US 11,743,472 B2
Method and apparatus for processing video signal
Bae Keun Lee, Seoul (KR); and Joo Young Kim, Seoul (KR)
Assigned to KT CORPORATION, Gyeonggi-do (KR)
Filed by KT CORPORATION, Gyeonggi-do (KR)
Filed on Jun. 24, 2021, as Appl. No. 17/357,381.
Application 17/357,381 is a continuation of application No. 16/705,562, filed on Dec. 6, 2019, granted, now 11,076,159.
Application 16/705,562 is a continuation of application No. 16/278,387, filed on Feb. 18, 2019, granted, now 10,523,950, issued on Dec. 31, 2019.
Application 16/278,387 is a continuation of application No. 15/511,764, granted, now 10,257,521, issued on Apr. 9, 2019, previously published as PCT/KR2015/010282, filed on Sep. 30, 2015.
Claims priority of application No. 10-2014-0132470 (KR), filed on Oct. 1, 2014; and application No. 10-2014-0135514 (KR), filed on Oct. 8, 2014.
Prior Publication US 2021/0329258 A1, Oct. 21, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/159 (2014.01); H04N 19/50 (2014.01); H04N 19/70 (2014.01); H04N 19/182 (2014.01); H04N 19/105 (2014.01); H04N 19/436 (2014.01); H04N 19/513 (2014.01); H04N 19/93 (2014.01); H04N 19/94 (2014.01)
CPC H04N 19/159 (2014.11) [H04N 19/105 (2014.11); H04N 19/182 (2014.11); H04N 19/436 (2014.11); H04N 19/50 (2014.11); H04N 19/513 (2014.11); H04N 19/70 (2014.11); H04N 19/93 (2014.11); H04N 19/94 (2014.11)] 9 Claims
OG exemplary drawing
 
1. A method of decoding a video signal, the method comprising:
obtaining at least one palette entry of a current block from a palette map of a previous block;
deriving a palette index according to a predetermined scan order of the current block on a sample-by-sample basis;
constructing a palette map of the current block including at least one palette entry and the palette index; and
restoring each sample of the current block by using the palette map,
wherein the palette entry comprises at least one of a predicted palette entry and a signaled palette entry, and wherein the predicted palette entry means a palette entry reused in the current block among palette entries included in the palette map of the previous block, and the signaled palette entry indicates a palette entry not included in the palette map of the previous block among the palette entries used by the current block, and
wherein the predicted palette entry is derived from information about palette entry run, the information about palette entry run is used to determine a number of zeros that precede a non-zero entry in palette entries in the previous block.