US 11,863,754 B2
Method and for reconstructing chroma block and video decoding apparatus
Dong Gyu Sim, Seoul (KR); Sea Nae Park, Seoul (KR); Seung Wook Park, Gyeonggi-do (KR); and Wha Pyeong Lim, Gyeonggi-do (KR)
Assigned to Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and Kwangwoon University Industry-Academic Collaboration Foundation, Seoul (KR)
Appl. No. 17/611,466
Filed by Hyundai Motor Company, Seoul (KR); Kia Corporation, Seoul (KR); and Kwangwoon University Industry-Academic Collaboration Foundation, Seoul (KR)
PCT Filed May 15, 2020, PCT No. PCT/KR2020/006432
§ 371(c)(1), (2) Date Nov. 15, 2021,
PCT Pub. No. WO2020/231225, PCT Pub. Date Nov. 19, 2020.
Claims priority of application No. 10-2019-0056974 (KR), filed on May 15, 2019; and application No. 10-2020-0058335 (KR), filed on May 15, 2020.
Prior Publication US 2022/0217354 A1, Jul. 7, 2022
Int. Cl. H04N 19/132 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/132 (2014.11) [H04N 19/176 (2014.11); H04N 19/186 (2014.11); H04N 19/70 (2014.11)] 7 Claims
OG exemplary drawing
 
1. A video decoding apparatus for reconstructing a chroma block of a target block to be reconstructed, the video decoding apparatus comprising:
a decoder configured to decode correlation information between first residual samples and second residual samples, the first residual samples, and prediction information of the chroma block from a bitstream, wherein the first residual samples are residual samples of a first chroma component and the second residual samples are residual samples of a second chroma component;
a predictor configured to generate predicted samples of the first chroma component and predicted samples of the second chroma information on the basis of the prediction information;
a chroma component reconstruction unit configured to derive the second residual samples by applying the correlation information to the first residual samples; and
an adder configured to reconstruct a chroma block of the first chroma component by adding the first residual samples and the predicted samples of the first chroma component and configured to reconstruct a chroma block of the second chroma component by adding the second residual samples and predicted samples of the second chroma component.