US 12,413,710 B2
Video signal processing method and device using intra prediction filtering
Geonjung Ko, Seoul (KR); Dongcheol Kim, Suwon-Si (KR); Juhyung Son, Uiwang-Si (KR); Jaehong Jung, Seoul (KR); and Jinsam Kwak, Anyang-Si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Apr. 3, 2024, as Appl. No. 18/625,299.
Application 18/625,299 is a continuation of application No. 18/146,642, filed on Dec. 27, 2022, granted, now 11,956,424.
Application 18/146,642 is a continuation of application No. 17/333,887, filed on May 28, 2021, granted, now 11,632,543, issued on Apr. 18, 2023.
Application 17/333,887 is a continuation of application No. PCT/KR2019/016639, filed on Nov. 28, 2019.
Claims priority of application No. 10-2018-0150236 (KR), filed on Nov. 28, 2018; application No. 10-2019-0007196 (KR), filed on Jan. 18, 2019; and application No. 10-2019-0099887 (KR), filed on Aug. 14, 2019.
Prior Publication US 2024/0283910 A1, Aug. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/105 (2014.01); H04N 19/132 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/46 (2014.01); H04N 19/82 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/132 (2014.11); H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/46 (2014.11); H04N 19/82 (2014.11)] 4 Claims
OG exemplary drawing
 
1. A video signal decoding device comprising a processor,
wherein the processor is configured to:
when a prediction mode of a current block is an intra-prediction mode, obtain, from a bitstream, an ISP (Intra Sub Partitions) mode flag indicating whether to apply an ISP mode to the current block, and determine whether to apply the ISP mode to the current block according to the ISP mode flag;
generate a reference sample for the current block;
determine a value of a filter flag for specifying an interpolation filter applied to the reference sample, wherein the interpolation filter includes a plurality of filter coefficients;
generate a prediction sample of the current block by performing filtering for the reference sample by using the interpolation filter specified by the value of the filter flag; and
reconstruct the current block on the basis of the prediction sample,
wherein when it is determined that the ISP mode is applied on the current block, the value of the filter flag is determined to be a first value among a plurality of values, and
wherein when it is determined that the ISP mode is not applied on the current block, the value of the filter flag is determined to be any one among the plurality of values based on a size of the current block,
wherein the ISP mode flag is obtained based on which reference line is used among multiple reference lines.