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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkRGBToLuminanceImageAdaptor.h.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:47 $ |
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Version: $Revision: 1.4 $ |
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Copyright (c) Insight Software Consortium. All rights reserved. |
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See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details. |
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This software is distributed WITHOUT ANY WARRANTY; without even |
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
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PURPOSE. See the above copyright notices for more information. |
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=========================================================================*/ |
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#ifndef __itkRGBToLuminanceImageAdaptor_h |
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#define __itkRGBToLuminanceImageAdaptor_h |
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#include <itkImageAdaptor.h> |
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#include "vnl/vnl_math.h" |
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namespace itk |
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{ |
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namespace Accessor { |
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/** \class RGBToLuminancePixelAccessor |
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* \brief Give access to Luminance of a color pixel type. |
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* |
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* RGBToLuminancePixelAccessor is templated over an internal type and an |
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* external type representation. This class cast the input applies the funtion |
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* to it and cast the result according to the types defined as template |
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* parameters. The input pixel type must support the GetLuminance() method. |
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* This is the case of the RGBPixel class for example. |
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* |
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* \ingroup ImageAdaptors |
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*/ |
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template <class TInternalType, class TExternalType > |
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class ITK_EXPORT RGBToLuminancePixelAccessor |
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{ |
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public: |
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/** External typedef. It defines the external aspect |
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* that this class will exhibit. */ |
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typedef TExternalType ExternalType; |
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/** Internal typedef. It defines the internal real |
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* representation of data. */ |
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typedef TInternalType InternalType; |
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static inline void Set(TInternalType & output, const TExternalType & input) |
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{output = static_cast<TInternalType>( input.GetLuminance() );} |
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static inline TExternalType Get( const TInternalType & input ) |
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{return static_cast<TExternalType>( input.GetLuminance() );} |
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}; |
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} // end namespace Accessor |
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/** \class RGBToLuminanceImageAdaptor |
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* \brief Presents a color image as being composed of the Luminance of its pixels. |
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* |
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* Additional casting is performed according to the input and output image |
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* types following C++ default casting rules. The input color pixel type must |
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* provide a GetLuminance() method. |
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* |
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* \ingroup ImageAdaptors |
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*/ |
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template <class TImage, class TOutputPixelType> |
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class ITK_EXPORT RGBToLuminanceImageAdaptor : public |
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******ImageAdaptor<TImage, |
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Accessor::RGBToLuminancePixelAccessor< |
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typename TImage::PixelType, |
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TOutputPixelType> > |
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{ |
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public: |
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/** Standard class typedefs. */ |
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typedef RGBToLuminanceImageAdaptor Self; |
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typedef ImageAdaptor<TImage, Accessor::RGBToLuminancePixelAccessor< |
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typename TImage::PixelType, |
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TDA |
TOutputPixelType> > Superclass; |
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TDA |
typedef SmartPointer<Self> Pointer; |
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typedef SmartPointer<const Self> ConstPointer; |
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/** Method for creation through the object factory. */ |
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itkNewMacro(Self); |
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/** Run-time type information (and related methods). */ |
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itkTypeMacro( RGBToLuminanceImageAdaptor, ImageAdaptor ); |
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*protected: |
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RGBToLuminanceImageAdaptor() {} |
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virtual ~RGBToLuminanceImageAdaptor() {} |
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*private: |
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RGBToLuminanceImageAdaptor(const Self&); //purposely not implemented |
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void operator=(const Self&); //purposely not implemented |
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}; |
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} // end namespace itk |
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#endif |
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