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1. JP2020205624 - IMAGE CODING DEVICE, IMAGE CODING METHOD, IMAGE CODING PROGRAM, IMAGE DECODING DEVICE, IMAGE DECODING METHOD, AND IMAGE DECODING PROGRAM

Office
Japan
Application Number 2020151409
Application Date 09.09.2020
Publication Number 2020205624
Publication Date 24.12.2020
Grant Number 6936448
Grant Date 31.08.2021
Publication Kind B2
CPC
H04N 19/176
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
169characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
17the unit being an image region, e.g. an object
176the region being a block, e.g. a macroblock
H04N 19/513
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
50using predictive coding
503involving temporal prediction
51Motion estimation or motion compensation
513Processing of motion vectors
H04N 19/52
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
50using predictive coding
503involving temporal prediction
51Motion estimation or motion compensation
513Processing of motion vectors
517by encoding
52by predictive encoding
H04N 19/70
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
70characterised by syntax aspects related to video coding, e.g. related to compression standards
H04N 19/105
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
102characterised by the element, parameter or selection affected or controlled by the adaptive coding
103Selection of coding mode or of prediction mode
105Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
Applicants JVC KENWOOD CORP
株式会社JVCケンウッド
Inventors TAKEHARA HIDEKI
竹原 英樹
NAKAMURA HIROYA
中村 博哉
SAKAZUME SATOSHI
坂爪 智
FUKUSHIMA SHIGERU
福島 茂
KUMAKURA TORU
熊倉 徹
KURASHIGE HIROYUKI
倉重 宏之
Priority Data 2018247413 28.12.2018 JP
2019082764 24.04.2019 JP
Title
(EN) IMAGE CODING DEVICE, IMAGE CODING METHOD, IMAGE CODING PROGRAM, IMAGE DECODING DEVICE, IMAGE DECODING METHOD, AND IMAGE DECODING PROGRAM
(JA) 画像符号化装置、画像符号化方法、画像符号化プログラム、画像復号装置、画像復号方法及び画像復号プログラム
Abstract
(EN)

PROBLEM TO BE SOLVED: To provide a highly efficient image coding and decoding technology which reduces a processing load.

SOLUTION: In an image coding device, an inter prediction portion includes a coded information storage portion that fills all history candidates in a history prediction motion vector candidate list with at least a predetermined motion vector and a reference index, a merge candidate list generation portion that generates a merge candidate list that includes at least the motion vector and the reference index of the blocks adjacent to a coded block as merge candidates, a history merge candidate addition portion that adds the history candidates included in the history prediction motion vector candidate list as merge candidates to the merge candidate list and outputs a second merge candidate list, and a merge candidate selection portion that selects a merge candidate from the second merge candidate list as a merge candidate. The coded information storage portion adds the selected merge candidate as a history candidate to the history prediction motion vector candidate list and outputs a history prediction motion vector candidate list.

SELECTED DRAWING: Figure 22

COPYRIGHT: (C)2021,JPO&INPIT

(JA)

【課題】処理負荷を低減し、高効率な画像符号化及び復号化技術を提供する。
【解決手段】画像復号装置において、インター予測部は、履歴予測動きベクトル候補リストの全ての履歴候補を少なくとも所定の動きベクトルと参照インデックスで充填する符号化情報格納部と、符号化対象ブロックに隣接するブロックの少なくとも動きベクトルと参照インデックスをマージ候補として含むマージ候補リストを生成するマージ候補リスト生成部と、履歴予測動きベクトル候補リストに含まれる履歴候補をマージ候補リストにマージ候補として追加して、第2のマージ候補リストを出力する履歴マージ候補追加部と、第2のマージ候補リストからマージ候補を選択マージ候補として選択するマージ候補選択部、を備える。符号化情報格納部は、選択マージ候補を履歴予測動きベクトル候補リストに履歴候補として追加して履歴予測動きベクトル候補リストを出力する。
【選択図】図22

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