METHOD AND SYSTEM FOR ESTIMATING FUTURE MOTION OF IMAGE ELEMENTS FROM THE PAST MOTION IN A VIDEO CODER

摘要

A method of estimating the motion of an image element contained in the current image (Pc) of a video sequence preceded by a past reference image (Pp) and followed by a future reference image (Pf)- Following the calculation (A) of at least one past motion estimation vector (I) of a block of pixels (Bc) of the current image, referenced in the past reference image (Pp), a step (B) is executed for predicting the motion of the block of pixels (Bc) towards the future reference image (Pf) by linear combination of the past motion estimation vector (II) and of at least one past motion estimation vector (III) of a block of pixels (Bcf) of the future reference image (Pf) deduced from the block of pixels (Bc) by the linear combination, so as to generate a predicted motion estimation vector (IV).