US 12,120,352 B2
Method and apparatus for decoding a video signal
Jung Sun Kim, Seoul (KR); Seung Wook Park, Seoul (KR); Young Hee Choi, Seoul (KR); Jaewon Sung, Seoul (KR); Byeong Moon Jeon, Seoul (KR); and Joon Young Park, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Mar. 22, 2021, as Appl. No. 17/208,100.
Application 17/208,100 is a continuation of application No. 16/519,897, filed on Jul. 23, 2019, granted, now 10,986,372.
Application 16/519,897 is a continuation of application No. 15/993,229, filed on May 30, 2018, granted, now 10,405,001, issued on Sep. 3, 2019.
Application 15/993,229 is a continuation of application No. 15/460,013, filed on Mar. 15, 2017, granted, now 10,015,519, issued on Jul. 3, 2018.
Application 15/460,013 is a continuation of application No. 14/711,129, filed on May 13, 2015, granted, now 9,635,368, issued on Apr. 25, 2017.
Application 14/711,129 is a continuation of application No. 13/376,503, granted, now 9,100,648, issued on Aug. 4, 2015, previously published as PCT/KR2010/003639, filed on Jun. 7, 2010.
Claims priority of provisional application 61/290,250, filed on Dec. 28, 2009.
Claims priority of provisional application 61/290,251, filed on Dec. 28, 2009.
Claims priority of provisional application 61/288,323, filed on Dec. 20, 2009.
Claims priority of provisional application 61/257,844, filed on Nov. 4, 2009.
Claims priority of provisional application 61/184,834, filed on Jun. 7, 2009.
Claims priority of application No. 10-2010-0053253 (KR), filed on Jun. 7, 2010.
Prior Publication US 2021/0211726 A1, Jul. 8, 2021
Int. Cl. H04N 19/625 (2014.01); H04N 19/119 (2014.01); H04N 19/122 (2014.01); H04N 19/129 (2014.01); H04N 19/149 (2014.01); H04N 19/176 (2014.01); H04N 19/18 (2014.01); H04N 19/61 (2014.01)
CPC H04N 19/61 (2014.11) [H04N 19/119 (2014.11); H04N 19/122 (2014.11); H04N 19/129 (2014.11); H04N 19/149 (2014.11); H04N 19/176 (2014.11); H04N 19/18 (2014.11); H04N 19/625 (2014.11)] 3 Claims
OG exemplary drawing
 
1. A method for encoding a video signal by an encoding apparatus, the method comprising:
obtaining a prediction value of a current block by using inter prediction or intra prediction;
obtaining residual information of the current block based on the prediction value; and
encoding the current block by performing a first transform or a second transform based on the residual information,
wherein the encoding the current block comprises:
obtaining flag information indicating whether the current block includes a transform coefficient level not equal to 0;
obtaining transform type information indicating a transform type, the transform type specifying one among a first transform kernel for the first transform and a second transform kernel for the second transform, the first transform kernel being different from the second transform kernel; and
encoding the current block by using the first transform or the second transform based on the flag information and the transform type information,
wherein the current block is encoded by using the first transform based on that the transform type information has a value of 0 or the current block is not an intra block,
wherein the current block is encoded by using the second transform based on that the transform type information has a value of 1 and the current block is an intra block,
wherein a transform size equal to a size of a block for intra prediction is used based on intra prediction being used for the current block, and
wherein whether to use the first transform or the second transform is determined differently based on whether the intra prediction is used for the current block.