1[1]RUZON M,TOMASI C.Alpha estimation in natural images[C]//Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition,San Diego:[s.n.].vol.1,pp.18-25,June 2000.
2[2]SMITH A R,BLINN J F.Blue screen matting[C]//Conference on Computer Graphics:Proceedings of the ACM SIGGRAPH.New York:ACM Press,1996:259-268.
