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1. EP3130147 - METHOD OF BLOCK VECTOR PREDICTION FOR INTRA BLOCK COPY MODE CODING

Office
European Patent Office
Application Number 15788974
Application Date 05.05.2015
Publication Number 3130147
Publication Date 15.02.2017
Publication Kind A4
IPC
H04N 19/593
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
50using predictive coding
593involving spatial prediction techniques
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
CPC
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 19/593
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
50using predictive coding
593involving spatial prediction techniques
H04N 19/11
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
11among a plurality of spatial predictive coding modes
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 19/44
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
44Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
Applicants HFI INNOVATION INC
Inventors XU XIAOZHONG
LIU SHAN
CHUANG TZU-DER
Designated States
Priority Data 201461989055 06.05.2014 US
201462015711 23.06.2014 US
Title
(DE) VERFAHREN ZUR BLOCKVEKTORVORHERSAGE ZUR INTRABLOCK-KOPIERMODUSCODIERUNG
(EN) METHOD OF BLOCK VECTOR PREDICTION FOR INTRA BLOCK COPY MODE CODING
(FR) PROCÉDÉ DE PRÉDICTION DE VECTEUR DE BLOC POUR CODAGE À MODE DE COPIE DE BLOC INTRA
Abstract
(EN)
A method of block vector (BV) prediction for an IntraBC mode (Intra-block copy mode) coded block in a video coding system according to the present invention is disclosed. Multiple BV candidate lists are derived from neighboring blocks of the current block. A BV candidate list is selected as a BV predictor for the BV of the current block. The current block is coded based on an Intra reference block located according to the BV of the current block. In one embodiment, a left-bottom (LB) block of the current block is used to derive the first BV candidate list and an above-right (AR) block of the current block is used to derive the second BV candidate list. A 1-bit index code is signaled to select a BV predictor between the first BV candidate list and the second BV candidate list.

(FR)
La présente invention concerne un procédé de prédiction de vecteur de bloc (BV) pour un bloc codé en mode IntraBC (mode de copie de bloc intra) dans un système de codage vidéo. De multiples listes de BV candidats sont obtenues à partir de blocs voisins du bloc courant. Une liste de BV candidats est sélectionnée à titre de prédicteur de BV pour le BV du bloc courant. Le bloc courant est codé sur la base d'un bloc de référence intra localisé conformément au BV du bloc courant. Dans un mode de réalisation, un bloc au-dessous à gauche (LB) du bloc courant est utilisé pour obtenir la première liste de BV candidats et un bloc au-dessus à droite (AR) du bloc courant est utilisé pour obtenir la seconde liste de BV candidats. Un code d'indice à 1 bit est signalé pour sélectionner un prédicteur de BV entre la première liste de BV candidats et la seconde liste de BV candidats.