Zhiwen Xu Xiaoxin Guo Xiaoying Hu Xu Chen Zhengxuan Wang Recognition for Ocular Fundus Based on Shape of Blood Vessel. 131-139 2005 conf/grec/2005 GREC http://dx.doi.org/10.1007/11767978_12 db/conf/grec/grec2005.html#XuGHCW05