Extraction of Prostatic Lumina and Automated Recognition for Prostatic Calculus Image Using PCA-SVM. - Zhuocai Wang; Xiangmin Xu; Xiaojun Ding; Hui Xiao; Yusheng Huang; Jian Liu; Xiaofen Xing; Hua Wang; D. Joshua Liao (Comput. Math. Methods Medicine, 2011)