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itkNearestNeighborInterpolateImageFunction.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkNearestNeighborInterpolateImageFunction.h,v $
00005   Language:  C++
00006   Date:      $Date: 2009-02-06 20:53:10 $
00007   Version:   $Revision: 1.14 $
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 __itkNearestNeighborInterpolateImageFunction_h
00018 #define __itkNearestNeighborInterpolateImageFunction_h
00019 
00020 #include "itkInterpolateImageFunction.h"
00021 
00022 namespace itk
00023 {
00024 
00036 template <class TInputImage, class TCoordRep = double>
00037 class ITK_EXPORT NearestNeighborInterpolateImageFunction : 
00038   public InterpolateImageFunction<TInputImage,TCoordRep> 
00039 {
00040 public:
00042   typedef NearestNeighborInterpolateImageFunction         Self;
00043   typedef InterpolateImageFunction<TInputImage,TCoordRep> Superclass;
00044   typedef SmartPointer<Self>                              Pointer;
00045   typedef SmartPointer<const Self>                        ConstPointer;
00046 
00048   itkTypeMacro(NearestNeighborInterpolateImageFunction, 
00049     InterpolateImageFunction);
00050 
00052   itkNewMacro(Self);  
00053 
00055   typedef typename Superclass::OutputType OutputType;
00056 
00058   typedef typename Superclass::InputImageType InputImageType;
00059 
00061   itkStaticConstMacro(ImageDimension, unsigned int,Superclass::ImageDimension);
00062 
00064   typedef typename Superclass::IndexType IndexType;
00065 
00067   typedef typename Superclass::ContinuousIndexType ContinuousIndexType;
00068 
00077   virtual OutputType EvaluateAtContinuousIndex( 
00078     const ContinuousIndexType & index ) const
00079     {
00080     IndexType nindex;
00081     this->ConvertContinuousIndexToNearestIndex(index, nindex);
00082     return static_cast<OutputType>( this->GetInputImage()->GetPixel( nindex ) );
00083     }
00085 
00086 protected:
00087   NearestNeighborInterpolateImageFunction(){};
00088   ~NearestNeighborInterpolateImageFunction(){};
00089   void PrintSelf(std::ostream& os, Indent indent) const
00090    { Superclass::PrintSelf( os, indent ); }
00091 
00092 private:
00093   NearestNeighborInterpolateImageFunction(const Self&); //purposely not implemented
00094   void operator=(const Self&); //purposely not implemented
00095 
00096 };
00097 
00098 } // end namespace itk
00099 
00100 #endif
00101 

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