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itkDeformationFieldJacobianDeterminantFilter.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkDeformationFieldJacobianDeterminantFilter.h,v $
00005   Language:  C++
00006   Date:      $Date: 2005/01/21 12:13:43 $
00007   Version:   $Revision: 1.2 $
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 __itkDeformationFieldJacobianDeterminantFilter_h
00018 #define __itkDeformationFieldJacobianDeterminantFilter_h
00019 
00020 #include "itkConstNeighborhoodIterator.h"
00021 #include "itkNeighborhoodIterator.h"
00022 #include "itkImageToImageFilter.h"
00023 #include "itkImage.h"
00024 #include "itkVector.h"
00025 #include "vnl/vnl_matrix.h"
00026 #include "vnl/vnl_det.h"
00027 
00028 namespace itk
00029 {
00105 template < typename TInputImage,
00106            typename TRealType = float,
00107            typename TOutputImage = Image< TRealType,
00108                                           ::itk::GetImageDimension<TInputImage>::ImageDimension >
00109 >
00110 class ITK_EXPORT DeformationFieldJacobianDeterminantFilter :
00111     public ImageToImageFilter< TInputImage, TOutputImage >
00112 {
00113 public:
00115   typedef DeformationFieldJacobianDeterminantFilter Self;
00116   typedef ImageToImageFilter< TInputImage, TOutputImage > Superclass;
00117   typedef SmartPointer<Self> Pointer;
00118   typedef SmartPointer<const Self>  ConstPointer;
00119 
00121   itkNewMacro(Self);
00122 
00124   itkTypeMacro(DeformationFieldJacobianDeterminantFilter, ImageToImageFilter);
00125   
00128   typedef typename TOutputImage::PixelType OutputPixelType;
00129   typedef typename TInputImage::PixelType  InputPixelType;
00130 
00132   typedef TInputImage  InputImageType;
00133   typedef TOutputImage OutputImageType;
00134   typedef typename InputImageType::Pointer  InputImagePointer;
00135   typedef typename OutputImageType::Pointer OutputImagePointer;
00136   
00138   itkStaticConstMacro(ImageDimension, unsigned int,
00139                       TOutputImage::ImageDimension);
00140   
00142   itkStaticConstMacro(VectorDimension, unsigned int,
00143                       InputPixelType::Dimension);
00144 
00146   typedef TRealType RealType;
00147   typedef Vector<TRealType, ::itk::GetVectorDimension<InputPixelType>::VectorDimension> RealVectorType;
00148   typedef Image<RealVectorType, ::itk::GetImageDimension<TInputImage>::ImageDimension>  RealVectorImageType;
00149   
00150 
00153   typedef ConstNeighborhoodIterator<RealVectorImageType> ConstNeighborhoodIteratorType;
00154   typedef typename ConstNeighborhoodIteratorType::RadiusType RadiusType;  
00155   
00157   typedef typename Superclass::OutputImageRegionType OutputImageRegionType;
00158 
00167   virtual void GenerateInputRequestedRegion() throw(InvalidRequestedRegionError);
00168 
00172   void SetUseImageSpacingOn()
00173   { this->SetUseImageSpacing(true); }
00174 
00178   void SetUseImageSpacingOff()
00179   { this->SetUseImageSpacing(false); }
00180 
00183   void SetUseImageSpacing(bool);                         
00184   itkGetMacro(UseImageSpacing, bool);
00185 
00188   void SetDerivativeWeights(TRealType data[]);
00189   itkGetVectorMacro(DerivativeWeights, const TRealType, itk::GetImageDimension<TInputImage>::ImageDimension);
00190 
00191 protected:
00192   DeformationFieldJacobianDeterminantFilter();
00193   virtual ~DeformationFieldJacobianDeterminantFilter() {}
00194 
00198   void BeforeThreadedGenerateData ();
00199 
00212   void ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread,
00213                             int threadId );
00214 
00215   void PrintSelf(std::ostream& os, Indent indent) const;
00216 
00217   typedef typename InputImageType::Superclass ImageBaseType;
00218 
00220   itkGetConstObjectMacro( RealValuedInputImage, ImageBaseType );
00221 
00223   itkGetConstReferenceMacro( NeighborhoodRadius, RadiusType );
00224   itkSetMacro( NeighborhoodRadius, RadiusType );
00225   
00226 
00227   TRealType EvaluateAtNeighborhood
00228   (const ConstNeighborhoodIteratorType &it) const
00229   {
00230     unsigned i, j;
00231     vnl_matrix_fixed<TRealType,ImageDimension,VectorDimension> J;
00232 
00233     for (i = 0; i < ImageDimension; ++i)
00234       {
00235       for (j = 0; j < VectorDimension; ++j)
00236         {
00237         J[i][j] = m_DerivativeWeights[i]
00238                   * 0.5 * (it.GetNext(i)[j] - it.GetPrevious(i)[j]);
00239         }
00240       }
00241     
00242     return vnl_det(J);
00243   }
00244 
00246   TRealType m_DerivativeWeights[itk::GetImageDimension<TInputImage>::ImageDimension];
00247 
00248 private:
00249   bool m_UseImageSpacing;
00250   int m_RequestedNumberOfThreads;
00251 
00252   typename ImageBaseType::ConstPointer m_RealValuedInputImage;
00253   
00254   DeformationFieldJacobianDeterminantFilter(const Self&); //purposely not implemented
00255   void operator=(const Self&); //purposely not implemented
00256 
00257   RadiusType    m_NeighborhoodRadius;  
00258 };
00259   
00260 } // end namespace itk
00261 
00262 #ifndef ITK_MANUAL_INSTANTIATION
00263 #include "itkDeformationFieldJacobianDeterminantFilter.txx"
00264 #endif
00265 
00266 #endif

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