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itkComplexToPhaseImageFilter.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkComplexToPhaseImageFilter.h,v $
00005   Language:  C++
00006   Date:      $Date: 2007/09/27 11:36:40 $
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 __itkComplexToPhaseImageFilter_h
00018 #define __itkComplexToPhaseImageFilter_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 ComplexToPhase
00035 {
00036 public:
00037   ComplexToPhase() {}
00038   ~ComplexToPhase() {}
00039   bool operator!=( const ComplexToPhase & ) const
00040   {
00041     return false;
00042   }
00043   bool operator==( const ComplexToPhase & other ) const
00044   {
00045     return !(*this != other);
00046   }
00047   inline TOutput operator()( const TInput & A )
00048   { return (TOutput)( vcl_atan2(A.imag(), A.real() ) );}
00049 }; 
00050 }
00051 
00052 template <class TInputImage, class TOutputImage>
00053 class ITK_EXPORT ComplexToPhaseImageFilter :
00054     public
00055 UnaryFunctorImageFilter<TInputImage,TOutputImage, 
00056                         Function::ComplexToPhase< 
00057   typename TInputImage::PixelType, 
00058   typename TOutputImage::PixelType>   >
00059 {
00060 public:
00062   typedef ComplexToPhaseImageFilter  Self;
00063   typedef UnaryFunctorImageFilter<TInputImage,TOutputImage, 
00064                                   Function::ComplexToPhase< typename TInputImage::PixelType, 
00065                                                  typename TOutputImage::PixelType> >  Superclass;
00066   typedef SmartPointer<Self>   Pointer;
00067   typedef SmartPointer<const Self>  ConstPointer;
00068 
00070   itkNewMacro(Self);
00071 
00073   itkTypeMacro(ComplexToPhaseImageFilter, 
00074                UnaryFunctorImageFilter);
00075 
00076   typedef typename TInputImage::PixelType   InputPixelType;
00077   typedef typename TOutputImage::PixelType  OutputPixelType;
00078   typedef typename NumericTraits< InputPixelType >::ValueType InputPixelValueType;
00079 
00080 #ifdef ITK_USE_CONCEPT_CHECKING
00081 
00082   itkConceptMacro(InputConvertibleToOutputCheck,
00083     (Concept::Convertible<InputPixelValueType, OutputPixelType>));
00084 
00086 #endif
00087 
00088 
00089 protected:
00090   ComplexToPhaseImageFilter() {}
00091   virtual ~ComplexToPhaseImageFilter() {}
00092 
00093 private:
00094   ComplexToPhaseImageFilter(const Self&); //purposely not implemented
00095   void operator=(const Self&); //purposely not implemented
00096 
00097 };
00098 
00099 } // end namespace itk
00100 
00101 
00102 #endif
00103 

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