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itkRGBToLuminanceImageFilter.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkRGBToLuminanceImageFilter.h,v $
00005   Language:  C++
00006   Date:      $Date: 2004/05/10 00:16:11 $
00007   Version:   $Revision: 1.1 $
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 __itkRGBToLuminanceImageFilter_h
00018 #define __itkRGBToLuminanceImageFilter_h
00019 
00020 #include "itkUnaryFunctorImageFilter.h"
00021 
00022 namespace itk
00023 {
00024   
00035 namespace Function {  
00036   
00037 template< class TInput, class TOutput>
00038 class RGBToLuminance
00039 {
00040 public:
00041   typedef typename TInput::ComponentType      ComponentType;
00042   typedef typename itk::NumericTraits< ComponentType >::RealType  RealType;
00043 
00044   RGBToLuminance() {}
00045   ~RGBToLuminance() {}
00046   inline TOutput operator()( const TInput & A )
00047   { return static_cast<TOutput>( A.GetLuminance() ); }
00048 }; 
00049 }
00050 
00051 template <class TInputImage, class TOutputImage>
00052 class ITK_EXPORT RGBToLuminanceImageFilter :
00053     public
00054 UnaryFunctorImageFilter<TInputImage,TOutputImage, 
00055                         Function::RGBToLuminance< 
00056   typename TInputImage::PixelType, 
00057   typename TOutputImage::PixelType>   >
00058 {
00059 public:
00061   typedef RGBToLuminanceImageFilter  Self;
00062   typedef UnaryFunctorImageFilter<TInputImage,TOutputImage, 
00063                                   Function::RGBToLuminance< typename TInputImage::PixelType, 
00064                                                  typename TOutputImage::PixelType> >  Superclass;
00065   typedef SmartPointer<Self>   Pointer;
00066   typedef SmartPointer<const Self>  ConstPointer;
00067 
00069   itkNewMacro(Self);
00070   
00071 protected:
00072   RGBToLuminanceImageFilter() {}
00073   virtual ~RGBToLuminanceImageFilter() {}
00074 
00075 private:
00076   RGBToLuminanceImageFilter(const Self&); //purposely not implemented
00077   void operator=(const Self&); //purposely not implemented
00078 
00079 };
00080 
00081 } // end namespace itk
00082 
00083 
00084 #endif

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