add resample function

diff --git a/itk/clitkResampleImageWithOptionsFilter.h b/itk/clitkResampleImageWithOptionsFilter.h
index d90c724f119a07ad2a4045dabe966dc05f6bead6..3fa1871f4a1da08af66379b3ae2a3244b260c5d3 100644 (file)
--- a/itk/clitkResampleImageWithOptionsFilter.h
+++ b/itk/clitkResampleImageWithOptionsFilter.h
@@ -28,123 +28,126 @@ namespace clitk {
   /*
     Image resampling with several interpolations and Gaussian filtering included.
   */
-  //--------------------------------------------------------------------
-  
-  template <class TInputImage, class TOutputImage=TInputImage>
-  class ITK_EXPORT ResampleImageWithOptionsFilter: 
-    public itk::ImageToImageFilter<TInputImage, TOutputImage> {
+  //-------------------------------------------------------------------- 
+  template <class InputImageType, class OutputImageType=InputImageType>
+    class ITK_EXPORT ResampleImageWithOptionsFilter: 
+  public itk::ImageToImageFilter<InputImageType, OutputImageType> {
 
   public:
-    /** Standard class typedefs. */
-    typedef ResampleImageWithOptionsFilter                     Self;
-    typedef itk::ImageToImageFilter<TInputImage, TOutputImage> Superclass;
-    typedef itk::SmartPointer<Self>                            Pointer;
-    typedef itk::SmartPointer<const Self>                      ConstPointer;
+  /** Standard class typedefs. */
+  typedef ResampleImageWithOptionsFilter                     Self;
+  typedef itk::ImageToImageFilter<InputImageType, OutputImageType> Superclass;
+  typedef itk::SmartPointer<Self>                            Pointer;
+  typedef itk::SmartPointer<const Self>                      ConstPointer;
     
-    /** Method for creation through the object factory. */
-    itkNewMacro(Self);
+  /** Method for creation through the object factory. */
+  itkNewMacro(Self);
     
-    /** Run-time type information (and related methods). */
-    itkTypeMacro(ResampleImageWithOptionsFilter, ImageToImageFilter);
-
-    /** Some convenient typedefs. */
-    typedef TInputImage                           InputImageType;
-    typedef typename InputImageType::ConstPointer InputImageConstPointer;
-    typedef typename InputImageType::Pointer      InputImagePointer;
-    typedef typename InputImageType::RegionType   InputImageRegionType; 
-    typedef typename InputImageType::PixelType    InputImagePixelType;
-    typedef typename InputImageType::SpacingType  InputImageSpacingType;
-    typedef typename InputImageType::SizeType     InputImageSizeType;
+  /** Run-time type information (and related methods). */
+  itkTypeMacro(ResampleImageWithOptionsFilter, ImageToImageFilter);
+
+  /** Some convenient typedefs. */
+  typedef typename InputImageType::ConstPointer InputImageConstPointer;
+  typedef typename InputImageType::Pointer      InputImagePointer;
+  typedef typename InputImageType::RegionType   InputImageRegionType; 
+  typedef typename InputImageType::PixelType    InputImagePixelType;
+  typedef typename InputImageType::SpacingType  InputImageSpacingType;
+  typedef typename InputImageType::SizeType     InputImageSizeType;
     
-    typedef TOutputImage                           OutputImageType;
-    typedef typename OutputImageType::ConstPointer OutputImageConstPointer;
-    typedef typename OutputImageType::Pointer      OutputImagePointer;
-    typedef typename OutputImageType::RegionType   OutputImageRegionType; 
-    typedef typename OutputImageType::PixelType    OutputImagePixelType;
-    typedef typename OutputImageType::SpacingType  OutputImageSpacingType;
-    typedef typename OutputImageType::SizeType     OutputImageSizeType;
+  typedef typename OutputImageType::ConstPointer OutputImageConstPointer;
+  typedef typename OutputImageType::Pointer      OutputImagePointer;
+  typedef typename OutputImageType::RegionType   OutputImageRegionType; 
+  typedef typename OutputImageType::PixelType    OutputImagePixelType;
+  typedef typename OutputImageType::SpacingType  OutputImageSpacingType;
+  typedef typename OutputImageType::SizeType     OutputImageSizeType;
     
