US 12,238,332 B2
Prediction image generation device, moving image decoding device, and moving image coding device
Tomohiro Ikai, Sakai (JP)
Assigned to GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Dongguan (CN)
Filed by GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Dongguan (CN)
Filed on Aug. 9, 2023, as Appl. No. 18/231,898.
Application 18/231,898 is a continuation of application No. 17/727,325, filed on Apr. 22, 2022, granted, now 11,770,555.
Application 17/727,325 is a continuation of application No. 17/149,010, filed on Jan. 14, 2021, granted, now 11,317,115, issued on Apr. 26, 2022.
Application 17/149,010 is a continuation of application No. 16/074,049, granted, now 11,044,493, issued on Jun. 22, 2021, previously published as PCT/JP2017/002764, filed on Jan. 26, 2017.
Claims priority of application No. 2016-017444 (JP), filed on Feb. 1, 2016.
Prior Publication US 2023/0388539 A1, Nov. 30, 2023
Int. Cl. H04N 19/59 (2014.01); H04N 19/44 (2014.01); H04N 19/513 (2014.01); H04N 19/52 (2014.01); H04N 19/523 (2014.01)
CPC H04N 19/59 (2014.11) [H04N 19/45 (2014.11); H04N 19/513 (2014.11); H04N 19/52 (2014.11); H04N 19/523 (2014.11)] 9 Claims
OG exemplary drawing
 
1. A prediction image generation device for generating a prediction image by performing motion compensation on a reference image, the prediction image generation device comprising:
a filter circuitry configured to act on a motion vector applied image with 1/Mac pixel accuracy obtained by acting a motion vector on the reference image, wherein the filter circuitry causes filter processing using filter coefficients mcFilter [i][k] designated by a phase i, where i is an integer of 0 or greater and Mac-1 or less, and a filter coefficient position k, where k is an integer of 0 or greater and Ntaps-1 or less, Ntaps is the number of taps to act on the motion vector applied image, and
the filter coefficients mcFilter [i][k] have a relationship of a weighted average between filter coefficients mcFilter [p][k], where p is an integer of 0 or greater and p≠i, and filter coefficients mcFilter [q][k], where q is an integer of 0 or greater and q≠i.