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itkSmoothingRecursiveGaussianImageFilter.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkSmoothingRecursiveGaussianImageFilter.h,v $
00005   Language:  C++
00006   Date:      $Date: 2004/02/02 21:42:22 $
00007   Version:   $Revision: 1.8 $
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 __itkSmoothingRecursiveGaussianImageFilter_h
00018 #define __itkSmoothingRecursiveGaussianImageFilter_h
00019 
00020 #include "itkRecursiveGaussianImageFilter.h"
00021 #include "itkCastImageFilter.h"
00022 #include "itkImage.h"
00023 #include "itkPixelTraits.h"
00024 #include "itkCommand.h"
00025 
00026 
00027 namespace itk
00028 {
00029 
00041 template <typename TInputImage, 
00042           typename TOutputImage= TInputImage >
00043 class ITK_EXPORT SmoothingRecursiveGaussianImageFilter:
00044     public ImageToImageFilter<TInputImage,TOutputImage>
00045 {
00046 public:
00048   typedef SmoothingRecursiveGaussianImageFilter  Self;
00049   typedef ImageToImageFilter<TInputImage,TOutputImage> Superclass;
00050   typedef SmartPointer<Self>                   Pointer;
00051   typedef SmartPointer<const Self>        ConstPointer;
00052   
00053   
00055   typedef TInputImage                                    InputImageType;
00056   typedef TOutputImage                                   OutputImageType;
00057   typedef typename TInputImage::PixelType                PixelType;
00058   typedef typename NumericTraits<PixelType>::RealType    RealType;
00059 
00060 
00062   itkStaticConstMacro(ImageDimension, unsigned int,
00063                       TInputImage::ImageDimension);
00064 
00069   typedef float                                            InternalRealType;
00070   typedef Image<InternalRealType, 
00071                 itkGetStaticConstMacro(ImageDimension) >   RealImageType;
00072 
00074   typedef RecursiveGaussianImageFilter<
00075     InputImageType,
00076     RealImageType
00077     >    FirstGaussianFilterType;
00078 
00080   typedef RecursiveGaussianImageFilter<
00081     RealImageType,
00082     RealImageType
00083     >    InternalGaussianFilterType;
00084 
00086   typedef CastImageFilter<
00087     RealImageType,
00088     OutputImageType
00089     >    CastingFilterType;
00090 
00091 
00093   typedef typename InternalGaussianFilterType::Pointer    InternalGaussianFilterPointer;
00094 
00096   typedef typename FirstGaussianFilterType::Pointer       FirstGaussianFilterPointer;
00097 
00099   typedef typename CastingFilterType::Pointer             CastingFilterPointer;
00100 
00102   typedef typename OutputImageType::Pointer                  OutputImagePointer;                                  
00103 
00105   itkNewMacro(Self);
00106 
00108   void SetSigma( RealType sigma );
00109 
00111   void SetNormalizeAcrossScale( bool normalizeInScaleSpace );
00112   itkGetMacro( NormalizeAcrossScale, bool );
00113 
00114 protected:
00115   SmoothingRecursiveGaussianImageFilter();
00116   virtual ~SmoothingRecursiveGaussianImageFilter() {};
00117   void PrintSelf(std::ostream& os, Indent indent) const;
00118   
00120   void GenerateData( void );
00121 
00127   virtual void GenerateInputRequestedRegion() throw(InvalidRequestedRegionError);
00128 
00129   // Override since the filter produces the entire dataset
00130   void EnlargeOutputRequestedRegion(DataObject *output);
00131 
00132 private:
00133   SmoothingRecursiveGaussianImageFilter(const Self&); //purposely not implemented
00134   void operator=(const Self&); //purposely not implemented
00135   
00136   InternalGaussianFilterPointer         m_SmoothingFilters[ImageDimension-1];
00137   FirstGaussianFilterPointer            m_FirstSmoothingFilter;
00138   CastingFilterPointer                  m_CastingFilter;
00139 
00141   bool m_NormalizeAcrossScale; 
00142 
00143 };
00144 
00145 } // end namespace itk
00146 
00147 #ifndef ITK_MANUAL_INSTANTIATION
00148 #include "itkSmoothingRecursiveGaussianImageFilter.txx"
00149 #endif
00150 
00151 #endif
00152 
00153 
00154 
00155 

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