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itkTensorFractionalAnisotropyImageFilter.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkTensorFractionalAnisotropyImageFilter.h,v $
00005   Language:  C++
00006   Date:      $Date: 2008-10-18 16:11:14 $
00007   Version:   $Revision: 1.8 $
00008 
00009   Copyright (c) Insight Software Consortium. All rights reserved.
00010   See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
00011 
00012      This software is distributed WITHOUT ANY WARRANTY; without even 
00013      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
00014      PURPOSE.  See the above copyright notices for more information.
00015 
00016 =========================================================================*/
00017 #ifndef __itkTensorFractionalAnisotropyImageFilter_h
00018 #define __itkTensorFractionalAnisotropyImageFilter_h
00019 
00020 #include "itkUnaryFunctorImageFilter.h"
00021 
00022 namespace itk
00023 {
00024 
00025 // This functor class invokes the computation of fractional anisotropy from
00026 // every pixel.
00027 namespace Functor {  
00028  
00029 template< typename TInput >
00030 class TensorFractionalAnisotropyFunction
00031 {
00032 public:
00033   typedef typename TInput::RealValueType  RealValueType;
00034   TensorFractionalAnisotropyFunction() {}
00035   ~TensorFractionalAnisotropyFunction() {}
00036   bool operator!=( const TensorFractionalAnisotropyFunction & ) const
00037     {
00038     return false;
00039     }
00040   bool operator==( const TensorFractionalAnisotropyFunction & other ) const
00041     {
00042     return !(*this != other);
00043     }
00044   inline RealValueType operator()( const TInput & x )
00045     {
00046     return x.GetFractionalAnisotropy();
00047     }
00048 }; 
00049 
00050 }  // end namespace functor
00051 
00052 
00067 template <typename  TInputImage, typename  TOutputImage=TInputImage>
00068 class ITK_EXPORT TensorFractionalAnisotropyImageFilter :
00069     public
00070 UnaryFunctorImageFilter<TInputImage,TOutputImage, 
00071                         Functor::TensorFractionalAnisotropyFunction< 
00072                                         typename TInputImage::PixelType> > 
00073 {
00074 public:
00076   typedef TensorFractionalAnisotropyImageFilter  Self;
00077   typedef UnaryFunctorImageFilter<
00078     TInputImage,TOutputImage, 
00079     Functor::TensorFractionalAnisotropyFunction< 
00080       typename TInputImage::PixelType> >         Superclass;
00081   typedef SmartPointer<Self>                     Pointer;
00082   typedef SmartPointer<const Self>               ConstPointer;
00083 
00084   typedef typename Superclass::OutputImageType    OutputImageType;
00085   typedef typename TOutputImage::PixelType        OutputPixelType;
00086   typedef typename TInputImage::PixelType         InputPixelType;
00087   typedef typename InputPixelType::ValueType      InputValueType;
00088 
00090   itkTypeMacro( TensorFractionalAnisotropyImageFilter, UnaryFunctorImageFilter );
00091 
00093   itkNewMacro(Self);
00094 
00096   void PrintSelf(std::ostream& os, Indent indent) const
00097     { this->Superclass::PrintSelf( os, indent ); }
00098 
00099 #ifdef ITK_USE_CONCEPT_CHECKING
00100 
00101   itkConceptMacro(InputHasNumericTraitsCheck,
00102                   (Concept::HasNumericTraits<InputValueType>));
00103 
00105 #endif
00106 
00107 protected:
00108   TensorFractionalAnisotropyImageFilter() {};
00109   virtual ~TensorFractionalAnisotropyImageFilter() {};
00110 
00111 private:
00112   TensorFractionalAnisotropyImageFilter(const Self&); //purposely not implemented
00113   void operator=(const Self&); //purposely not implemented
00114 
00115 };
00116 
00117 
00118   
00119 } // end namespace itk
00120   
00121 #endif
00122 

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