Yung-Yu Chuang Aseem Agarwala Brian Curless David Salesin Richard Szeliski Video matting of complex scenes. 243-248 2002 conf/siggraph/2002 SIGGRAPH http://doi.acm.org/10.1145/566570.566572 db/conf/siggraph/siggraph2002.html#ChuangACSS02