US 12,284,388 B2
Encoding method and apparatus therefor, and decoding method and apparatus therefor
Yinji Piao, Suwon-si (KR); Elena Alshina, Seoul (KR); Alexander Alshin, Seoul (KR); and Anish Tamse, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Oct. 24, 2023, as Appl. No. 18/493,359.
Application 18/493,359 is a continuation of application No. 16/959,726, granted, now 11,825,117, previously published as PCT/KR2019/000198, filed on Jan. 7, 2019.
Claims priority of provisional application 62/617,335, filed on Jan. 15, 2018.
Prior Publication US 2024/0056605 A1, Feb. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/615 (2014.01); H04N 19/105 (2014.01); H04N 19/109 (2014.01); H04N 19/117 (2014.01); H04N 19/176 (2014.01); H04N 19/423 (2014.01)
CPC H04N 19/615 (2014.11) [H04N 19/105 (2014.11); H04N 19/109 (2014.11); H04N 19/117 (2014.11); H04N 19/176 (2014.11); H04N 19/423 (2014.11)] 4 Claims
OG exemplary drawing
 
1. A video decoding method comprising:
when an inter prediction mode of a current block is an affine mode:
determining a reference sample location to be referred to for decoding the current block using a motion vector of the current block determined using two or three motion vector predictors for two or three vertices among a plurality of vertices of the current block;
when it is identified that an inter prediction mode of a sub block included in the current block is the affine mode based on the inter prediction mode of the current block, determining a first interpolation filter among a plurality of interpolation filters corresponding to a size of the sub block, wherein a number of filter coefficients of the first interpolation filter is eight;
applying the first interpolation filter to a reconstructed reference samples corresponding to the reference sample location to generate a prediction sample of the sub block; and
decoding the current block using the prediction sample of the sub block, and
when the inter prediction mode of the current block is a decoder side motion vector refinement (DMVR) mode:
determining a second interpolation filter among a plurality of interpolation filters corresponding to the DMVR mode, wherein a number of filter coefficients of the second interpolation filter is two;
applying the second interpolation filter to reconstructed reference samples to generate a prediction sample of the current block; and
decoding the current block using the prediction sample of the current block.