1996 Volume 20 Issue 64 Pages 31-38
This paper proposes a new motion compensation method. First, the current frame is partitioned into varibable-size blocks in the three steps according to the local energy of warping prediction errors. In order to overcome unnatural distortion due to warping prediction, block matching is then selectively applied to the small blocks where discontinuous motion is detected. Finally the method transfigures these blocks into variable-shape blocks so that their boundaries can run parallel to those of moving objects. Simulation results indicate that the method provides more than 2 dB additional improvement in SNR of predicted images over the conventional block matching and produces natural images with less interference.
