Video encoding method and apparatus and video decoding...

H - Electricity – 04 – N

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H04N 7/36 (2006.01) G06T 9/00 (2006.01) H04N 7/46 (2006.01) H04N 7/50 (2006.01)

Patent

CA 2440380

A moving picture coding is performed by adaptively switching between use of a plurality of decoded moving picture signals as reference frames to create a prediction macro block image from one of the plurality of reference frames for each macro block, isolation of a reference macro block from a plurality of reference frames to obtain an average value as a prediction macro block image, and isolation of a reference macro block from a plurality of reference frames to create a prediction macro block image by linear extrapolation or linear interpolation according to a frame-to-frame distance between the reference frame and the coding frame.

Selon cette invention, on effectue un codage d'images en mouvement en basculant, de façon adaptative, entre l'utilisation d'une pluralité de signaux d'images en mouvement décodés comme cadres de référence pour créer un macrobloc de prédiction à partir d'un des cadres de référence pour chaque macrobloc, l'isolation d'un macrobloc de référence parmi plusieurs cadres de référence pour obtenir une valeur moyenne comme macrobloc de prédiction et l'isolation d'un macrobloc de référence parmi plusieurs cadres de référence pour créer un macrobloc de prédiction par extrapolation linéaire ou interpolation linéaire en fonction d'une distance entre le cadre de référence et le cadre de codage

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