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00017 #ifndef __itkGradientMagnitudeRecursiveGaussianImageFilter_h
00018 #define __itkGradientMagnitudeRecursiveGaussianImageFilter_h
00019
00020 #include "itkNthElementImageAdaptor.h"
00021 #include "itkImage.h"
00022 #include "itkPixelTraits.h"
00023 #include "itkRecursiveGaussianImageFilter.h"
00024 #include "itkInPlaceImageFilter.h"
00025 #include "itkSqrtImageFilter.h"
00026 #include "itkBinaryFunctorImageFilter.h"
00027
00028 namespace itk
00029 {
00030
00042
00043
00044
00045 template <typename TInputImage,
00046 typename TOutputImage= TInputImage >
00047 class ITK_EXPORT GradientMagnitudeRecursiveGaussianImageFilter:
00048 public InPlaceImageFilter<TInputImage,TOutputImage>
00049 {
00050 public:
00052 typedef GradientMagnitudeRecursiveGaussianImageFilter Self;
00053 typedef InPlaceImageFilter<TInputImage,TOutputImage> Superclass;
00054 typedef SmartPointer<Self> Pointer;
00055 typedef SmartPointer<const Self> ConstPointer;
00056
00057
00059 typedef TInputImage InputImageType;
00060 typedef typename InputImageType::PixelType PixelType;
00061
00062
00064 itkStaticConstMacro(ImageDimension, unsigned int,
00065 TInputImage::ImageDimension);
00066
00067 typedef typename NumericTraits<PixelType>::RealType RealType;
00068
00073 typedef float InternalRealType;
00074 typedef Image<InternalRealType,
00075 itkGetStaticConstMacro(ImageDimension) > RealImageType;
00076
00078 typedef RecursiveGaussianImageFilter<
00079 RealImageType,
00080 RealImageType
00081 > GaussianFilterType;
00082
00084 typedef RecursiveGaussianImageFilter<
00085 InputImageType,
00086 RealImageType
00087 > DerivativeFilterType;
00088
00090 typedef SqrtImageFilter<
00091 RealImageType,
00092 TOutputImage
00093 > SqrtFilterType;
00094
00096 typedef typename GaussianFilterType::Pointer GaussianFilterPointer;
00097
00099 typedef typename DerivativeFilterType::Pointer DerivativeFilterPointer;
00100
00101 typedef typename SqrtFilterType::Pointer SqrtFilterPointer;
00102
00104 typedef typename TOutputImage::Pointer OutputImagePointer;
00105
00107 typedef TOutputImage OutputImageType;
00108 typedef typename OutputImageType::PixelType OutputPixelType;
00109
00111 typedef Image< InternalRealType,
00112 itkGetStaticConstMacro(ImageDimension) > CumulativeImageType;
00113 typedef typename CumulativeImageType::Pointer CumulativeImagePointer;
00114
00116 itkNewMacro(Self);
00117
00119 itkTypeMacro(GradientMagnitudeRecursiveGaussianImageFilter,
00120 InPlaceImageFilter);
00121
00123 void SetSigma( RealType sigma );
00124 RealType GetSigma();
00126
00128 void SetNormalizeAcrossScale( bool normalizeInScaleSpace );
00129 itkGetConstMacro( NormalizeAcrossScale, bool );
00131
00132 void SetNumberOfThreads( int nb );
00133
00134
00135 #ifdef ITK_USE_CONCEPT_CHECKING
00136
00137 itkConceptMacro(InputHasNumericTraitsCheck,
00138 (Concept::HasNumericTraits<PixelType>));
00139
00141 #endif
00142
00143 protected:
00144 GradientMagnitudeRecursiveGaussianImageFilter();
00145 virtual ~GradientMagnitudeRecursiveGaussianImageFilter() {};
00146 void PrintSelf(std::ostream& os, Indent indent) const;
00147
00149 void GenerateData( void );
00150
00157 virtual void GenerateInputRequestedRegion() throw(InvalidRequestedRegionError);
00158
00162 void EnlargeOutputRequestedRegion(DataObject *output);
00163
00164 private:
00165 GradientMagnitudeRecursiveGaussianImageFilter(const Self&);
00166 void operator=(const Self&);
00167
00168 class SqrSpacing
00169 {
00170 public:
00171 SqrSpacing() : m_Spacing(0) {};
00172 ~SqrSpacing() {};
00173 bool operator!=( const SqrSpacing & other ) const
00174 {
00175 return !(*this == other);
00176 }
00177 bool operator==( const SqrSpacing & other ) const
00178 {
00179 return other.m_Spacing == m_Spacing;
00180 }
00181 inline InternalRealType operator()( const InternalRealType & a, const InternalRealType & b )
00182 {
00183 return a + vnl_math_sqr( b / m_Spacing );
00184 }
00185
00186 double m_Spacing;
00187 };
00188
00189 typedef BinaryFunctorImageFilter< RealImageType, RealImageType, RealImageType, SqrSpacing > SqrSpacingFilterType;
00190 typedef typename SqrSpacingFilterType::Pointer SqrSpacingFilterPointer;
00191
00192 GaussianFilterPointer m_SmoothingFilters[ImageDimension-1];
00193 DerivativeFilterPointer m_DerivativeFilter;
00194 SqrSpacingFilterPointer m_SqrSpacingFilter;
00195 SqrtFilterPointer m_SqrtFilter;
00196
00198 bool m_NormalizeAcrossScale;
00199
00200
00201 };
00202
00203 }
00204
00205 #ifndef ITK_MANUAL_INSTANTIATION
00206 #include "itkGradientMagnitudeRecursiveGaussianImageFilter.txx"
00207 #endif
00208
00209 #endif
00210