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1. (WO2017065357) FILTERING METHOD AND APPARATUS FOR IMPROVING PREDICTION IN IMAGE CODING SYSTEM
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2017/065357 International Application No.: PCT/KR2016/000788
Publication Date: 20.04.2017 International Filing Date: 25.01.2016
IPC:
H04N 19/105 (2014.01) ,H04N 19/503 (2014.01) ,H04N 19/117 (2014.01) ,H04N 19/82 (2014.01)
Applicants: LG ELECTRONICS INC.[KR/KR]; 128, Yeoui-daero,Yeongdeungpo-gu Seoul 07336, KR
Inventors: KIM, Kyuwoon; KR
LIM, Jaehyun; KR
PARK, Naeri; KR
SEO, Jungdong; KR
Agent: ENVISION PATENT& LAW FIRM; (2F. Samheung Yeoksam Bldg., Yeoksam-dong) 5 Teheran-ro 14-gil Gangnam-gu Seoul 06235, KR
Priority Data:
62/242,30816.10.2015US
62/242,30916.10.2015US
Title (EN) FILTERING METHOD AND APPARATUS FOR IMPROVING PREDICTION IN IMAGE CODING SYSTEM
(FR) PROCÉDÉ ET APPAREIL DE FILTRAGE POUR AMÉLIORER LA PRÉDICTION DANS UN SYSTÈME DE CODAGE D'IMAGE
(KO) 영상 코딩 시스템에서 예측 향상을 위한 필터링 방법 및 장치
Abstract: front page image
(EN) An inter prediction method according to the present invention, which is performed by a decoding apparatus, comprises the steps of: acquiring prediction-related information and residual information from a received bitstream; performing inter prediction on a current block on the basis of the prediction-related information so as to generate prediction samples; generating a list of Wiener filter candidates on the basis of spatially neighboring blocks of the current block, and deriving Wiener filter coefficients for the current block on the basis of candidate blocks in the list of the Wiener filter candidates; filtering the prediction samples on the basis of the derived Wiener filter coefficients; deriving residual samples for the current block on the basis of the residual information; and generating a reconstructed picture on the basis of the filtered prediction samples and the residual samples. The present invention can reduce the amount of data for a residual signal and improve coding efficiency.
(FR) L'invention concerne un procédé de prédiction inter-trame mis en œuvre par un appareil de décodage, lequel appareil comprend les étapes consistant : à acquérir des informations concernant une prédiction et des informations résiduelles à partir d'un train de bits reçu; à effectuer une prédiction inter-trame sur un bloc actuel sur la base des informations concernant une prédiction de manière à générer des échantillons de prédiction; à générer une liste de candidats de filtre de Wiener sur la base de blocs spatialement voisins du bloc actuel, et déduire les coefficients de filtre de Wiener pour le bloc actuel sur la base de blocs candidats dans la liste de candidats du filtre de Wiener; à filtrer les échantillons de prédiction sur la base du dérivé de coefficients de filtre de Wiener; à dériver des échantillons résiduels pour le bloc en cours sur la base des informations résiduelles; et à générer une image reconstruite sur la base des échantillons de prédiction filtrés et des échantillons résiduels. La présente invention peut réduire la quantité de données pour un signal résiduel et améliorer l'efficacité du codage.
(KO) 본 발명에 따른 디코딩 장치에 의하여 수행되는 인터 예측 방법은 수신된 비트스트림으로부터 예측 관련 정보 및 레지듀얼 정보를 획득하는 단계, 현재 블록에 대하여 상기 예측 관련 정보를 기반으로 인터 예측을 수행하여 예측 샘플들을 생성하는 단계, 상기 현재 블록의 공간적 주변 블록들을 기반으로 위너 필터 후보 리스트를 생성하고, 상기 위너 필터 후보 리스트 내의 후보 블록을 기반으로 상기 현재 블록에 대한 위너 필터 계수들을 도출하는 단계, 상기 도출된 위너 필터 계수들 기반으로 상기 예측 샘플들을 필터링하는 단계, 상기 레지듀얼 정보를 기반으로 상기 현재 블록에 대한 레지듀얼 샘플들을 도출하는 단계, 및 상기 필터링된 예측 샘플들과 상기 레지듀얼 샘플들을 기반으로 복원 픽처를 생성하는 단계를 포함함을 특징으로 한다. 본 발명에 따르면, 레지듀얼 신호를 위한 데이터량을 줄이고 코딩 효율을 향상시킬 수 있다.
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, 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, 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)