Abstract: A new method based on discrete points is proposed to mo del 3-D objects. Balls, which center at these discrete points and have differen t radiuses, were used to cover the surfaces of the objects to render the object s with realism. Compared with the classic mesh-based method, our method has the advantages of low storage, low calculation cost and implementation facilitation .

Key words: discrete point modeling, point-field, surface part ition, polygonal mesh