Predictive block-matching motion estimation schemes for video compression. II. Inter-frame prediction of motion vectors

For pt. I see ibid., vol.2, p.1088 (1991). A novel predictive block matching motion estimation scheme is proposed for efficient video codec design. The proposed scheme is based on the `inertia´ effect of natural video scenes and takes advantage of the motion vectors obtained in the previous frames. Not only are motion searching time and overhead significantly reduced, but the proposed scheme also provides a realistic motion tendency, which is very useful for frame-skipping/interpolation techniques. These advantages are demonstrated by experimental results obtained on the Abekas video system