H.263 Video Coding Based on Global Motion Compensation
Global motion compensation coding is a novel coding method based on models. Its coding efficiency is higher than that of conventional coding method with motion compensation, and so is the coded images' quality. The foundation of global motion compensation is global motion estimation. In this paper, Global motion estimation and its application in H.263 coding are studied and its improved method is proposed. Comparative experiments utilize some standard sequences with global motion are performed. From the experimental results, conclusion can be made that the H.263 codings efficiency which based on global motion compensation is improved and the new global motion estimation algorithm is superior in computation and accuracy.