+const char Scanner::GEOMETRY_PARALLEL_STR[] = "parallel";
+const char Scanner::GEOMETRY_EQUILINEAR_STR[] = "equilinear";
+const char Scanner::GEOMETRY_EQUIANGULAR_STR[] = "equiangular";
+
+const char Scanner::GEOMETRY_PARALLEL_TITLE_STR[] = "Parallel";
+const char Scanner::GEOMETRY_EQUILINEAR_TITLE_STR[] = "Equilinear";
+const char Scanner::GEOMETRY_EQUIANGULAR_TITLE_STR[] = "Equiangular";