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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkNearestNeighborInterpolateImageFunction.h.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:42 $ |
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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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#ifndef _itkNearestNeighborInterpolateImageFunction_h |
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#define _itkNearestNeighborInterpolateImageFunction_h |
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#include "itkInterpolateImageFunction.h" |
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namespace itk |
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{ |
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/** \class NearestNeighborInterpolateImageFunction |
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* \brief Nearest neighbor interpolation of a scalar image. |
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* |
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* NearestNeighborInterpolateImageFunction interpolates image intensity at |
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* a non-integer pixel position by copying the intensity for the nearest |
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* neighbor. This class is templated |
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* over the input image type and the coordinate representation type |
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* (e.g. float or double). |
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* |
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* \ingroup ImageFunctions ImageInterpolators |
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*/ |
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template <class TInputImage, class TCoordRep = float> |
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class ITK_EXPORT NearestNeighborInterpolateImageFunction : |
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**public InterpolateImageFunction<TInputImage,TCoordRep> |
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{ |
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public: |
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/** Standard class typedefs. */ |
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typedef NearestNeighborInterpolateImageFunction Self; |
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TDA |
typedef InterpolateImageFunction<TInputImage,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(NearestNeighborInterpolateImageFunction, |
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InterpolateImageFunction); |
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/** Method for creation through the object factory. */ |
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itkNewMacro(Self); |
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/** OutputType typedef support. */ |
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typedef typename Superclass::OutputType OutputType; |
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/** InputImageType typedef support. */ |
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typedef typename Superclass::InputImageType InputImageType; |
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/** Dimension underlying input image. */ |
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itkStaticConstMacro(ImageDimension, unsigned int,Superclass::ImageDimension); |
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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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/** Evaluate the function at a ContinuousIndex position |
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* |
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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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* |
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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 |
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**{ |
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***IndexType nindex; |
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***this->ConvertContinuousIndexToNearestIndex(index, nindex); |
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***return static_cast<OutputType>( this->GetInputImage()->GetPixel( nindex ) ); |
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**} |
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protected: |
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NearestNeighborInterpolateImageFunction(){}; |
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~NearestNeighborInterpolateImageFunction(){}; |
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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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NearestNeighborInterpolateImageFunction(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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