Method and circuit for estimating motion between pictures composed of interlaced fields, and device for coding digital signals comprising such a circuit

摘要

The method involves using a channel (10a) to find the movement vector which best represents the movement between two frames. The channel consists of two non-autonomous branches which are placed at the outputs of the substages of the frame vector searching channel (20). The vector frame is found by block correlation and a refining operation is performed to find the middle of the image. This allows determination of an approximation of the movement vector which can be used accurately in the estimate.