IMAGE ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM STORING BITSTREAM

Disclosed in the present specification is an image decoding/encoding method. An image decoding method according to the present invention includes the steps of: generating a first prediction block for the current block; generating a second prediction block for the current block; and using a per-sampl...

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Bibliographic Details
Main Authors LEE, Ha Hyun, YOON, Yong Uk, DO, Ji Hoon, LIM, Sung Chang, KIM, Jae Gon, PARK, Do Hyeon, KANG, Jung Won, LEE, Jin Ho
Format Patent
LanguageEnglish
French
Korean
Published 25.03.2021
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Summary:Disclosed in the present specification is an image decoding/encoding method. An image decoding method according to the present invention includes the steps of: generating a first prediction block for the current block; generating a second prediction block for the current block; and using a per-sample weighted sum for the first prediction block and the second prediction block to generate a final prediction sample for the current block, wherein the weight used for the per-sample weighted sum may be determined on the basis of the position of a current brightness sample and a geometric prediction mode (GPM) boundary line dividing the current block. Un procédé de décodage/codage d'image est divulgué dans la présente spécification. Un procédé de décodage d'image selon la présente invention comprend les étapes suivantes de : génération d'un premier bloc de prédiction pour le bloc courant; génération d'un second bloc de prédiction pour le bloc courant; et utilisation d'une somme pondérée par échantillon pour le premier bloc de prédiction et le second bloc de prédiction afin de générer un échantillon de prédiction final pour le bloc courant, le poids utilisé pour la somme pondérée par échantillon pouvant être déterminé sur la base de la position d'un échantillon de luminosité courant et d'une ligne de limite de mode de prédiction géométrique (GPM) divisant le bloc courant. 본 명세서에서는 영상 복호화/부호화 방법이 개시된다. 본 발명에 따른 영상 복호화 방법은 현재 블록에 대한 제 1 예측 블록을 생성하는 단계, 상기 현재 블록에 대한 제 2 예측 블록을 생성하는 단계 및 상기 제 1 예측 블록 및 상기 제 2 예측 블록에 대한 샘플 단위 가중합을 이용하여 상기 현재 블록에 대한 최종 예측 샘플을 생성하는 단계를 포함하되, 상기 샘플 단위 가중합에 사용되는 가중치는, 현재 휘도 샘플의 위치 및 상기 현재 블록을 분할하는 GPM(Geometric Prediction Mode) 경계선을 기반으로 결정될 수 있다.
Bibliography:Application Number: WO2020KR12717