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itkGradientRecursiveGaussianImageFilter.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkGradientRecursiveGaussianImageFilter.h,v $
00005   Language:  C++
00006   Date:      $Date: 2002/09/11 19:39:01 $
00007   Version:   $Revision: 1.25 $
00008 
00009   Copyright (c) 2002 Insight 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 __itkGradientRecursiveGaussianImageFilter_h
00018 #define __itkGradientRecursiveGaussianImageFilter_h
00019 
00020 #include "itkRecursiveGaussianImageFilter.h"
00021 #include "itkNthElementImageAdaptor.h"
00022 #include "itkImage.h"
00023 #include "itkPixelTraits.h"
00024 
00025 
00026 namespace itk
00027 {
00028 
00040 // NOTE that the ITK_TYPENAME macro has to be used here in lieu 
00041 // of "typename" because VC++ doesn't like the typename keyword 
00042 // on the defaults of template parameters
00043 template <typename TInputImage, 
00044           typename TOutputImage= Image< CovariantVector< 
00045                       ITK_TYPENAME NumericTraits< ITK_TYPENAME TInputImage::PixelType>::RealType,
00046                       ::itk::GetImageDimension<TInputImage>::ImageDimension >,
00047                           ::itk::GetImageDimension<TInputImage>::ImageDimension > >
00048 class ITK_EXPORT GradientRecursiveGaussianImageFilter:
00049   public ImageToImageFilter<TInputImage,TOutputImage>
00050 {
00051 public:
00053   typedef GradientRecursiveGaussianImageFilter  Self;
00054   typedef ImageToImageFilter<TInputImage,TOutputImage> Superclass;
00055   typedef SmartPointer<Self>                   Pointer;
00056   typedef SmartPointer<const Self>        ConstPointer;
00057   
00058   
00060   typedef typename TInputImage::PixelType                PixelType;
00061   typedef typename NumericTraits<PixelType>::RealType    RealType;
00062 
00067   typedef NthElementImageAdaptor< TOutputImage,
00068                                   RealType >  OutputImageAdaptorType;
00069   typedef typename OutputImageAdaptorType::Pointer OutputImageAdaptorPointer;
00070 
00072   typedef RecursiveGaussianImageFilter<
00073                                   TInputImage,
00074                                   TInputImage
00075                                   >    GaussianFilterType;
00076 
00078   typedef typename GaussianFilterType::Pointer   GaussianFilterPointer;
00080   typedef typename TOutputImage::Pointer          OutputImagePointer;                                  
00082   itkStaticConstMacro(ImageDimension, unsigned int,
00083                       TInputImage::ImageDimension);
00084 
00086   typedef TOutputImage      OutputImageType;
00087   typedef typename          OutputImageType::PixelType      OutputPixelType;
00088   typedef typename PixelTraits<OutputPixelType>::ValueType  OutputComponentType;
00089 
00091   itkNewMacro(Self);
00092 
00094   void SetSigma( RealType sigma );
00095 
00097   itkSetMacro( NormalizeAcrossScale, bool );
00098   itkGetMacro( NormalizeAcrossScale, bool );
00099 
00100 protected:
00101   GradientRecursiveGaussianImageFilter();
00102   virtual ~GradientRecursiveGaussianImageFilter() {};
00103   void PrintSelf(std::ostream& os, Indent indent) const;
00104   
00106   void GenerateData( void );
00107 
00108 private:
00109   GradientRecursiveGaussianImageFilter(const Self&); //purposely not implemented
00110   void operator=(const Self&); //purposely not implemented
00111   
00112   GaussianFilterPointer         m_SmoothingFilters[ImageDimension-1];
00113   GaussianFilterPointer         m_DerivativeFilter;
00114   OutputImageAdaptorPointer     m_ImageAdaptor;
00115 
00117   bool m_NormalizeAcrossScale; 
00118 
00119 };
00120 
00121 } // end namespace itk
00122 
00123 #ifndef ITK_MANUAL_INSTANTIATION
00124 #include "itkGradientRecursiveGaussianImageFilter.txx"
00125 #endif
00126 
00127 #endif
00128 
00129 
00130 
00131 

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