+ double mForegroundValue;
+ bool m_modeBG;
+ vtkSmartPointer<vtkLookupTable> mColorLUT;
+ double mDepth;
+
+ std::vector<vtkSmartPointer<vtkImageMapToRGBA> > mMapperList;
+ std::vector<vtkSmartPointer<vtkImageActor> > mImageActorList;
+ vtkSmartPointer<vtkImageReslice> mFusionReslice;
+ vtkSmartPointer<vtkTransform> mConcatenatedFusionTransform;