 is a continuation of application No. PCT/KR2018/000729, filed on Jan. 16, 2018.
Claims priority of application No. 10-2017-0007349 (KR), filed on Jan. 16, 2017; application No. 10-2017-0007350 (KR), filed on Jan. 16, 2017; and application No. 10-2017-0007351 (KR), filed on Jan. 16, 2017.
Prior Publication US 2023/0066631 A1, Mar. 2, 2023
Int. Cl. H04N 19/103 (2014.01); H04N 19/117 (2014.01); H04N 19/119 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/51 (2014.01)
CPC H04N 19/103 (2014.11) [H04N 19/117 (2014.11); H04N 19/119 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/51 (2014.11)] 6 Claims
OG exemplary drawing
 
1. A method of decoding an image signal, comprising:
dividing a current coding block into a plurality of sub-blocks, the plurality of sub-blocks including a first sub-block and a second sub-block;
generating a prediction sample of the first sub-block by using an intra prediction mode derived from a neighboring block, the neighboring block including at least one of a rightmost neighboring block among top neighboring blocks adjacent to the current coding block or a bottommost neighboring block among left neighboring blocks adjacent to the current coding block; and
generating a prediction sample of the second sub-block by using the intra prediction mode used to generate the prediction sample of the first sub-block,
wherein the first sub-block includes a top-left pixel in the current coding block,
wherein the second sub-block includes a bottom-right pixel in the current coding block,
wherein a size of the second sub-block is ¼ of a size of the current coding block, and
wherein the intra prediction mode is a directional intra prediction mode or a non-directional intra prediction mode.