METHOD AND DEVICE FOR IMAGE CODING USING MOTION VECTOR DIFFERENCES

• Main Authors: JANG HYEONGMOON, PARK NAERI, NAM JUNGHAK
• Format: Patent
• Language: English; Korean
• Published: 01.07.2024
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

본 문서에 따른 실시예들에 따르면, 영상/비디오 코딩을 위해 예측 절차가 수행될 수 있고, 예측 절차는 인터 예측에 따른 MMVD(merge mode motion vector differences), SMVD(symmetric motion vector differences)를 포함할 수 있다. 인터 예측은 현재 픽처의 참조 픽처들을 기반으로 수행될 수 있고, 참조 픽처들의 타입들(ex. 롱텀 참조 픽처, 숏텀 참조 픽처 etc.)은 인터 예측을 위해 고려될 수 있다. 따라서, 예측 절차에서의 성능 및 코딩 효율이 높아질 수 있다. According to embodiments of the present document, a prediction procedure may be performed for image/video coding, and the prediction procedure may include symmetric motion vector differences (SMVDs) and merge mode motion vector differences (MMVDs) according to an inter prediction. The inter prediction may be performed on the basis of reference pictures of a current picture, and types (e.g., a long term reference picture, a short term reference picture, etc.) of the reference pictures may be considered for the inter prediction. Therefore, performance and coding efficiency in the prediction procedure can be improved.