-    typedef itk::AffineTransform<double, InputImageType::ImageDimension> TransformType;
-    typedef typename InputImageType::SpacingType                         GaussianSigmaType;
-
-    /** ImageDimension constants */
-    itkStaticConstMacro(InputImageDimension, unsigned int,
-                        TInputImage::ImageDimension);
-    itkStaticConstMacro(OutputImageDimension, unsigned int,
-                        TOutputImage::ImageDimension);
-    itkConceptMacro(SameDimensionCheck,
-                    (itk::Concept::SameDimension<InputImageDimension, OutputImageDimension>));
-
-    /** Interpolation types */
-    typedef enum {
-      NearestNeighbor = 0,
-      Linear = 1, 
-      BSpline = 2, 
-      B_LUT = 3,
-      WSINC
-    } InterpolationTypeEnumeration;
-
-    /** Input : image to resample */
-    void SetInput(const InputImageType * image);
+  typedef itk::AffineTransform<double, InputImageType::ImageDimension> TransformType;
+  typedef typename InputImageType::SpacingType                         GaussianSigmaType;
+
+  /** Interpolation types */
+  typedef enum {
+    NearestNeighbor = 0,
+    Linear = 1, 
+    BSpline = 2, 
+    B_LUT = 3,
+    WSINC = 4
+  } InterpolationTypeEnumeration;
+
+  /** ImageDimension constants */
+  itkStaticConstMacro(InputImageDimension, unsigned int,
+                     InputImageType::ImageDimension);
+  itkStaticConstMacro(OutputImageDimension, unsigned int,
+                     OutputImageType::ImageDimension);
+  itkConceptMacro(SameDimensionCheck,
+                 (itk::Concept::SameDimension<InputImageDimension, OutputImageDimension>));
+
+  /** Input : image to resample */
+  void SetInput(const InputImageType * image);
     
-    /** ImageDimension constants */
-    itkStaticConstMacro(ImageDimension, unsigned int, InputImageType::ImageDimension);
-
-    // Options
-    itkGetMacro(LastDimensionIsTime, bool);
-    itkSetMacro(LastDimensionIsTime, bool);
-    itkSetMacro(OutputIsoSpacing, double);
-    itkGetMacro(OutputIsoSpacing, double);
-    itkSetMacro(OutputSpacing, OutputImageSpacingType);
-    itkGetMacro(OutputSpacing, OutputImageSpacingType);
-    itkSetMacro(OutputSize, OutputImageSizeType);
-    itkGetMacro(OutputSize, OutputImageSizeType);
-    itkGetMacro(InterpolationType, InterpolationTypeEnumeration);
-    itkSetMacro(InterpolationType, InterpolationTypeEnumeration);    
-    itkGetMacro(GaussianFilteringEnabled, bool);
-    itkSetMacro(GaussianFilteringEnabled, bool);
-    itkGetMacro(BSplineOrder, int);
-    itkSetMacro(BSplineOrder, int);
-    itkGetMacro(BLUTSamplingFactor, int);
-    itkSetMacro(BLUTSamplingFactor, int);
-    itkGetMacro(Transform, typename TransformType::Pointer);
-    itkSetMacro(Transform, typename TransformType::Pointer);
-    itkGetMacro(GaussianSigma, GaussianSigmaType);
-    itkSetMacro(GaussianSigma, GaussianSigmaType);
-    itkGetMacro(DefaultPixelValue, OutputImagePixelType);
-    itkSetMacro(DefaultPixelValue, OutputImagePixelType);
-    itkGetMacro(VerboseOptions, bool);
-    itkSetMacro(VerboseOptions, bool);
+  /** ImageDimension constants */
+  itkStaticConstMacro(ImageDimension, unsigned int, InputImageType::ImageDimension);
+
+  // Options
+  itkGetMacro(LastDimensionIsTime, bool);
+  itkSetMacro(LastDimensionIsTime, bool);
+  itkSetMacro(OutputIsoSpacing, double);
+  itkGetMacro(OutputIsoSpacing, double);
+  itkSetMacro(OutputSpacing, OutputImageSpacingType);
+  itkGetMacro(OutputSpacing, OutputImageSpacingType);
+  itkSetMacro(OutputSize, OutputImageSizeType);
+  itkGetMacro(OutputSize, OutputImageSizeType);
+  itkGetMacro(InterpolationType, InterpolationTypeEnumeration);
+  itkSetMacro(InterpolationType, InterpolationTypeEnumeration);    
+  itkGetMacro(GaussianFilteringEnabled, bool);
+  itkSetMacro(GaussianFilteringEnabled, bool);
+  itkGetMacro(BSplineOrder, int);
+  itkSetMacro(BSplineOrder, int);
+  itkGetMacro(BLUTSamplingFactor, int);
+  itkSetMacro(BLUTSamplingFactor, int);
+  itkGetMacro(Transform, typename TransformType::Pointer);
+  itkSetMacro(Transform, typename TransformType::Pointer);
+  itkGetMacro(GaussianSigma, GaussianSigmaType);
+  itkSetMacro(GaussianSigma, GaussianSigmaType);
+  itkGetMacro(DefaultPixelValue, OutputImagePixelType);
+  itkSetMacro(DefaultPixelValue, OutputImagePixelType);
+  itkGetMacro(VerboseOptions, bool);
+  itkSetMacro(VerboseOptions, bool);
     
