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1. WO2020111240 - IMAGE DECODING DEVICE, IMAGE DECODING METHOD, AND IMAGE DECODING PROGRAM

Publication Number WO/2020/111240
Publication Date 04.06.2020
International Application No. PCT/JP2019/046812
International Filing Date 29.11.2019
IPC
H04N 19/119 2014.01
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
119Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
H04N 19/167 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
134characterised by the element, parameter or criterion affecting or controlling the adaptive coding
167Position within a video image, e.g. region of interest
H04N 19/176 2014.01
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 19/70 2014.01
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 19/119
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
119Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
H04N 19/167
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
134characterised by the element, parameter or criterion affecting or controlling the adaptive coding
167Position within a video image, e.g. region of interest [ROI]
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 19/70
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
Applicants
  • 株式会社JVCケンウッド JVCKENWOOD CORPORATION [JP]/[JP]
Inventors
  • 倉重 宏之 KURASHIGE Hiroyuki
Agents
  • 森下 賢樹 MORISHITA Sakaki
Priority Data
2018-22546730.11.2018JP
2019-18125801.10.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) IMAGE DECODING DEVICE, IMAGE DECODING METHOD, AND IMAGE DECODING PROGRAM
(FR) DISPOSITIF DE DÉCODAGE D'IMAGE, PROCÉDÉ DE DÉCODAGE D'IMAGE ET PROGRAMME DE DÉCODAGE D'IMAGE
(JA) 画像復号化装置、画像復号化方法及び画像復号化プログラム
Abstract
(EN)
According to the present invention, a block division unit includes: a four-division unit which divides, by four, a target block by dividing, by half, the target block in each of a horizontal direction and a vertical direction of the target block through recursive division and generates four blocks; and a two-three division unit which divides, by two or three, a target block in a horizontal direction or a vertical direction of the target block through recursive division and generates two or three blocks. When the target block is horizontally divided and the divided target block exceeds the right side of a picture boundary, the two or three-division unit prohibits the target block from being divided in the horizontal direction. When the target block is vertically divided and the divided target block exceeds the bottom side of a picture boundary, the two or three-division unit prohibits the target block from being divided in the vertical direction.
(FR)
Selon la présente invention, une unité de division de bloc comprend : une unité de division en quatre qui divise, en quatre, un bloc cible par la division, en deux, du bloc cible selon chacune d'une direction horizontale et d'une direction verticale du bloc cible par division récursive et qui génère quatre blocs ; et une unité de division en deux ou trois, qui divise, en deux ou en trois, un bloc cible selon une direction horizontale ou selon une direction verticale du bloc cible par division récursive et qui génère deux ou trois blocs. Lorsque le bloc cible est divisé horizontalement et que le bloc cible divisé dépasse le côté droit d'une limite d'image, l'unité de divisions en deux ou en trois empêche la division du bloc cible selon la direction horizontale. Lorsque le bloc cible est divisé verticalement et que le bloc cible divisé dépasse le côté inférieur d'une limite d'image, l'unité de division en deux ou en trois empêche la division du bloc selon la direction verticale.
(JA)
ブロック分割部は、再帰的分割における対象ブロックを水平方向と垂直方向とを各々半分に4分割して4つのブロックを生成する4分割部と、再帰的分割における対象ブロックを水平方向または垂直方向に2分割または3分割して2つまたは3つのブロックを生成する2-3分割部とを含み、2-3分割部は、対象ブロックを水平方向に分割したとすると、分割された対象ブロックがピクチャ境界の右側を超える場合は、対象ブロックを水平方向に分割することを禁止し、対象ブロックを垂直方向に分割したとすると、分割された対象ブロックがピクチャ境界の下側を超える場合は、対象ブロックを垂直方向に分割することを禁止する。
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