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1. (WO2018066986) IMAGE DATA ENCODING/DECODING METHOD AND APPARATUS
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.:    WO/2018/066986    International Application No.:    PCT/KR2017/011147
Publication Date: 12.04.2018 International Filing Date: 10.10.2017
IPC:
H04N 19/625 (2014.01), H04N 19/103 (2014.01), H04N 19/176 (2014.01), H04N 19/124 (2014.01), H04N 19/13 (2014.01), H04N 19/129 (2014.01), H04N 19/117 (2014.01), H04N 19/119 (2014.01), H04N 19/11 (2014.01), H04N 19/86 (2014.01)
Applicants: KIM, Ki Baek [KR/KR]; (KR)
Inventors: KIM, Ki Baek; (KR)
Agent: E-SANG PATENT & TRADEMARK LAW FIRM; 3F., 188, Baumoe-ro, Seocho-gu, Seoul 06747 (KR)
Priority Data:
10-2016-0129413 06.10.2016 KR
10-2017-0090625 17.07.2017 KR
Title (EN) IMAGE DATA ENCODING/DECODING METHOD AND APPARATUS
(FR) PROCÉDÉ ET APPAREIL DE CODAGE ET DE DÉCODAGE DE DONNÉES D'IMAGES
(KO) 영상 데이터 부호화/복호화 방법 및 장치
Abstract: front page image
(EN)A method for decoding a 360-degree image comprises the steps of: receiving a bitstream obtained by encoding a 360-degree image; generating a prediction image by making reference to syntax information obtained from the received bitstream; combining the generated prediction image with a residual image obtained by dequantizing and inverse-transforming the bitstream, so as to obtain a decoded image; and reconstructing the decoded image into a 360-degree image according to a projection format. Here, the step of generating the prediction image comprises the steps of: configuring a reference pixel by using a boundary pixel which has a different color space than a current block to be decoded and is adjacent to the current block, according to a prediction mode obtained from the syntax information; and performing intra prediction by using the reference pixel, so as to generate a prediction block for the current block.
(FR)L'invention concerne un procédé pour décoder une image à 360 degrés comprend les étapes consistant à : recevoir un train de bits obtenu par codage d'une image à 360 degrés ; combiner l'image de prédiction générée avec une image résiduelle obtenue par déquantification et transformation inverse du train de bits, de manière à obtenir une image décodée ; et reconstruire l'image décodée en une image à 360 degrés selon un format de projection. Ici, l'étape de génération de l'image de prédiction comprend les étapes consistant à : configurer un pixel de référence à l'aide d'un pixel limite qui a un espace de couleur différent d'un bloc courant à décoder et qui est adjacent au bloc courant, selon un mode de prédiction obtenu à partir des informations de syntaxe ; et effectuer une prédiction intra à l'aide du pixel de référence, de façon à générer un bloc de prédiction pour le bloc courant.
(KO)360도 영상의 복호화 방법은, 360도 영상이 부호화된 비트스트림을 수신하는 단계, 수신된 비트스트림에서 획득한 구문 정보를 참조하여, 예측 영상을 생성하는 단계, 상기 생성된 예측 영상을 상기 비트스트림을 역양자화 및 역변환하여 획득한 잔차 영상과 결합하여 복호화된 영상을 획득하는 단계 및 상기 복호화된 영상을 투영 포맷에 따른 360도 영상으로 재구성하는 단계를 포함한다. 여기서 상기 예측 영상을 생성하는 단계는, 상기 구문 정보에서 획득한 예측 모드에 따라 복호화할 현재 블록과 컬러 공간이 상이하고 상기 현재 블록과 인접한 경계 화소를 이용하여 참조 화소를 구성하는 단계 및 상기 참조 화소를 이용하여 화면 내 예측을 수행함으로써 상기 현재 블록에 대한 예측 블록을 생성하는 단계를 포함한다.
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, JO, JP, KE, KG, KH, 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 (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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)