   protected:
-    ResampleImageWithOptionsFilter();
-    virtual ~ResampleImageWithOptionsFilter() {}
+  ResampleImageWithOptionsFilter();
+  virtual ~ResampleImageWithOptionsFilter() {}
     
-    bool m_LastDimensionIsTime;
-    double m_OutputIsoSpacing;
-    InterpolationTypeEnumeration m_InterpolationType;
-    bool m_GaussianFilteringEnabled;
-    int m_BSplineOrder;
-    int m_BLUTSamplingFactor;    
-    OutputImageSizeType m_OutputSize;
-    OutputImageSpacingType m_OutputSpacing;  
-    typename TransformType::Pointer m_Transform;
-    GaussianSigmaType m_GaussianSigma;
-    OutputImagePixelType m_DefaultPixelValue;
-    bool m_VerboseOptions;
-    OutputImageRegionType m_OutputRegion;
-
-    virtual void GenerateInputRequestedRegion();
-    virtual void GenerateOutputInformation();
-    virtual void GenerateData();
+  bool m_LastDimensionIsTime;
+  double m_OutputIsoSpacing;
+  InterpolationTypeEnumeration m_InterpolationType;
+  bool m_GaussianFilteringEnabled;
+  int m_BSplineOrder;
+  int m_BLUTSamplingFactor;    
+  OutputImageSizeType m_OutputSize;
+  OutputImageSpacingType m_OutputSpacing;  
+  typename TransformType::Pointer m_Transform;
+  GaussianSigmaType m_GaussianSigma;
+  OutputImagePixelType m_DefaultPixelValue;
+  bool m_VerboseOptions;
+  OutputImageRegionType m_OutputRegion;
+
+  virtual void GenerateInputRequestedRegion();
+  virtual void GenerateOutputInformation();
+  virtual void GenerateData();
     
   private:
-    ResampleImageWithOptionsFilter(const Self&); //purposely not implemented
-    void operator=(const Self&); //purposely not implemented
+  ResampleImageWithOptionsFilter(const Self&); //purposely not implemented
+  void operator=(const Self&); //purposely not implemented
     
   }; // end class
   //--------------------------------------------------------------------
 
+  // Convenient function 
+  template<class InputImageType>
+    typename InputImageType::Pointer ResampleImageSpacing(typename InputImageType::Pointer input, 
+                                                         typename InputImageType::SpacingType spacing, 
+                                                         int interpolationType=0);
+
 } // end namespace clitk
 //--------------------------------------------------------------------
 

diff --git a/itk/clitkResampleImageWithOptionsFilter.txx b/itk/clitkResampleImageWithOptionsFilter.txx
index aa09f7129812ce2cc3065e85925d5d09faac173f..beb85cc28adc45b01e48382c111281ef1ed0fe8c 100644 (file)
--- a/itk/clitkResampleImageWithOptionsFilter.txx
+++ b/itk/clitkResampleImageWithOptionsFilter.txx
@@ -35,9 +35,9 @@
 #include "itkCommand.h"
 
