itkComplexToPhaseImageFilter.h
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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 {
00049 return (TOutput)( vcl_atan2(A.imag(), A.real() ) );
00050 }
00051 };
00052 }
00053
00054 template <class TInputImage, class TOutputImage>
00055 class ITK_EXPORT ComplexToPhaseImageFilter :
00056 public
00057 UnaryFunctorImageFilter<TInputImage,TOutputImage,
00058 Function::ComplexToPhase<
00059 typename TInputImage::PixelType,
00060 typename TOutputImage::PixelType> >
00061 {
00062 public:
00064 typedef ComplexToPhaseImageFilter Self;
00065 typedef UnaryFunctorImageFilter<
00066 TInputImage,TOutputImage,
00067 Function::ComplexToPhase< 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(ComplexToPhaseImageFilter,
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
00093 protected:
00094 ComplexToPhaseImageFilter() {}
00095 virtual ~ComplexToPhaseImageFilter() {}
00096
00097 private:
00098 ComplexToPhaseImageFilter(const Self&);
00099 void operator=(const Self&);
00100
00101 };
00102
00103 }
00104
00105
00106 #endif
00107