+ std::string num = clitk::toString(i);
+ if (i<10) num = "0"+num;
+ if (i<100) num = "0"+num;
+ if (i<1000) num = "0"+num;
+
+ fn = itksys::SystemTools::GetFilenamePath(filename.toStdString()) + "/"+ fn
+ + "_" + num + itksys::SystemTools::GetFilenameLastExtension(filename.toStdString());