 //--------------------------------------------------------------------
-template <class TInputImage, class TOutputImage>
-clitk::ResampleImageWithOptionsFilter<TInputImage, TOutputImage>::
-ResampleImageWithOptionsFilter():itk::ImageToImageFilter<TInputImage, TOutputImage>() 
+template <class InputImageType, class OutputImageType>
+clitk::ResampleImageWithOptionsFilter<InputImageType, OutputImageType>::
+ResampleImageWithOptionsFilter():itk::ImageToImageFilter<InputImageType, OutputImageType>() 
 {
   static const unsigned int dim = InputImageType::ImageDimension;
   this->SetNumberOfRequiredInputs(1);
@@ -60,9 +60,9 @@ ResampleImageWithOptionsFilter():itk::ImageToImageFilter<TInputImage, TOutputIma
 
 
 //--------------------------------------------------------------------
-template <class TInputImage, class TOutputImage>
+template <class InputImageType, class OutputImageType>
 void
-clitk::ResampleImageWithOptionsFilter<TInputImage, TOutputImage>::
+clitk::ResampleImageWithOptionsFilter<InputImageType, OutputImageType>::
 SetInput(const InputImageType * image) 
 {
   // Process object is not const-correct so the const casting is required.
@@ -72,9 +72,9 @@ SetInput(const InputImageType * image)
 
 
 //--------------------------------------------------------------------
-template <class TInputImage, class TOutputImage>
+template <class InputImageType, class OutputImageType>
 void
-clitk::ResampleImageWithOptionsFilter<TInputImage, TOutputImage>::
+clitk::ResampleImageWithOptionsFilter<InputImageType, OutputImageType>::
 GenerateInputRequestedRegion() 
 {
   // call the superclass's implementation of this method
@@ -82,7 +82,7 @@ GenerateInputRequestedRegion()
 
   // get pointers to the input and output
   InputImagePointer  inputPtr  =
-    const_cast< TInputImage *>( this->GetInput() );
+    const_cast< InputImageType *>( this->GetInput() );
 
   // Request the entire input image
   InputImageRegionType inputRegion;
@@ -93,9 +93,9 @@ GenerateInputRequestedRegion()
 
 
 //--------------------------------------------------------------------
-template <class TInputImage, class TOutputImage>
+template <class InputImageType, class OutputImageType>
 void
-clitk::ResampleImageWithOptionsFilter<TInputImage, TOutputImage>::
+clitk::ResampleImageWithOptionsFilter<InputImageType, OutputImageType>::
 GenerateOutputInformation() 
 {
   static const unsigned int dim = InputImageType::ImageDimension;
@@ -178,9 +178,9 @@ GenerateOutputInformation()
 
 
 //--------------------------------------------------------------------
-template <class TInputImage, class TOutputImage>
+template <class InputImageType, class OutputImageType>
 void 
-clitk::ResampleImageWithOptionsFilter<TInputImage, TOutputImage>::
+clitk::ResampleImageWithOptionsFilter<InputImageType, OutputImageType>::
 GenerateData() 
 {
    
@@ -303,3 +303,30 @@ GenerateData()
   // DD("after Graft");
 }
 //--------------------------------------------------------------------
+
+
+//--------------------------------------------------------------------
+template<class InputImageType>
+typename InputImageType::Pointer 
+clitk::ResampleImageSpacing(typename InputImageType::Pointer input, 
+                            typename InputImageType::SpacingType spacing, 
+                            int interpolationType)
+{
+  typedef clitk::ResampleImageWithOptionsFilter<InputImageType> ResampleFilterType;
+  typename ResampleFilterType::Pointer resampler = ResampleFilterType::New();
+  resampler->SetInput(input);
+  resampler->SetOutputSpacing(spacing);
+  typename ResampleFilterType::InterpolationTypeEnumeration inter=ResampleFilterType::NearestNeighbor;
+  switch(interpolationType) {
+  case 0: inter = ResampleFilterType::NearestNeighbor; break;
+  case 1: inter = ResampleFilterType::Linear; break;
+  case 2: inter = ResampleFilterType::BSpline; break;
+  case 3: inter = ResampleFilterType::B_LUT; break;
+  case 4: inter = ResampleFilterType::WSINC; break;
+  }
+  resampler->SetInterpolationType(inter);
+  resampler->SetGaussianFilteringEnabled(true);
+  resampler->Update();
+  return resampler->GetOutput();
+}
+//--------------------------------------------------------------------