26-4 A Study on Motion Compensation for Arbitrarily-Shaped VOP Using Warping Prediction Based on Variable-Blockd

Abstract

We previously proposed a motion compensation method which utilized the same motion vectors for both texture and shape information of arbitrarly-shaped VOP. In this paper, we optimize motion vectors and block sized iteratively to improve the eggiciency of warping prediction. Simulation results indicate that the proposed method is superior to the conventional method in terms of SNR of predicted images at the same bit rate.