US 11,706,438 B2
Method and device for encoding and decoding image
Hui Yong Kim, Daejeon (KR); Jin Ho Lee, Daejeon (KR); Sung Chang Lim, Daejeon (KR); Jin Soo Choi, Daejeon (KR); and Jin Woong Kim, Daejeon (KR)
Assigned to Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed on Dec. 7, 2021, as Appl. No. 17/544,709.
Application 17/544,709 is a continuation of application No. 17/028,678, filed on Sep. 22, 2020, granted, now 11,228,778.
Application 17/028,678 is a continuation of application No. 16/430,348, filed on Jun. 3, 2019, granted, now 10,834,418, issued on Nov. 10, 2020.
Application 16/430,348 is a continuation of application No. 15/717,379, filed on Sep. 27, 2017, granted, now 10,397,598, issued on Aug. 27, 2019.
Application 15/717,379 is a continuation of application No. 14/372,278, granted, now 9,807,412, issued on Oct. 31, 2017, previously published as PCT/KR2013/000417, filed on Jan. 18, 2013.
Claims priority of application No. 10-2012-0005950 (KR), filed on Jan. 18, 2012; and application No. 10-2013-0005653 (KR), filed on Jan. 18, 2013.
Prior Publication US 2022/0094963 A1, Mar. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 11/02 (2006.01); H04N 19/51 (2014.01); H04N 19/196 (2014.01); H04N 19/82 (2014.01); H04N 19/513 (2014.01); H04N 19/593 (2014.01); H04N 19/105 (2014.01); H04N 19/182 (2014.01); H04N 19/42 (2014.01); H04N 19/52 (2014.01)
CPC H04N 19/51 (2014.11) [H04N 19/105 (2014.11); H04N 19/182 (2014.11); H04N 19/196 (2014.11); H04N 19/42 (2014.11); H04N 19/513 (2014.11); H04N 19/52 (2014.11); H04N 19/593 (2014.11); H04N 19/82 (2014.11)] 12 Claims
OG exemplary drawing
 
1. A video decoding method comprising:
generating a prediction block by performing intra prediction for a current block;
deriving transform coefficients of the current block by entropy-decoding a bitstream;
reconstructing a residual block by performing inverse-transformation on the derived transform coefficients; and
reconstructing the current block based on the reconstructed residual block and the prediction block,
wherein the generating the prediction block comprising
obtaining a first prediction value of a prediction target pixel of the prediction block;
determining an initial correction value of the prediction target pixel;
calculating a final correction value of the prediction target pixel by performing an arithmetic right shift on the initial correction value by a binary digit of n, n being an integer equal to or greater than 1; and
generating a final prediction value of the prediction target pixel based on the first prediction value and the final correction value.