ITK  4.4.0
Insight Segmentation and Registration Toolkit
itkNearestNeighborInterpolateImageFunction.h
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1 /*=========================================================================
2  *
3  * Copyright Insight Software Consortium
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0.txt
10  *
11  * Unless required by applicable law or agreed to in writing, software
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13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
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16  *
17  *=========================================================================*/
18 #ifndef __itkNearestNeighborInterpolateImageFunction_h
19 #define __itkNearestNeighborInterpolateImageFunction_h
20 
22 
23 namespace itk
24 {
37 template< class TInputImage, class TCoordRep = double >
39  public InterpolateImageFunction< TInputImage, TCoordRep >
40 {
41 public:
47 
51 
53  itkNewMacro(Self);
54 
56  typedef typename Superclass::OutputType OutputType;
57 
59  typedef typename Superclass::InputImageType InputImageType;
60 
62  itkStaticConstMacro(ImageDimension, unsigned int, Superclass::ImageDimension);
63 
65  typedef typename Superclass::IndexType IndexType;
66 
68  typedef typename Superclass::ContinuousIndexType ContinuousIndexType;
69 
78  virtual OutputType EvaluateAtContinuousIndex(
79  const ContinuousIndexType & index) const
80  {
81  IndexType nindex;
82 
83  this->ConvertContinuousIndexToNearestIndex(index, nindex);
84  return static_cast< OutputType >( this->GetInputImage()->GetPixel(nindex) );
85  }
86 
87 protected:
90  void PrintSelf(std::ostream & os, Indent indent) const
91  { Superclass::PrintSelf(os, indent); }
92 
93 private:
94  NearestNeighborInterpolateImageFunction(const Self &); //purposely not
95  // implemented
96  void operator=(const Self &); //purposely not
97 
98  // implemented
99 };
100 } // end namespace itk
101 
102 #endif
103