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itkBSplineResampleImageFilterBase.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkBSplineResampleImageFilterBase.h,v $
00005   Language:  C++
00006   Date:      $Date: 2003/09/10 14:28:44 $
00007   Version:   $Revision: 1.5 $
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   Portions of this code are covered under the VTK copyright.
00013   See VTKCopyright.txt or http://www.kitware.com/VTKCopyright.htm for details.
00014 
00015      This software is distributed WITHOUT ANY WARRANTY; without even 
00016      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
00017      PURPOSE.  See the above copyright notices for more information.
00018 
00019 =========================================================================*/
00020 
00021 #ifndef __itkBSplineResampleImageFilterBase_h
00022 #define __itkBSplineResampleImageFilterBase_h
00023 
00024 #include <vector>
00025 
00026 #include "itkImageLinearIteratorWithIndex.h"
00027 #include "itkImageLinearConstIteratorWithIndex.h"
00028 #include "itkImageRegionIterator.h"   // Used for the output iterator needs to match filter program
00029 #include "itkProgressReporter.h"
00030 #include "itkImageToImageFilter.h"
00031 
00032 namespace itk
00033 {
00073 template <class TInputImage, class TOutputImage>
00074 class ITK_EXPORT BSplineResampleImageFilterBase : 
00075     public ImageToImageFilter<TInputImage,TOutputImage>  
00076 {
00077 
00078 public:
00080   typedef BSplineResampleImageFilterBase       Self;
00081   typedef ImageToImageFilter<TInputImage,TOutputImage>  Superclass;
00082   typedef SmartPointer<Self>                    Pointer;
00083   typedef SmartPointer<const Self>              ConstPointer;
00084 
00086   itkTypeMacro(BSplineResampleImageFilterBase, ImageToImageFilter);
00087 
00088  
00090   //  Must be sustantiated through another class. itkNewMacro( Self );
00091 
00093   typedef typename Superclass::InputImageType InputImageType;
00094 
00096   itkStaticConstMacro(ImageDimension, unsigned int,
00097                       TInputImage::ImageDimension);
00098 
00100   typedef typename TInputImage::IndexType IndexType;
00101 
00103   typedef typename TInputImage::SizeType SizeType;
00104 
00106   typedef typename TInputImage::RegionType RegionType;
00107 
00109   typedef typename Superclass::OutputImagePixelType OutputImagePixelType;
00110 
00112   typedef itk::ImageLinearConstIteratorWithIndex<TInputImage> ConstInputImageIterator;
00113 
00115   typedef itk::ImageLinearConstIteratorWithIndex<TOutputImage> ConstOutputImageIterator;
00116 
00118   typedef itk::ImageLinearIteratorWithIndex<TOutputImage> OutputImageIterator;
00119 
00122   void SetSplineOrder(int SplineOrder);
00123 
00125   itkGetMacro(SplineOrder, int);
00126 
00127 
00128 protected:
00130   void ReduceNDImage(OutputImageIterator &OutItr);
00131 
00133   void ExpandNDImage(OutputImageIterator &OutItr);
00134 
00137   virtual void InitializePyramidSplineFilter(int SplineOrder);
00138 
00140   virtual void Reduce1DImage( 
00141     const std::vector<double> & In, 
00142     OutputImageIterator & Iter, 
00143     unsigned int traverseSize,
00144     ProgressReporter &progress
00145     );
00146 
00148   virtual void Expand1DImage( 
00149     const std::vector<double> & In, 
00150     OutputImageIterator & Iter, 
00151     unsigned int traverseSize,
00152     ProgressReporter &progress
00153     );
00154 
00155   BSplineResampleImageFilterBase();
00156   virtual ~BSplineResampleImageFilterBase() {};
00157   void PrintSelf(std::ostream& os, Indent indent) const;
00158 
00159   int                       m_SplineOrder;// User specified spline order 
00160   int                       m_gSize;      // downsampling filter size
00161   int                       m_hSize;      // upsampling filter size
00162   std::vector<double>       m_g;          // downsampling filter coefficients
00163   std::vector<double>       m_h;          // upsampling filter coefficients
00164 
00165 private:
00166 
00167   // Resizes m_Scratch Variable based on image sizes
00168   void InitializeScratch(SizeType DataLength);
00169 
00170   // Copies a line of data from the input to the m_Scratch for subsequent processing
00171   void CopyInputLineToScratch(ConstInputImageIterator & Iter);
00172   void CopyOutputLineToScratch(ConstOutputImageIterator & Iter);
00173   void CopyLineToScratch(ConstInputImageIterator & Iter);
00174 
00175 
00176   std::vector<double>       m_Scratch;        // temp storage for processing of Coefficients
00177 
00178   BSplineResampleImageFilterBase( const Self& ); //purposely not implemented
00179   void operator=( const Self& ); //purposely not implemented
00180   
00181 };
00182 
00183 } // namespace itk
00184 
00185 #ifndef ITK_MANUAL_INSTANTIATION
00186 #include "itkBSplineResampleImageFilterBase.txx"
00187 #endif
00188 
00189 #endif
00190 

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