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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkVectorInterpolateImageFunction.h.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:49 $ |
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Version: $Revision: 1.4 $ |
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Copyright (c) Insight Software Consortium. All rights reserved. |
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See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details. |
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This software is distributed WITHOUT ANY WARRANTY; without even |
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
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PURPOSE. See the above copyright notices for more information. |
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=========================================================================*/ |
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DEF |
#ifndef _itkVectorInterpolateImageFunction_h |
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DEF |
#define _itkVectorInterpolateImageFunction_h |
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#include "itkImageFunction.h" |
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#include "itkFixedArray.h" |
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namespace itk |
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{ |
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/** |
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* Due to a bug in MSVC, an enum value cannot be accessed out of a template |
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* parameter until the template class opens. In order for templated classes |
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* to access the dimension of a template parameter in defining their |
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* own dimension, this class is needed as a work-around. |
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*/ |
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template <typename T> |
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struct GetDimension |
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{ |
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itkStaticConstMacro(Dimension, int, T::Dimension); |
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}; |
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/** \class VectorInterpolateImageFunction |
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* \brief Base class for all vector image interpolaters. |
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* |
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* VectorInterpolateImageFunction is the base for all ImageFunctions that |
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* interpolates image with vector pixel types. This function outputs |
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* a return value of type Vector<double,Dimension>. |
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* |
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* This class is templated input image type and the coordinate |
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* representation type. |
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* |
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* \warning This hierarchy of functions work only for images |
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* with Vector-based pixel types. For scalar images use |
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* InterpolateImageFunction. |
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* |
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* \sa InterpolateImageFunction |
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* \ingroup ImageFunctions ImageInterpolators |
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*/ |
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template < |
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class TInputImage, |
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class TCoordRep = float, |
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class TPixelType = ITK_TYPENAME TInputImage::PixelType |
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> |
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class ITK_EXPORT VectorInterpolateImageFunction : |
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**public ImageFunction< |
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TInputImage, |
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FixedArray< ITK_TYPENAME NumericTraits<typename TPixelType::ValueType>::RealType, |
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******::itk::GetDimension<TPixelType>::Dimension>, |
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****TCoordRep > |
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{ |
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public: |
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/** Extract the vector dimension from the pixel template parameter. */ |
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itkStaticConstMacro(Dimension, unsigned int, |
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TPixelType::Dimension); |
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/** Dimension underlying input image. */ |
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itkStaticConstMacro(ImageDimension, unsigned int, |
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TInputImage::ImageDimension); |
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/** Standard class typedefs. */ |
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typedef VectorInterpolateImageFunction Self; |
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typedef ImageFunction<TInputImage, |
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FixedArray<double, itkGetStaticConstMacro(Dimension)>, TCoordRep > Superclass; |
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TDA |
typedef SmartPointer<Self> Pointer; |
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typedef SmartPointer<const Self> ConstPointer; |
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/** Run-time type information (and related methods). */ |
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itkTypeMacro(VectorInterpolateImageFunction, ImageFunction); |
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/** InputImageType typedef support. */ |
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typedef typename Superclass::InputImageType InputImageType; |
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typedef typename InputImageType::PixelType PixelType; |
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typedef typename PixelType::ValueType ValueType; |
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typedef typename NumericTraits<ValueType>::RealType RealType; |
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/** Point typedef support. */ |
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typedef typename Superclass::PointType PointType; |
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/** Index typedef support. */ |
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typedef typename Superclass::IndexType IndexType; |
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/** ContinuousIndex typedef support. */ |
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typedef typename Superclass::ContinuousIndexType ContinuousIndexType; |
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/** Output type is FixedArray<RealType,Dimension>. */ |
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typedef typename Superclass::OutputType OutputType; |
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/** CoordRep typedef support. */ |
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typedef TCoordRep CoordRepType; |
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/** Returns the interpolated image intensity at a |
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* specified point position. No bounds checking is done. |
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* The point is assume to lie within the image buffer. |
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* ImageFunction::IsInsideBuffer() can be used to check bounds before |
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* calling the method. */ |
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virtual OutputType Evaluate( const PointType& point ) const |
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{ |
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ContinuousIndexType index; |
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this->GetInputImage()->TransformPhysicalPointToContinuousIndex( point, index ); |
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return ( this->EvaluateAtContinuousIndex( index ) ); |
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} |
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/** Interpolate the image at a continuous index position |
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* |
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* Returns the interpolated image intensity at a |
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* specified index position. No bounds checking is done. |
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* The point is assume to lie within the image buffer. |
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* |
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* Subclasses must override this method. |
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* |
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* ImageFunction::IsInsideBuffer() can be used to check bounds before |
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* calling the method. */ |
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virtual OutputType EvaluateAtContinuousIndex( |
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const ContinuousIndexType & index ) const = 0; |
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/** Interpolate the image at an index position. |
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* Simply returns the image value at the |
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* specified index position. No bounds checking is done. |
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* The point is assume to lie within the image buffer. |
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* |
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* ImageFunction::IsInsideBuffer() can be used to check bounds before |
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* calling the method. */ |
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virtual OutputType EvaluateAtIndex( const IndexType & index ) const |
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{ |
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OutputType output; |
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PixelType input = this->GetInputImage()->GetPixel( index ); |
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for( unsigned int k = 0; k < Dimension; k++ ) |
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{ |
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output[k] = static_cast<double>( input[k] ); |
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} |
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return ( output ); |
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} |
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protected: |
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VectorInterpolateImageFunction() {} |
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~VectorInterpolateImageFunction() {} |
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void PrintSelf(std::ostream& os, Indent indent) const |
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{ Superclass::PrintSelf( os, indent ); } |
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private: |
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VectorInterpolateImageFunction(const Self&); //purposely not implemented |
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void operator=(const Self&); //purposely not implemented |
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}; |
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} // namespace itk |
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#endif |
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EOF |
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EOF,EML |
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