ITK  4.2.0
Insight Segmentation and Registration Toolkit
itkExtractImageFilterRegionCopier.h
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18 /*=========================================================================
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22  * Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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28 #ifndef __itkExtractImageFilterRegionCopier_h
29 #define __itkExtractImageFilterRegionCopier_h
30 
32 
33 namespace itk
34 {
35 namespace ImageToImageFilterDetail
36 {
40 template< unsigned int T1, unsigned int T2 >
41 void ExtractImageFilterCopyRegion(const typename
43  ImageRegion< T1 > & destRegion,
44  const ImageRegion< T2 > & srcRegion,
45  const ImageRegion< T1 > &)
46 {
47  ImageToImageFilterDefaultCopyRegion< T1, T2 >(firstEqualsSecond, destRegion, srcRegion);
48 }
49 
53 template< unsigned int T1, unsigned int T2 >
54 void ExtractImageFilterCopyRegion(const typename
56  ImageRegion< T1 > & destRegion,
57  const ImageRegion< T2 > & srcRegion,
58  const ImageRegion< T1 > & totalInputExtractionRegion)
59 {
60  (void) totalInputExtractionRegion;
61  ImageToImageFilterDefaultCopyRegion< T1, T2 >(firstLessThanSecond, destRegion, srcRegion);
62 }
64 
81 template< unsigned int T1, unsigned int T2 >
82 void ExtractImageFilterCopyRegion(const typename
84  ImageRegion< T1 > & destRegion,
85  const ImageRegion< T2 > & srcRegion,
86  const ImageRegion< T1 > & totalInputExtractionRegion)
87 {
88  // Source dimension is less than the destination dimension, so look
89  // at the m_TotalExtractionRegion and see what values in size are 0.
90  // With these values, lock the destRegion.Index to the corresponding index
91  unsigned int dim;
92 
93  Index< T1 > destIndex;
94  Size< T1 > destSize;
95  const Index< T2 > & srcIndex = srcRegion.GetIndex();
96  const Size< T2 > & srcSize = srcRegion.GetSize();
97  int count = 0;
98  for ( dim = 0; dim < T1; ++dim )
99  {
100  //for dimensions to be removed
101  if ( !totalInputExtractionRegion.GetSize()[dim] )
102  {
103  destIndex[dim] = totalInputExtractionRegion.GetIndex()[dim];
104  destSize[dim] = 1;
105  }
106  //for all other dimension
107  else
108  {
109  destIndex[dim] = srcIndex[count];
110  destSize[dim] = srcSize[count];
111  count++;
112  }
113  }
114  destRegion.SetIndex(destIndex);
115  destRegion.SetSize(destSize);
116 }
117 
139 template< unsigned int T1, unsigned int T2 >
141  public ImageRegionCopier< T1, T2 >
142 {
143 public:
144  virtual void operator()(ImageRegion< T1 > & destRegion,
145  const ImageRegion< T2 > & srcRegion,
146  const ImageRegion< T1 > & totalInputExtractionRegion) const
147  {
148  typedef typename BinaryUnsignedIntDispatch< T1, T2 >::ComparisonType ComparisonType;
149  ExtractImageFilterCopyRegion< T1, T2 >(ComparisonType(),
150  destRegion, srcRegion, totalInputExtractionRegion);
151  }
152 
154  virtual void operator()(ImageRegion< T1 > & destRegion,
155  const ImageRegion< T2 > & srcRegion) const
156  {
157  ImageRegionCopier< T1, T2 >::operator()(destRegion, srcRegion);
158  }
159 };
160 } //end namespace ImageToImageFilterDetail
161 } //end namespace itk
163 
164 #endif
165