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itkMinimumProjectionImageFilter.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkMinimumProjectionImageFilter.h,v $
00005   Language:  C++
00006   Date:      $Date: 2009-04-01 14:36:31 $
00007   Version:   $Revision: 1.3 $
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 
00018 #ifndef __itkMinimumProjectionImageFilter_h
00019 #define __itkMinimumProjectionImageFilter_h
00020 
00021 #include "itkProjectionImageFilter.h"
00022 #include "itkNumericTraits.h"
00023 #include "itkConceptChecking.h"
00024 
00025 namespace itk {
00046 namespace Function {
00047 template <class TInputPixel>
00048 class MinimumAccumulator
00049 {
00050 public:
00051   MinimumAccumulator( unsigned long ) {}
00052   ~MinimumAccumulator(){}
00053 
00054   inline void Initialize()
00055     {
00056     m_Minimum = NumericTraits< TInputPixel >::max();
00057     }
00058 
00059   inline void operator()( const TInputPixel &input ) 
00060     {
00061     m_Minimum = vnl_math_min( m_Minimum, input );
00062     }
00063 
00064   inline TInputPixel GetValue()
00065     {
00066     return m_Minimum;
00067     }
00068 
00069   TInputPixel m_Minimum;
00070 };
00071 } // end namespace Function
00072 
00073 
00074 template <class TInputImage, class TOutputImage>
00075 class ITK_EXPORT MinimumProjectionImageFilter : public
00076   ProjectionImageFilter<TInputImage, TOutputImage, 
00077     Function::MinimumAccumulator< typename TInputImage::PixelType > >
00078 {
00079 public:
00080   typedef MinimumProjectionImageFilter Self;
00081   typedef ProjectionImageFilter<TInputImage, TOutputImage, 
00082     Function::MinimumAccumulator< 
00083       typename TInputImage::PixelType > > Superclass;
00084 
00085   typedef TInputImage                        InputImageType;
00086   typedef typename InputImageType::PixelType InputPixelType; 
00087   
00088   typedef SmartPointer<Self>        Pointer;
00089   typedef SmartPointer<const Self>  ConstPointer;
00090 
00092   itkTypeMacro(MinimumProjectionImageFilter, ProjectionImageFilter);
00093 
00095   itkNewMacro(Self);
00096 
00097 #ifdef ITK_USE_CONCEPT_CHECKING
00098 
00099   itkConceptMacro(InputPixelTypeGreaterThanComparable,
00100     (Concept::LessThanComparable<InputPixelType>));
00101   itkConceptMacro(InputHasNumericTraitsCheck,
00102     (Concept::HasNumericTraits<InputPixelType>));
00103 
00105 #endif
00106 
00107 protected:
00108   MinimumProjectionImageFilter() {}
00109   virtual ~MinimumProjectionImageFilter() {}
00110 
00111 private:
00112   MinimumProjectionImageFilter(const Self&); //purposely not implemented
00113   void operator=(const Self&); //purposely not implemented
00114 
00115 }; // end MinimumProjectionImageFilter
00116 
00117 } //end namespace itk
00118 
00119 #endif
00120 

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