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itkRGBToLuminanceImageAdaptor.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkRGBToLuminanceImageAdaptor.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 __itkRGBToLuminanceImageAdaptor_h
00018 #define __itkRGBToLuminanceImageAdaptor_h
00019 
00020 #include <itkImageAdaptor.h>
00021 #include "vnl/vnl_math.h"
00022 
00023 namespace itk
00024 {
00025  
00026 namespace Accessor {
00038 template <class TInternalType, class TExternalType >
00039 class ITK_EXPORT RGBToLuminancePixelAccessor  
00040 {
00041 public:
00044   typedef TExternalType ExternalType;
00045 
00048   typedef TInternalType InternalType;
00049 
00050   static inline void Set(TInternalType & output, const TExternalType & input) 
00051     {output = static_cast<TInternalType>( input.GetLuminance() );}
00052 
00053   static inline TExternalType Get( const TInternalType & input ) 
00054     {return static_cast<TExternalType>( input.GetLuminance() );}
00055 };
00056   
00057 } // end namespace Accessor
00058  
00068 template <class TImage, class TOutputPixelType>
00069 class ITK_EXPORT RGBToLuminanceImageAdaptor : public
00070       ImageAdaptor<TImage,
00071                    Accessor::RGBToLuminancePixelAccessor<
00072                                       typename TImage::PixelType,
00073                                       TOutputPixelType>   >
00074 {
00075 public:
00077   typedef RGBToLuminanceImageAdaptor  Self;
00078   typedef ImageAdaptor<TImage, Accessor::RGBToLuminancePixelAccessor<
00079                                typename TImage::PixelType,
00080                                TOutputPixelType> >  Superclass;
00081   typedef SmartPointer<Self>  Pointer;
00082   typedef SmartPointer<const Self>  ConstPointer;
00083 
00085   itkNewMacro(Self);  
00086 
00088   itkTypeMacro( RGBToLuminanceImageAdaptor, ImageAdaptor );
00089 
00090  protected:
00091   RGBToLuminanceImageAdaptor() {}
00092   virtual ~RGBToLuminanceImageAdaptor() {}
00093   
00094  private:
00095   RGBToLuminanceImageAdaptor(const Self&); //purposely not implemented
00096   void operator=(const Self&); //purposely not implemented
00097 
00098 };
00099 
00100 } // end namespace itk
00101 
00102 #endif
00103 

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