ITK  4.2.0
Insight Segmentation and Registration Toolkit
itkMaximumImageFilter.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
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9  * http://www.apache.org/licenses/LICENSE-2.0.txt
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11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
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 __itkMaximumImageFilter_h
19 #define __itkMaximumImageFilter_h
20 
22 
23 namespace itk
24 {
25 namespace Functor
26 {
32 template< class TInput1, class TInput2 = TInput1, class TOutput = TInput1 >
33 class Maximum
34 {
35 public:
36  Maximum() {}
37  ~Maximum() {}
38  bool operator!=(const Maximum &) const
39  {
40  return false;
41  }
43 
44  bool operator==(const Maximum & other) const
45  {
46  return !( *this != other );
47  }
48 
49  inline TOutput operator()(const TInput1 & A, const TInput2 & B) const
50  {
51  if ( A > B )
52  {
53  return static_cast< TOutput >( A );
54  }
55  else
56  {
57  return static_cast< TOutput >( B );
58  }
59  }
60 };
61 }
80 template< class TInputImage1, class TInputImage2 = TInputImage1, class TOutputImage = TInputImage1 >
81 class ITK_EXPORT MaximumImageFilter:
82  public
83  BinaryFunctorImageFilter< TInputImage1, TInputImage2, TOutputImage,
84  Functor::Maximum<
85  typename TInputImage1::PixelType,
86  typename TInputImage2::PixelType,
87  typename TOutputImage::PixelType > >
88 {
89 public:
92  typedef BinaryFunctorImageFilter< TInputImage1, TInputImage2, TOutputImage,
94  typename TInputImage1::PixelType,
95  typename TInputImage2::PixelType,
96  typename TOutputImage::PixelType >
98 
101 
103  itkNewMacro(Self);
104 
106  itkTypeMacro(MaximumImageFilter,
108 
109 #ifdef ITK_USE_CONCEPT_CHECKING
110 
111  itkConceptMacro( Input1ConvertibleToOutputCheck,
112  ( Concept::Convertible< typename TInputImage1::PixelType,
113  typename TOutputImage::PixelType > ) );
114  itkConceptMacro( Input2ConvertibleToOutputCheck,
115  ( Concept::Convertible< typename TInputImage2::PixelType,
116  typename TOutputImage::PixelType > ) );
117  itkConceptMacro( Input1GreaterThanInput2Check,
118  ( Concept::GreaterThanComparable< typename TInputImage1::PixelType,
119  typename TInputImage2::PixelType > ) );
120 
122 #endif
123 protected:
125  virtual ~MaximumImageFilter() {}
126 private:
127  MaximumImageFilter(const Self &); //purposely not implemented
128  void operator=(const Self &); //purposely not implemented
129 };
130 } // end namespace itk
132 
133 #endif
134