US 12,010,337 B2
Encoders, decoders, methods, and video bit streams, and computer programs for hybrid video coding
Benjamin Bross, Berlin (DE); Martin Winken, Berlin (DE); Anastasia Henkel, Berlin (DE); Paul Keydel, Berlin (DE); Ivan Zupancic, Berlin (DE); Heiko Schwarz, Berlin (DE); Detlev Marpe, Berlin (DE); and Thomas Wiegand, Berlin (DE)
Assigned to Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Munich (DE)
Filed by Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Munich (DE)
Filed on Sep. 8, 2021, as Appl. No. 17/469,137.
Application 17/469,137 is a continuation of application No. PCT/EP2020/056730, filed on Mar. 12, 2020.
Claims priority of application No. 19162403 (EP), filed on Mar. 12, 2019.
Prior Publication US 2021/0409755 A1, Dec. 30, 2021
Int. Cl. H04N 19/463 (2014.01); H04N 19/117 (2014.01); H04N 19/186 (2014.01); H04N 19/52 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/52 (2014.11) [H04N 19/117 (2014.11); H04N 19/186 (2014.11); H04N 19/70 (2014.11)] 17 Claims
OG exemplary drawing
 
1. A video encoder configured to:
encode syntax elements comprising an indication of an adaptive motion vector resolution (AMVR) mode and an indication of whether an inter prediction mode is translational or affine for a coding block of a picture;
select, depending on the indicated AMVR mode and the indication of whether the inter prediction mode is translational or affine, a finite impulse response (FIR) interpolation filter from a plurality of FIR interpolation filters for obtaining a sample corresponding to a half-sample position of a reference picture of the coding block, the plurality of FIR interpolation filters comprising an interpolation filter with 6 nonzero coefficients of 3, 9, 20, 20, 9, 3 and an interpolation filter with 8 nonzero coefficients of −1, 4, −11, 40, 40, −11, 4, −1;
apply the selected FIR interpolation filter to samples of the reference picture to obtain the sample corresponding to the half-sample position; and
predict a sample of the coding block using the sample corresponding to the half-sample position.