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itkDiscreteGaussianImageFilter.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkDiscreteGaussianImageFilter.h,v $
00005   Language:  C++
00006   Date:      $Date: 2004/01/08 23:34:13 $
00007   Version:   $Revision: 1.37 $
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 __itkDiscreteGaussianImageFilter_h
00018 #define __itkDiscreteGaussianImageFilter_h
00019 
00020 #include "itkImageToImageFilter.h"
00021 #include "itkFixedArray.h"
00022 #include "itkImage.h"
00023 
00024 namespace itk
00025 {
00055 template <class TInputImage, class TOutputImage >
00056 class ITK_EXPORT DiscreteGaussianImageFilter :
00057     public ImageToImageFilter< TInputImage, TOutputImage > 
00058 {
00059 public:
00061   typedef DiscreteGaussianImageFilter Self;
00062   typedef ImageToImageFilter< TInputImage, TOutputImage > Superclass;
00063   typedef SmartPointer<Self> Pointer;
00064   typedef SmartPointer<const Self>  ConstPointer;
00065 
00067   itkNewMacro(Self);
00068 
00070   itkTypeMacro(DiscreteGaussianImageFilter, ImageToImageFilter);
00071   
00073   typedef TInputImage  InputImageType;
00074   typedef TOutputImage OutputImageType;
00075 
00078   typedef typename TOutputImage::PixelType OutputPixelType;
00079   typedef typename TOutputImage::InternalPixelType OutputInternalPixelType;
00080   typedef typename TInputImage::PixelType InputPixelType;
00081   typedef typename TInputImage::InternalPixelType InputInternalPixelType;
00082 
00085   itkStaticConstMacro(ImageDimension, unsigned int,
00086                       TOutputImage::ImageDimension);
00087   
00089   typedef FixedArray<double, itkGetStaticConstMacro(ImageDimension)> ArrayType;
00090 
00096   itkSetMacro(Variance, ArrayType);
00097   itkGetMacro(Variance, const ArrayType);
00098 
00102   itkSetMacro(MaximumError, ArrayType);
00103   itkGetMacro(MaximumError, const ArrayType);
00104 
00107   itkGetMacro(MaximumKernelWidth, int);
00108   itkSetMacro(MaximumKernelWidth, int);
00109 
00110   itkGetMacro(FilterDimensionality, unsigned int);
00111   itkSetMacro(FilterDimensionality, unsigned int);
00112   
00115   void SetVariance (const typename ArrayType::ValueType v)
00116     {
00117       m_Variance.Fill(v);
00118     }
00119 
00120   void SetMaximumError (const typename ArrayType::ValueType v)
00121     {
00122       m_MaximumError.Fill(v);
00123     }
00124 
00125   void SetVariance (const double *v)
00126     {
00127       ArrayType dv;
00128       for (unsigned int i = 0; i < ImageDimension; i++)
00129         {
00130         dv[i] = v[i];
00131         }
00132       this->SetVariance(dv);
00133     }
00134 
00135   void SetVariance (const float *v)
00136     {
00137       ArrayType dv;
00138       for (unsigned int i = 0; i < ImageDimension; i++)
00139         {
00140         dv[i] = v[i];
00141         }
00142       this->SetVariance(dv);
00143     }
00144 
00145   void SetMaximumError (const double *v)
00146     {
00147       ArrayType dv;
00148       for (unsigned int i = 0; i < ImageDimension; i++)
00149         {
00150         dv[i] = v[i];
00151         }
00152       this->SetMaximumError(dv);
00153     }
00154 
00155   void SetMaximumError (const float *v)
00156     {
00157       ArrayType dv;
00158       for (unsigned int i = 0; i < ImageDimension; i++)
00159         {
00160         dv[i] = v[i];
00161         }
00162       this->SetMaximumError(dv);
00163     }
00164 
00168   void SetUseImageSpacingOn()
00169   { this->SetUseImageSpacing(true); }
00170   
00173   void SetUseImageSpacingOff()
00174   { this->SetUseImageSpacing(false); }
00175   
00178   itkSetMacro(UseImageSpacing, bool);
00179   itkGetMacro(UseImageSpacing, bool);
00180   
00187   virtual void GenerateInputRequestedRegion() throw(InvalidRequestedRegionError);
00188 
00189 protected:
00190   DiscreteGaussianImageFilter()
00191   {
00192     m_Variance.Fill(0.0);
00193     m_MaximumError.Fill(0.01);
00194     m_MaximumKernelWidth = 32;
00195     m_UseImageSpacing = true;
00196     m_FilterDimensionality = ImageDimension;
00197   }
00198   virtual ~DiscreteGaussianImageFilter() {}
00199   void PrintSelf(std::ostream& os, Indent indent) const;
00200 
00206   void GenerateData();
00207 
00208   
00209 private:
00210   DiscreteGaussianImageFilter(const Self&); //purposely not implemented
00211   void operator=(const Self&); //purposely not implemented
00212 
00214   ArrayType m_Variance;
00215 
00219   ArrayType m_MaximumError;
00220 
00223   int m_MaximumKernelWidth;
00224 
00226   unsigned int m_FilterDimensionality;
00227 
00229   bool m_UseImageSpacing;
00230 };
00231   
00232 } // end namespace itk
00233 
00234 #ifndef ITK_MANUAL_INSTANTIATION
00235 #include "itkDiscreteGaussianImageFilter.txx"
00236 #endif
00237 
00238 #endif

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