US 12,382,019 B2
Method and device for encoding/decoding image, and recording medium storing bit stream
Jin Ho Lee, Daejeon (KR); Hyun Suk Ko, Daejeon (KR); Jung Won Kang, Daejeon (KR); Sung Chang Lim, Daejeon (KR); Ha Hyun Lee, Seoul (KR); Dong San Jun, Daejeon (KR); Seung Hyun Cho, Daejeon (KR); Hui Yong Kim, Daejeon (KR); and Jin Soo Choi, Daejeon (KR)
Assigned to LX SEMICON CO., LTD., Daejeon (KR)
Filed by LX Semicon Co., Ltd., Daejeon (KR)
Filed on Jul. 24, 2023, as Appl. No. 18/225,212.
Application 18/225,212 is a continuation of application No. 17/523,025, filed on Nov. 10, 2021, granted, now 11,902,509.
Application 17/523,025 is a continuation of application No. 16/336,219, granted, now 11,202,063, issued on Dec. 14, 2021, previously published as PCT/KR2017/010469, filed on Sep. 22, 2017.
Claims priority of application No. 10-2016-0127874 (KR), filed on Oct. 4, 2016.
Prior Publication US 2023/0362355 A1, Nov. 9, 2023
Int. Cl. H04N 19/105 (2014.01); H04N 19/11 (2014.01); H04N 19/117 (2014.01); H04N 19/119 (2014.01); H04N 19/159 (2014.01); H04N 19/172 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01); H04N 19/51 (2014.01); H04N 19/593 (2014.01); H04N 19/70 (2014.01); H04N 19/80 (2014.01); H04N 19/91 (2014.01); H04N 19/96 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/11 (2014.11); H04N 19/117 (2014.11); H04N 19/119 (2014.11); H04N 19/159 (2014.11); H04N 19/172 (2014.11); H04N 19/176 (2014.11); H04N 19/186 (2014.11); H04N 19/51 (2014.11); H04N 19/593 (2014.11); H04N 19/70 (2014.11); H04N 19/80 (2014.11); H04N 19/91 (2014.11); H04N 19/96 (2014.11)] 3 Claims
OG exemplary drawing
 
1. An image decoding method performed by a decoding apparatus, the method comprising:
obtaining, from a bitstream, prediction mode information;
determining a prediction mode for a chroma block based on the prediction mode information;
deriving a reconstructed luma block for a luma block related to the chroma block;
deriving a predicted block of the chroma block based on the prediction mode and the reconstructed luma block; and
generating a reconstructed chroma block based on the predicted block of the chroma block,
wherein deriving the predicted block of the chroma block comprising:
reconfiguring the reconstructed lima block;
deriving a first predicted block for the chroma block based on one of intra prediction modes, wherein the intra prediction modes include a DC mode; and
deriving a second predicted block for the chroma block based on the reconfigured reconstructed huma block,
wherein the predicted block of the chroma block is derived based on the first predicted block and the second predicted block;
wherein the reconfigured reconstructed luma block has the same size as the chroma block.