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itkComplexToModulusImageFilter.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkComplexToModulusImageFilter.h,v $
00005   Language:  C++
00006   Date:      $Date: 2007-09-27 11:36:40 $
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 __itkComplexToModulusImageFilter_h
00018 #define __itkComplexToModulusImageFilter_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 ComplexToModulus
00035 {
00036 public:
00037   ComplexToModulus() {}
00038   ~ComplexToModulus() {}
00039   bool operator!=( const ComplexToModulus & ) const
00040   {
00041     return false;
00042   }
00043   bool operator==( const ComplexToModulus & other ) const
00044   {
00045     return !(*this != other);
00046   }
00047   inline TOutput operator()( const TInput & A )
00048   { return (TOutput)( vcl_sqrt(A.real() * A.real() + 
00049                             A.imag() * A.imag() ) ); }
00050 }; 
00051 }
00052 
00053 template <class TInputImage, class TOutputImage>
00054 class ITK_EXPORT ComplexToModulusImageFilter :
00055     public
00056 UnaryFunctorImageFilter<TInputImage,TOutputImage, 
00057                         Function::ComplexToModulus< 
00058   typename TInputImage::PixelType, 
00059   typename TOutputImage::PixelType>   >
00060 {
00061 public:
00063   typedef ComplexToModulusImageFilter  Self;
00064   typedef UnaryFunctorImageFilter<TInputImage,TOutputImage, 
00065                                   Function::ComplexToModulus< typename TInputImage::PixelType, 
00066                                                  typename TOutputImage::PixelType> >  Superclass;
00067   typedef SmartPointer<Self>   Pointer;
00068   typedef SmartPointer<const Self>  ConstPointer;
00069 
00071   itkNewMacro(Self);
00072 
00074   itkTypeMacro(ComplexToModulusImageFilter, 
00075                UnaryFunctorImageFilter);
00076 
00077   typedef typename TInputImage::PixelType   InputPixelType;
00078   typedef typename TOutputImage::PixelType  OutputPixelType;
00079   typedef typename NumericTraits< InputPixelType >::ValueType InputPixelValueType;
00080 
00081 
00082 #ifdef ITK_USE_CONCEPT_CHECKING
00083 
00084   itkConceptMacro(InputMultiplyOperatorCheck,
00085     (Concept::MultiplyOperator<InputPixelValueType>));
00086 
00088 #endif
00089 
00090 protected:
00091   ComplexToModulusImageFilter() {}
00092   virtual ~ComplexToModulusImageFilter() {}
00093 
00094 private:
00095   ComplexToModulusImageFilter(const Self&); //purposely not implemented
00096   void operator=(const Self&); //purposely not implemented
00097 
00098 };
00099 
00100 } // end namespace itk
00101 
00102 
00103 #endif
00104 

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