Abstract: Point-based graphics a hot research topic in computer graphics in recent years.Since the point-based models are usually very large,it is important to develop effective compression techniques for storing and transmitting them on the network.In this paper,we overview the basic compression framework for point-based models,and present some classification criteria for the compression methods.Then,for the two main categories,single-rate method and progressive method,we revisit and compare mostly recently developed point-based compression schemes.After analyzing and evaluating the key techniques in these schemes,we discuss some possible directions for future work in this area.