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1. WO2010032941 - APPAREIL ET PROCÉDÉ PERMETTANT DE CODAGE/DÉCODAGE D'IMAGE AU MOYEN DE LA PRÉVISIBILITÉ D'UN MODE-INTRA-PRÉDICTION

Numéro de publication WO/2010/032941
Date de publication 25.03.2010
N° de la demande internationale PCT/KR2009/005227
Date du dépôt international 15.09.2009
CIB
H04N 7/24 2006.01
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
NTRANSMISSION D'IMAGES, p.ex. TÉLÉVISION
7Systèmes de télévision
24Systèmes pour la transmission de signaux de télévision utilisant la modulation par impulsions codées
CPC
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 19/147
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
146Data rate or code amount at the encoder output
147according to rate distortion criteria
H04N 19/16
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
157Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
16for a given display mode, e.g. for interlaced or progressive display mode
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 19/196
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
189characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding
196being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters
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
Déposants
  • 에스케이텔레콤 주식회사 SK TELECOM CO., LTD. [KR]/[KR] (AllExceptUS)
  • 김하윤 KIM, Hayoon [KR]/[KR] (UsOnly)
  • 전병우 JEON, Byeungwoo [KR]/[KR] (UsOnly)
  • 문주희 MOON, Joohee [KR]/[KR] (UsOnly)
  • 이영렬 LEE, Yunglyul [KR]/[KR] (UsOnly)
  • 김해광 KIM, Haekwang [KR]/[KR] (UsOnly)
  • 양정엽 YANG, Jungyoup [KR]/[KR] (UsOnly)
  • 원광현 WON, Kwanghyun [KR]/[KR] (UsOnly)
Inventeurs
  • 김하윤 KIM, Hayoon
  • 전병우 JEON, Byeungwoo
  • 문주희 MOON, Joohee
  • 이영렬 LEE, Yunglyul
  • 김해광 KIM, Haekwang
  • 양정엽 YANG, Jungyoup
  • 원광현 WON, Kwanghyun
Mandataires
  • 이철희 LEE, Chulhee
Données relatives à la priorité
10-2008-009265422.09.2008KR
Langue de publication coréen (KO)
Langue de dépôt coréen (KO)
États désignés
Titre
(EN) APPARATUS AND METHOD FOR IMAGE ENCODING/DECODING USING PREDICTABILITY OF INTRA-PREDICTION MODE
(FR) APPAREIL ET PROCÉDÉ PERMETTANT DE CODAGE/DÉCODAGE D'IMAGE AU MOYEN DE LA PRÉVISIBILITÉ D'UN MODE-INTRA-PRÉDICTION
(KO) 인트라 예측 모드의 예측 가능성을 이용한 영상 부호화/복호화 장치 및 방법
Abrégé
(EN)
The present invention relates to an apparatus and a method for image encoding/decoding using predictability of an intra-prediction mode. The image encoding apparatus of the present invention comprises: an intra-prediction mode determination unit for determining an encoder prediction mode which is an intra-prediction mode of the present block of image; an encoding unit for estimating the present block in accordance with the encoder prediction mode, and encoding the residual block using the difference between the estimated block and the present block; a mode information generating unit for generating mode information in accordance with whether or not the image decoding apparatus can predict the encoder prediction mode; and an encoded data generating unit for generating encoded data containing the encoded residual block and mode information. The present invention can enhance compression in image encoding/decoding by minimizing the number of bits for encoding information of an intra-prediction mode in image prediction using intra prediction.
(FR)
La présente invention concerne un appareil et un procédé permettant le codage/décodage d'image au moyen de la prévisibilité d'un mode intra-prédiction. L'appareil de codage d'image décrit dans l'invention comprend un bloc de détermination de mode intra-prédiction pour déterminer un mode de prédiction de codeur qui est un mode intra-prédiction du bloc d'image en cours; un bloc de codage pour estimer le bloc d'image en cours en fonction du mode de prédiction du codeur, et pour coder le bloc restant au moyen de la différence entre le bloc estimé et le bloc en cours; un bloc de génération d'information de bloc pour générer des informations de mode selon que l'appareil de décodage d'image peut ou non prédire le mode de prédiction du codeur; et un bloc de génération de données codées pour générer des données codées contenant le bloc restant codé et des informations de mode. Le mode de réalisation décrit dans l'invention peut améliorer la compression dans le codage/décodage d'image par réduction du nombre de bits pour des informations de codage d'un mode intra-prédiction lors de la prédiction d'image utilisant l'intra-prédiction.
(KO)
본 발명은 인트라 예측 모드의 예측 가능성을 이용한 영상 부호화/복호화 장치 및 방법에 관한 것이다. 본 발명은 영상을 부호화하는 장치에 있어서, 영상의 현재 블록의 인트라 예측 모드인 부호화기 예측 모드를 결정하는 인트라 예측 모드 결정부; 부호화기 예측 모드에 따라 현재 블록을 예측하여 생성한 예측 블록과 현재 블록을 감산하여 생성한 잔차 블록을 부호화하는 부호화부; 영상 복호화 장치에서 부호화기 예측 모드를 예측할 수 있는지 여부에 따라 모드 정보를 생성하는 모드 정보 생성부; 및 부호화된 잔차 블록과 모드 정보를 포함하는 부호화 데이터를 생성하는 부호화 데이터 생성부를 포함하는 것을 특징으로 하는 영상 부호화 장치를 제공한다. 본 발명에 의하면, 영상을 부호화하거나 복호화하는 데 있어서, 인트라 예측을 이용하여 영상을 예측할 때 인트라 예측 모드에 대한 정보를 부호화하기 위한 비트량을 최소화하여 압축 성능을 향상시킬 수 있다.
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