US 12,355,967 B2
Method and device for encoding/decoding images
Hui Yong Kim, Daejeon (KR); Sung Chang Lim, Daejeon (KR); Jin Ho Lee, Daejeon (KR); Jin Soo Choi, Daejeon (KR); Jin Woong Kim, Daejeon (KR); Gwang Hoon Park, Seongnam-si (KR); and Kyung Yong Kim, Suwon-si (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR); and UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY, Yongin-si (KR)
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR); and UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY, Yongin-si (KR)
Filed on May 2, 2024, as Appl. No. 18/653,636.
Application 18/653,636 is a continuation of application No. 18/160,976, filed on Jan. 27, 2023, granted, now 12,010,312.
Application 18/160,976 is a continuation of application No. 17/130,042, filed on Dec. 22, 2020, granted, now 11,595,655, issued on Feb. 28, 2023.
Application 17/130,042 is a continuation of application No. 16/999,252, filed on Aug. 21, 2020, granted, now 11,399,186, issued on Jul. 26, 2022.
Application 16/999,252 is a continuation of application No. 16/413,870, filed on May 16, 2019, granted, now 10,827,177, issued on Nov. 3, 2020.
Application 16/413,870 is a continuation of application No. 15/630,831, filed on Jun. 22, 2017, granted, now 10,341,661, issued on Jul. 2, 2019.
Application 15/630,831 is a continuation of application No. 15/255,035, filed on Sep. 1, 2016, granted, now 9,723,311, issued on Aug. 1, 2017.
Application 15/255,035 is a continuation of application No. 14/406,438, granted, now 9,497,465, issued on Nov. 15, 2016, previously published as PCT/KR2013/005616, filed on Jun. 25, 2013.
Claims priority of application No. 10-2012-0071446 (KR), filed on Jun. 29, 2012; and application No. 10-2013-0073067 (KR), filed on Jun. 25, 2013.
Prior Publication US 2024/0291989 A1, Aug. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/129 (2014.01); H04N 19/119 (2014.01); H04N 19/122 (2014.01); H04N 19/124 (2014.01); H04N 19/136 (2014.01); H04N 19/157 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/44 (2014.01); H04N 19/593 (2014.01); H04N 19/61 (2014.01); H04N 19/625 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/129 (2014.11) [H04N 19/119 (2014.11); H04N 19/122 (2014.11); H04N 19/124 (2014.11); H04N 19/136 (2014.11); H04N 19/157 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/44 (2014.11); H04N 19/593 (2014.11); H04N 19/61 (2014.11); H04N 19/625 (2014.11); H04N 19/70 (2014.11)] 10 Claims
OG exemplary drawing
 
1. A video decoding method, comprising:
obtaining first information indicating whether a residual signal is present in a current block;
determining a transform type of the current block, based on second information indicating whether or not an inverse-transform based on discrete cosine transform (DCT) or discrete sine transform (DST) is allowed;
acquiring transform coefficients from the residual signal of the current block based on a scanning direction for the residual signal of the current block, if the first information indicates that the residual signal is present in the current block;
performing the inverse-transform on the transform coefficients based on the determined transform type to obtain residual samples;
deriving an intra prediction mode of the current block;
obtaining prediction samples of the current block based on the intra prediction mode of the current block; and
reconstructing the current block based on the residual samples and the prediction samples,
wherein the scanning direction is determined based on the second information.