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1. WO2020139184 - GENERATING A MOTION VECTOR PREDICTOR LIST

Publication Number WO/2020/139184
Publication Date 02.07.2020
International Application No. PCT/SE2019/051320
International Filing Date 19.12.2019
IPC
H04N 19/513 2014.01
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 19/105 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
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 19/176 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 19/139 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
136Incoming video signal characteristics or properties
137Motion inside a coding unit, e.g. average field, frame or block difference
139Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
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 19/139
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
137Motion inside a coding unit, e.g. average field, frame or block difference
139Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
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
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) [SE]/[SE]
Inventors
  • YU, Ruoyang
  • SJÖBERG, Rickard
  • ANDERSSON, Kenneth
  • WENNERSTEN, Per
  • LIU, Du
Agents
  • LUNDQVIST, Alida
Priority Data
62/785,87228.12.2018US
62/786,25328.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) GENERATING A MOTION VECTOR PREDICTOR LIST
(FR) GÉNÉRATION D'UNE LISTE DE PRÉDICTEURS DE VECTEUR DE MOUVEMENT
Abstract
(EN)
A decoder can be configured to obtain a current inter block and a plurality of previously decoded inter blocks. Each inter block of the plurality of inter blocks can include a motion vector having a resolution. The decoder generate a list of motion vector predictor candidates that is used to predict the motion vector that is associated with the current inter block. Generating the list of motion vector predictor candidates can include defining a set of inter blocks that includes a number of previously decoded inter blocks; scanning the inter blocks in the set of inter blocks in a scanning order; and for each of the inter blocks in the set of inter blocks: deriving a motion vector prediction candidate using the motion vector of the inter block; and determining whether a criterion is satisfied.
(FR)
L'invention concerne un décodeur qui peut être configuré pour obtenir un bloc inter courant et une pluralité de blocs inter précédemment décodés. Chaque bloc inter de la pluralité de blocs inter peut comprendre un vecteur de mouvement comprenant une résolution. Le décodeur génère une liste de candidats prédicateurs de vecteur de mouvement qui est utilisée pour prédire le vecteur de mouvement qui est associé au bloc inter courant. La génération de la liste de candidats prédicateurs de vecteur de mouvement peut comprendre la définition d'un ensemble de blocs inter qui comprend un certain nombre de blocs inter précédemment décodés; le balayage des blocs inter dans l'ensemble de blocs inter dans un ordre de balayage; et pour chacun des blocs inter dans l'ensemble de blocs inter : la dérivation d'un candidat de prédiction de vecteur de mouvement à l'aide du vecteur de mouvement du bloc inter; et la détermination quant au fait de savoir si un critère est satisfait.
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