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itkComplexToImaginaryImageFilter.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkComplexToImaginaryImageFilter.h,v $
00005   Language:  C++
00006   Date:      $Date: 2008-10-13 18:54:27 $
00007   Version:   $Revision: 1.7 $
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 __itkComplexToImaginaryImageFilter_h
00018 #define __itkComplexToImaginaryImageFilter_h
00019 
00020 #include "itkUnaryFunctorImageFilter.h"
00021 #include "vnl/vnl_math.h"
00022 
00023 namespace itk
00024 {
00025   
00031 namespace Function {  
00032   
00033 template< class TInput, class TOutput>
00034 class ComplexToImaginary
00035 {
00036 public:
00037   ComplexToImaginary() {}
00038   ~ComplexToImaginary() {}
00039   bool operator!=( const ComplexToImaginary & ) const
00040     {
00041     return false;
00042     }
00043   bool operator==( const ComplexToImaginary & other ) const
00044     {
00045     return !(*this != other);
00046     }
00047   inline TOutput operator()( const TInput & A )
00048     {
00049     return (TOutput)( A.imag() );
00050     }
00051 }; 
00052 }
00053 
00054 template <class TInputImage, class TOutputImage>
00055 class ITK_EXPORT ComplexToImaginaryImageFilter :
00056     public
00057 UnaryFunctorImageFilter<TInputImage,TOutputImage, 
00058                         Function::ComplexToImaginary< 
00059   typename TInputImage::PixelType, 
00060   typename TOutputImage::PixelType>   >
00061 {
00062 public:
00064   typedef ComplexToImaginaryImageFilter  Self;
00065   typedef UnaryFunctorImageFilter<
00066     TInputImage,TOutputImage, 
00067     Function::ComplexToImaginary< typename TInputImage::PixelType, 
00068                                   typename TOutputImage::PixelType> >
00069                                          Superclass;
00070   typedef SmartPointer<Self>             Pointer;
00071   typedef SmartPointer<const Self>       ConstPointer;
00072 
00074   itkNewMacro(Self);
00075 
00077   itkTypeMacro(ComplexToImaginaryImageFilter, 
00078                UnaryFunctorImageFilter);
00079 
00080   typedef typename TInputImage::PixelType                     InputPixelType;
00081   typedef typename TOutputImage::PixelType                    OutputPixelType;
00082   typedef typename NumericTraits< InputPixelType >::ValueType InputPixelValueType;
00083 
00084 #ifdef ITK_USE_CONCEPT_CHECKING
00085 
00086   itkConceptMacro(InputConvertibleToOutputCheck,
00087     (Concept::Convertible<InputPixelValueType, OutputPixelType>));
00088 
00090 #endif
00091 
00092 protected:
00093   ComplexToImaginaryImageFilter() {}
00094   virtual ~ComplexToImaginaryImageFilter() {}
00095 
00096 private:
00097   ComplexToImaginaryImageFilter(const Self&); //purposely not implemented
00098   void operator=(const Self&); //purposely not implemented
00099 
00100 };
00101 
00102 } // end namespace itk
00103 
00104 
00105 #endif
00106 

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