METHOD AND DEVICE FOR ESTIMATING AND COMPENSATING MOVEMENT IN IMAGE SEQUENCE AND APPLICATION THEREOF IN HIGH-DEFINITION TELEVISION IMAGE TRANSMISSION SYSTEM

摘要

Motion estimation device in an image sequence comprising first, second and third image memories 10, 20, 30 placed in series to permanently ensure the respective storage of three successive images noted for example by their rank 2k, 2k + 1, 2k + 2 in the image sequence, and a recursive displacement estimator 40 receiving the output of said first and third image memories to update at each extension of the classification tree the motion vectors relative to the nodes of the shaft and send them to a delay decision circuit 50, said delay decision circuit receiving on the one hand said updating and on the other hand the outputs of said image memories and delivering, for each block preceding the block current of L blocks, the information of the group in which this previous block is finally classified and the information of the corresponding displacement vector. / P P Application: transmissio n high definition television images.