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1. (WO2018105759) IMAGE ENCODING/DECODING METHOD AND APPARATUS THEREFOR
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Pub. No.: WO/2018/105759 International Application No.: PCT/KR2016/014171
Publication Date: 14.06.2018 International Filing Date: 05.12.2016
IPC:
H04N 19/132 (2014.01) ,H04N 19/11 (2014.01) ,H04N 19/105 (2014.01) ,H04N 19/176 (2014.01) ,H04N 19/44 (2014.01)
[IPC code unknown for H04N 19/132][IPC code unknown for H04N 19/11][IPC code unknown for H04N 19/105][IPC code unknown for H04N 19/176][IPC code unknown for H04N 19/44]
Applicants:
엘지전자(주) LG ELECTRONICS INC. [KR/KR]; 서울시 영등포구 여의대로 128 128, Yeoui-daero, Yeongdeungpo-gu, Seoul 07336, KR
Inventors:
허진 HEO, Jin; KR
Agent:
특허법인 로얄 ROYAL PATENT & LAW OFFICE; 서울시 관악구 남부순환로 2072, 도원회관 빌딩 1층 1F., Dowon Bldg., 2072 Nambusunhwan-no, Gwanak-gu, Seoul 08806, KR
Priority Data:
Title (EN) IMAGE ENCODING/DECODING METHOD AND APPARATUS THEREFOR
(FR) PROCÉDÉ DE CODAGE/DÉCODAGE D'IMAGE ET APPAREIL ASSOCIÉ
(KO) 영상 부호화/복호화 방법 및 이를 위한 장치
Abstract:
(EN) An image encoding/decoding method and an apparatus therefor are disclosed in the present invention. Specifically, a method for decoding a image by a decoding apparatus comprises: a step of deriving an intra prediction mode of a current block; a step of configuring reference samples with neighboring samples at the top end of the current block and neighboring samples to the left side thereof; and, when the intra prediction mode is a vertical/horizontal strong mode, a step of generating a prediction sample using a reference sample having the same x-coordinate as that of the sample, a reference sample having the same y-coordinate as that of the sample, a reference sample neighboring to the lower left end of the current block, and a reference sample neighboring to the upper right end of the current block, among the reference samples for each sample in the current block, wherein a weight w1 applied to the reference sample having the same y-coordinate as that of the sample and the reference sample neighboring the upper right end of the current block and the weight w2 applied to the reference sample having the same x-coordinate as that of the sample and the reference sample neighboring the lower left end of the current block can be set differently from each other.
(FR) La présente invention concerne un procédé de codage/décodage d'image et un appareil associé. Plus particulièrement, l'invention concerne un procédé de décodage d'une image par un appareil de décodage qui consiste à : une étape consistant à dériver un mode de prédiction intra d'un bloc courant ; une étape de configuration d'échantillons de référence avec des échantillons voisins au niveau de l'extrémité supérieure du bloc courant et des échantillons voisins vers le côté gauche de celui-ci ; et, lorsque le mode de prédiction intra est un mode fort vertical/horizontal, une étape de génération d'un échantillon de prédiction à l'aide d'un échantillon de référence ayant la même coordonnée x que celle de l'échantillon, un échantillon de référence ayant la même coordonnée y que celle de l'échantillon, un échantillon de référence voisin de l'extrémité gauche inférieure du bloc courant, et un échantillon de référence voisin de l'extrémité droite supérieure du bloc courant, parmi les échantillons de référence pour chaque échantillon dans le bloc courant, un poids w1 appliqué à l'échantillon de référence ayant la même coordonnée y que celle de l'échantillon et l'échantillon de référence voisin de l'extrémité droite supérieure du bloc courant et le poids w2 appliqué à l'échantillon de référence ayant la même coordonnée x que celle de l'échantillon et l'échantillon de référence voisin de l'extrémité gauche inférieure du bloc courant peuvent être réglés différemment les uns des autres.
(KO) 본 발명에서는 영상 부호화/복호화 방법 및 이를 위한 장치가 개시된다. 구체적으로, 복호화 장치가 영상을 복호화하는 방법에 있어서, 현재 블록의 인트라 예측 모드를 도출하는 단계, 상기 현재 블록의 상단에 이웃한 샘플들과 좌측에 이웃한 샘플들로 참조 샘플들을 구성하는 단계 및 상기 인트라 예측 모드가 수직/수평 강화 모드(vertical/horizontal strong mode)인 경우, 상기 현재 블록 내 각 샘플 별로 상기 참조 샘플들 중에서 상기 샘플과 x 좌표가 동일한 참조 샘플, 상기 샘플과 y 좌표가 동일한 참조 샘플, 상기 현재 블록의 좌하단에 이웃한 참조 샘플 및 상기 현재 블록의 우상단에 이웃한 참조 샘플을 이용하여 예측 샘플을 생성하는 단계를 포함하되, 상기 샘플과 y 좌표가 동일한 참조 샘플 및 상기 현재 블록의 우상단에 이웃한 참조 샘플에 적용되는 가중치(w1)와, 상기 샘플과 x 좌표가 동일한 참조 샘플 및 상기 현재 블록의 좌하단에 이웃한 참조 샘플에 적용되는 가중치(w2)이 서로 상이하게 설정될 수 있다.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Korean (KO)
Filing Language: Korean (KO)