Song Xuehua Ding Yan Gen Jianfeng Chen Yu Shadow Removal of Vehicles in a Video System Based on RGB Chroma Model. 977-980 2008 CSSE (1) http://dx.doi.org/10.1109/CSSE.2008.1160 conf/csse/2008-1 db/conf/csse/csse2008-1.html#XuehuaYJY08