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1. JP2020182208 - IMAGE CODING DEVICE, IMAGE CODING METHOD, IMAGE CODING PROGRAM, IMAGE DECODING DEVICE, IMAGE DECODING METHOD, AND IMAGE DECODING PROGRAM

Office
Japan
Application Number 2019239373
Application Date 27.12.2019
Publication Number 2020182208
Publication Date 14.09.2020
Grant Number 6763469
Grant Date 14.09.2020
Publication Kind B1
IPC
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
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
Agents 松沼 泰史
小林 淳一
松本 裕幸
伊藤 英輔
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 technique for improving coding efficiency by performing block division suitable for image coding and decoding.

SOLUTION: An image coding device includes a coded information storage unit 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 unit that generates a merge candidate list that includes at least a motion vector and a reference index of a block adjacent to a coded block as a merge candidate, a history merge candidate addition unit that adds a history candidate included in the history prediction motion vector candidate list as a merge candidate to the merge candidate list and outputs a second merge candidate list, and a merge candidate selection unit that selects a merge candidate from the second merge candidate list as a selection merge candidate, and the coded information storage unit adds the selection merge candidate as a history candidate to the history prediction motion vector candidate list, and outputs the history prediction motion vector candidate list.

SELECTED DRAWING: Figure 2

COPYRIGHT: (C)2021,JPO&INPIT

(JA)

【課題】画像符号化及び復号化に適したブロック分割を行うことにより、符号化効率を向上させる技術を提供する。
【解決手段】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、前記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前記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、前記第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と、を備え、前記符号化情報格納部は、前記選択マージ候補を前記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前記履歴予測動きベクトル候補リストを出力する。
【選択図】図2

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