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1. WO2020137125 - IMAGE DECODING DEVICE, IMAGE ENCODING DEVICE, PROGRAM, AND IMAGE PROCESSING SYSTEM

Publication Number WO/2020/137125
Publication Date 02.07.2020
International Application No. PCT/JP2019/041872
International Filing Date 25.10.2019
IPC
H04N 19/513 2014.1
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 19/46 2014.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
46Embedding additional information in the video signal during the compression process
CPC
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
H04N 19/122
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
12Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
122Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
H04N 19/136
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
136Incoming video signal characteristics or properties
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 19/436
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
42characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
436using parallelised computational arrangements
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
Applicants
  • KDDI株式会社 KDDI CORPORATION [JP]/[JP]
Inventors
  • 海野 恭平 UNNO, Kyohei
  • 河村 圭 KAWAMURA, Kei
  • 内藤 整 NAITOU, Sei
Agents
  • キュリーズ特許業務法人 CURIUSE PATENT PROFESSIONAL CORPORATION
Priority Data
2018-24589527.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) IMAGE DECODING DEVICE, IMAGE ENCODING DEVICE, PROGRAM, AND IMAGE PROCESSING SYSTEM
(FR) DISPOSITIF DE DÉCODAGE D'IMAGES, DISPOSITIF DE CODAGE D'IMAGE, PROGRAMME ET SYSTÈME DE TRAITEMENT D'IMAGES
(JA) 画像復号装置、画像符号化装置、プログラム及び画像処理システム
Abstract
(EN)
This image decoding device 200 comprises: a motion vector decoding unit 241A configured to acquire a motion vector from encoded data; and a refining unit 241B configured to change a region used in the refining of the motion vector, such change carried out using information on the width and/or height of a block that uses the motion vector.
(FR)
Ce dispositif de décodage d'image 200 comprend: une unité de décodage de vecteur de mouvement 241A configurée pour acquérir un vecteur de mouvement à partir de données codées; et une unité d'affinage 241B configurée pour modifier une région utilisée dans l'affinage du vecteur de mouvement, un tel changement étant effectué à l'aide d'informations sur la largeur et/ou la hauteur d'un bloc qui utilise le vecteur de mouvement.
(JA)
本発明に係る画像復号装置200は、符号化データから動きベクトルを取得するように構成されている動きベクトル復号部241Aと、動きベクトルを用いるブロックの幅と高さの少なくともいずれかの情報を用いて、動きベクトルの洗練化に使用する領域を変更するように構成されている洗練化部241Bとを備える。
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