The emerging multimedia standards MPEG-4 and MPEG-7 adopt content-based coding and description method, the content-based functionality was proposed, which includes content-based video compression, scalability, interoperability and so on. In MPEG-4, a video sequence is segmented into several meaningful video objects(VOs). Coding is performed on shape, motion and texture. MPEG-7 aims at describing all kinds of multimedia objects and standardizing multimedia interface universally to enable efficient content-ba...