fix unit tests and silence warnings when compiling with clang

now all unit tests pass

modules/img/alg/src/threshold.cc

@@ -21,11 +21,9 @@
 
 
 
-namespace ost { namespace img {
-
-
+namespace ost { namespace img { namespace image_state {
 
 template class TEMPLATE_DEF_EXPORT ImageStateModIPAlgorithm<alg::ThresholdFnc>;
 
-}}
+}}}
 

modules/img/base/src/image_state/image_state_visitor.hh

@@ -315,7 +315,7 @@ public:
 private:
   template <typename T, class D>
   void T_Visit_(const ImageStateImpl<T,D>& isi) {
-    VisitState(isi);
+    this->VisitState(isi);
   }
 };
 
@@ -368,7 +368,7 @@ public:
 private:
   template <typename T, class D>
   void T_Visit_(ImageStateImpl<T,D>& isi) {
-    VisitState(isi);
+    this->VisitState(isi);
   }
 };
 
@@ -423,7 +423,7 @@ public:
 private:
   template <typename T, class D>
   void T_Visit_(ImageStateImpl<T,D>& isi) const {
-    VisitState(isi);
+    this->VisitState(isi);
   }
 };
 
@@ -476,7 +476,7 @@ public:
 private:
   template <typename T, class D>
   ImageStateBasePtr T_Visit_(const ImageStateImpl<T,D>& isi) {
-    return VisitState(isi);
+    return this->VisitState(isi);
   }
 };
 
@@ -531,7 +531,7 @@ public:
 private:
   template <typename T, class D>
   ImageStateBasePtr T_Visit_(const ImageStateImpl<T,D>& isi) const {
-    return VisitState(isi);
+    return this->VisitState(isi);
   }
 };
 
@@ -584,7 +584,7 @@ public:
 private:
   template <typename T, class D>
   ImageStateBasePtr T_Visit_(ImageStateImpl<T,D>& isi) {
-    return VisitState(isi);
+    return this->VisitState(isi);
   }
 };