US 11,856,190 B2
Dynamic image decoding device, dynamic image decoding method, dynamic image decoding program, dynamic image encoding device, dynamic image encoding method, and dynamic image encoding program
Shigeru Fukushima, Kanagawa (JP); Hiroya Nakamura, Kanagawa (JP); Satoru Sakazume, Kanagawa (JP); Toru Kumakura, Kanagawa (JP); Hiroyuki Kurashige, Kanagawa (JP); and Hideki Takehara, Kanagawa (JP)
Assigned to JVCKENWOOD CORPORATION, Kanagawa (JP)
Filed by JVCKENWOOD Corporation, Kanagawa (JP)
Filed on Oct. 7, 2022, as Appl. No. 17/962,421.
Application 17/962,421 is a continuation of application No. 17/417,351, granted, now 11,503,283, previously published as PCT/JP2019/050103, filed on Dec. 20, 2019.
Claims priority of application No. 2018-247407 (JP), filed on Dec. 28, 2018; and application No. 2019-063065 (JP), filed on Mar. 28, 2019.
Prior Publication US 2023/0031647 A1, Feb. 2, 2023
Int. Cl. H04N 19/107 (2014.01); H04N 19/105 (2014.01); H04N 19/137 (2014.01); H04N 19/176 (2014.01); H04N 19/423 (2014.01)
CPC H04N 19/107 (2014.11) [H04N 19/105 (2014.11); H04N 19/137 (2014.11); H04N 19/176 (2014.11); H04N 19/423 (2014.11)] 7 Claims
OG exemplary drawing
 
1. A moving-picture decoding device comprising:
a spatial motion information candidate derivation unit configured to derive a spatial motion information candidate from motion information of a block neighboring a decoding target block in a space domain;
a temporal motion information candidate derivation unit configured to derive a temporal motion information candidate from motion information of a block neighboring a decoding target block in a time domain; and
a history-based motion information candidate derivation unit configured to derive a history-based motion information candidate from a memory for retaining motion information of a decoded block,
wherein the history-based motion information derivation unit is configured to add the temporal motion information candidate to a motion information candidate list without comparison between the spatial motion information candidate and the temporal motion information candidate with respect to the motion information, and to add the history-based motion information candidate to the motion information candidate list in case that the motion information of the spatial motion information candidate and the motion information of the history-based motion information candidate are not identical.