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itkGaussianDerivativeImageFunction.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkGaussianDerivativeImageFunction.h,v $
00005   Language:  C++
00006   Date:      $Date: 2009-02-05 19:04:56 $
00007   Version:   $Revision: 1.13 $
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 __itkGaussianDerivativeImageFunction_h
00018 #define __itkGaussianDerivativeImageFunction_h
00019 
00020 #include "itkNeighborhoodOperatorImageFunction.h"
00021 #include "itkImageFunction.h"
00022 #include "itkGaussianDerivativeSpatialFunction.h"
00023 #include "itkGaussianSpatialFunction.h"
00024 
00025 namespace itk
00026 {
00027 
00037 template <class TInputImage,class TOutput=double>
00038 class ITK_EXPORT GaussianDerivativeImageFunction :
00039   public ImageFunction< TInputImage,
00040     Vector<TOutput,::itk::GetImageDimension<TInputImage>::ImageDimension>,
00041     TOutput >
00042 {
00043 public:
00044 
00046   typedef GaussianDerivativeImageFunction Self;
00047 
00049   typedef ImageFunction<TInputImage,
00050     Vector<TOutput,::itk::GetImageDimension<TInputImage>::ImageDimension>,
00051     TOutput > Superclass;
00052 
00054   typedef SmartPointer<Self>            Pointer;
00055   typedef SmartPointer<const Self>      ConstPointer;
00056 
00058   itkNewMacro(Self);
00059 
00061   itkTypeMacro( GaussianDerivativeImageFunction, ImageFunction );
00062 
00064   typedef TInputImage                                 InputImageType;
00065   typedef typename InputImageType::PixelType          InputPixelType;
00066   typedef typename InputImageType::IndexType          IndexType;
00067 
00069   itkStaticConstMacro(ImageDimension2, unsigned int,
00070                       InputImageType::ImageDimension);
00071 
00072   typedef ContinuousIndex<TOutput,itkGetStaticConstMacro(ImageDimension2)>
00073           ContinuousIndexType;
00074 
00075 
00076   typedef Neighborhood<InputPixelType, itkGetStaticConstMacro(ImageDimension2)> NeighborhoodType;
00077   typedef Neighborhood<TOutput, itkGetStaticConstMacro(ImageDimension2)> OperatorNeighborhoodType;
00078 
00079   typedef Vector<TOutput,itkGetStaticConstMacro(ImageDimension2)>  VectorType;
00080   typedef typename Superclass::OutputType  OutputType;
00081   typedef FixedArray<OperatorNeighborhoodType,2*itkGetStaticConstMacro(ImageDimension2)> OperatorArrayType;
00082   typedef NeighborhoodOperatorImageFunction<InputImageType,
00083                                              TOutput> OperatorImageFunctionType;
00084   typedef typename OperatorImageFunctionType::Pointer OperatorImageFunctionPointer;
00085 
00086   typedef GaussianDerivativeSpatialFunction<TOutput,1>  GaussianDerivativeFunctionType;
00087   typedef typename GaussianDerivativeFunctionType::Pointer GaussianDerivativeFunctionPointer;
00088 
00089   typedef GaussianSpatialFunction<TOutput,1>        GaussianFunctionType;
00090   typedef typename GaussianFunctionType::Pointer    GaussianFunctionPointer;
00091 
00093   typedef Point<TOutput,itkGetStaticConstMacro(ImageDimension2)> PointType;
00094 
00096   virtual OutputType Evaluate(const PointType& point) const;
00097 
00098 
00100   virtual OutputType EvaluateAtIndex( const IndexType & index ) const;
00101 
00103   virtual OutputType EvaluateAtContinuousIndex( 
00104     const ContinuousIndexType & index ) const;
00105 
00112   void SetSigma( const double* sigma);
00113   void SetSigma( const double sigma);
00114   const double* GetSigma() const {return m_Sigma;}
00116 
00118   void SetExtent( const double* extent);
00119   void SetExtent( const double extent);
00120   const double* GetExtent() const {return m_Extent;}
00122 
00127   virtual void SetInputImage( const InputImageType * ptr );
00128 
00129 protected:
00130   GaussianDerivativeImageFunction();
00131   GaussianDerivativeImageFunction( const Self& ){};
00132 
00133   ~GaussianDerivativeImageFunction(){};
00134 
00135   void operator=( const Self& ){};
00136   void PrintSelf(std::ostream& os, Indent indent) const;
00137 
00138   void RecomputeGaussianKernel();
00139   void RecomputeContinuousGaussianKernel(
00140            const double* offset) const;
00141 
00142 
00143 private:
00144 
00145   double                        m_Sigma[ImageDimension2];
00146 
00149   mutable OperatorArrayType     m_OperatorArray;
00150   mutable OperatorArrayType     m_ContinuousOperatorArray;
00151 
00153   OperatorImageFunctionPointer  m_OperatorImageFunction;
00154   double m_Extent[ImageDimension2];
00155 
00157   bool m_UseImageSpacing;
00158 
00160   GaussianDerivativeFunctionPointer m_GaussianDerivativeFunction;
00161   GaussianFunctionPointer           m_GaussianFunction;
00162 
00163 };
00164 
00165 } // namespace itk
00166 
00167 // Define instantiation macro for this template.
00168 #define ITK_TEMPLATE_GaussianDerivativeImageFunction(_, EXPORT, x, y) namespace itk { \
00169   _(2(class EXPORT GaussianDerivativeImageFunction< ITK_TEMPLATE_2 x >)) \
00170   namespace Templates { typedef GaussianDerivativeImageFunction< ITK_TEMPLATE_2 x > \
00171                                                   GaussianDerivativeImageFunction##y; } \
00172   }
00173 
00174 #if ITK_TEMPLATE_EXPLICIT
00175 # include "Templates/itkGaussianDerivativeImageFunction+-.h"
00176 #endif
00177 
00178 #if ITK_TEMPLATE_TXX
00179 # include "itkGaussianDerivativeImageFunction.txx"
00180 #endif
00181 
00182 #endif
00183 

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