fixed inf/inf issue in checker_detector

Author: gursimarsingh

modules/mcc/src/bound_min.cpp

@@ -166,6 +166,9 @@ void CBoundMin::calculate()
     {
         j = (i + 1) % 4;
         Vcart = lines[i].cross(lines[j]);
+        if (fabs(Vcart.z) <= 1e-6){
+            continue;
+        }
         Vhom.x = Vcart.x / Vcart.z;
         Vhom.y = Vcart.y / Vcart.z;
         V[i] = Vhom + mu;