TEST: add trace in image creation

Modules/Core/ImageBase/include/otbImage.h

@@ -252,7 +252,9 @@ public:
 
 protected:
   Image();
-  ~Image() ITK_OVERRIDE {}
+  ~Image() ITK_OVERRIDE {
+    std::cout<<"An image is deleted"<<std::endl;
+  }
 
 private:
   Image(const Self &) = delete;

Modules/Core/ImageBase/include/otbImage.txx

@@ -32,6 +32,7 @@ namespace otb
 template <class TPixel, unsigned int VImageDimension>
 Image<TPixel, VImageDimension>::Image()
 {
+  std::cout<<"An image is created"<<std::endl;
 }
 
 template <class TPixel, unsigned int VImageDimension>