IMAGE ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM IN WHICH BITSTREAM IS STORED

An image decoding method is disclosed in the present specification. The image decoding method of the present invention comprises the steps of: determining whether a current block is a bi-directional optical flow mode; calculating tilt information about prediction samples of the current block if the...

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Bibliographic Details
Main Authors LEE, Ha Hyun, KIM, Hui Yong, LIM, Sung Chang, KANG, Jung Won, LEE, Jin Ho
Format Patent
LanguageEnglish
French
Korean
Published 25.06.2020
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Summary:An image decoding method is disclosed in the present specification. The image decoding method of the present invention comprises the steps of: determining whether a current block is a bi-directional optical flow mode; calculating tilt information about prediction samples of the current block if the current block is a bi-directional optical flow mode; and generating a prediction block of the current block by using the calculated tilt information, wherein the step of calculating tilt information about prediction samples of the current block calculates tilt information by using at least one neighbor sample adjacent to the prediction sample. La présente invention concerne un procédé de décodage d'image. Le procédé de décodage d'image de la présente invention comprend les étapes consistant à : déterminer si un bloc actuel est un mode de flux optique bidirectionnel ; calculer des informations d'inclinaison concernant des échantillons de prédiction du bloc actuel si le bloc actuel est un mode de flux optique bidirectionnel ; et générer un bloc de prédiction du bloc actuel à l'aide des informations d'inclinaison calculées, l'étape de calcul d'informations d'inclinaison, relatives aux échantillons de prédiction du bloc actuel, calculant des informations d'inclinaison à l'aide d'au moins un échantillon voisin adjacent à l'échantillon de prédiction. 본 명세서에서는 영상 복호화 방법이 개시된다. 본 발명의 영상 복호화 방법은, 현재 블록이 양방향 광흐름 모드인지 판단하는 단계, 상기 현재 블록이 양방향 광흐름 모드인 경우, 상기 현재 블록의 예측 샘플들의 기울기 정보를 계산하는 단계 및 상기 계산된 기울기 정보를 이용하여 상기 현재 블록의 예측 블록을 생성하는 단계를 포함하고, 상기 현재 블록의 예측 샘플들의 기울기 정보를 계산하는 단계는, 상기 예측 샘플에 인접한 적어도 하나의 이웃 샘플을 이용하여 기울기 정보를 계산하는 것을 특징으로 할 수 있다.
Bibliography:Application Number: WO2019KR18204