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1. WO2012005551 - PROCÉDÉ ET APPAREIL DE CODAGE/DÉCODAGE ENTROPIQUE D'UN COEFFICIENT DE TRANSFORMÉE

Numéro de publication WO/2012/005551
Date de publication 12.01.2012
N° de la demande internationale PCT/KR2011/005034
Date du dépôt international 08.07.2011
CIB
H04N 7/26 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
26utilisant la réduction de la largeur de bande
H04N 7/50 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
26utilisant la réduction de la largeur de bande
50comportant un codage par transformation et par prédiction
CPC
H04N 19/129
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
129Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
H04N 19/13
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
13Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
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 19/18
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
18the unit being a set of transform coefficients
H04N 19/184
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
184the unit being bits, e.g. of the compressed video stream
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
  • 삼성전자 주식회사 SAMSUNG ELECTRONICS CO., LTD. [KR/KR]; 경기도 수원시 영통구 삼성로 129 129, Samsung-ro Yeongtong-gu, Suwon-si Gyeonggi-do 443-742, KR (AllExceptUS)
  • 이배근 LEE, Bae-Keun [KR/KR]; KR (UsOnly)
  • 손유미 SOHN, Yu-Mi [KR/KR]; KR (UsOnly)
Inventeurs
  • 이배근 LEE, Bae-Keun; KR
  • 손유미 SOHN, Yu-Mi; KR
Mandataires
  • 리앤목 특허법인 Y.P.LEE, MOCK & PARTNERS; 서울특별시 서초구 서초동 고려빌딩 1575-1 Koryo Building 1575-1 Seocho-dong, Seocho-gu Seoul 137-875, KR
Données relatives à la priorité
61/362,84409.07.2010US
Langue de publication coréen (KO)
Langue de dépôt coréen (KO)
États désignés
Titre
(EN) METHOD AND APPARATUS FOR ENTROPY ENCODING/DECODING A TRANSFORM COEFFICIENT
(FR) PROCÉDÉ ET APPAREIL DE CODAGE/DÉCODAGE ENTROPIQUE D'UN COEFFICIENT DE TRANSFORMÉE
(KO) 변환 계수의 엔트로피 부호화/복호화 방법 및 장치
Abrégé
(EN)
The present invention relates to a method and apparatus for entropy encoding a transform block, and to a method and apparatus for entropy decoding the transform block. The method for entropy encoding a transform coefficient according to one embodiment of the present invention involves: determining the location of the final active transform coefficient which is not zero from among the transform coefficients of a transform block of a predetermined size, according to a predetermined order of scanning; and encoding the location of the final active transform coefficient using the relative location in a horizontal axis direction and the relative location in a vertical axis direction in the transform block.
(FR)
La présente invention porte sur un procédé et un appareil de codage entropique d'un bloc de transformée, et sur un procédé et un appareil de décodage entropique du bloc de transformée. Le procédé de codage entropique d'un coefficient de transformée selon un mode de réalisation de la présente invention consiste à : déterminer l'emplacement du coefficient de transformée actif final qui n'est pas nul parmi les coefficients de transformée d'un bloc de transformée d'une taille prédéterminée, conformément à un ordre de balayage prédéterminé ; et coder l'emplacement du coefficient de transformée actif final à l'aide de l'emplacement relatif dans une direction d'axe horizontal et de l'emplacement relatif dans une direction d'axe vertical dans le bloc de transformée.
(KO)
변환 블록의 엔트로피 부호화 방법 및 장치, 그 복호화 방법 및 장치가 개시된다. 본 발명의 일 실시예에 따른 변환 계수의 엔트로피 부호화 방법은 소정 스캐닝 순서에 따라서 소정 크기의 변환 블록에 구비된 변환 계수들 중에서 0이 아닌 마지막 유효 변환 계수의 위치를 결정하고, 변환 블록 내의 가로축 방향으로의 상대적 위치 및 세로축 방향으로의 상대적 위치를 이용하여 마지막 유효 변환 계수의 위치를 부호화한다.
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