ITK  4.9.0
Insight Segmentation and Registration Toolkit
itkSqrtImageFilter.h
Go to the documentation of this file.
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
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
15  * limitations under the License.
16  *
17  *=========================================================================*/
18 #ifndef itkSqrtImageFilter_h
19 #define itkSqrtImageFilter_h
20 
22 #include "vnl/vnl_math.h"
23 
24 namespace itk
25 {
26 namespace Functor
27 {
33 template< typename TInput, typename TOutput >
34 class Sqrt
35 {
36 public:
37  Sqrt() {}
38  ~Sqrt() {}
39  bool operator!=(const Sqrt &) const
40  {
41  return false;
42  }
44 
45  bool operator==(const Sqrt & other) const
46  {
47  return !( *this != other );
48  }
49 
50  inline TOutput operator()(const TInput & A) const
51  {
52  return (TOutput)std::sqrt( (double)A );
53  }
54 };
55 }
65 template< typename TInputImage, typename TOutputImage >
67  public
68  UnaryFunctorImageFilter< TInputImage, TOutputImage,
69  Functor::Sqrt< typename TInputImage::PixelType,
70  typename TOutputImage::PixelType > >
71 {
72 public:
76  TInputImage, TOutputImage,
77  Functor::Sqrt< typename TInputImage::PixelType,
78  typename TOutputImage::PixelType > > Superclass;
79 
82 
84  itkNewMacro(Self);
85 
87  itkTypeMacro(SqrtImageFilter,
89 
90 #ifdef ITK_USE_CONCEPT_CHECKING
91  // Begin concept checking
92  itkConceptMacro( InputConvertibleToDoubleCheck,
94  itkConceptMacro( DoubleConvertibleToOutputCheck,
96  // End concept checking
97 #endif
98 
99 protected:
101  virtual ~SqrtImageFilter() {}
102 
103 private:
104  SqrtImageFilter(const Self &) ITK_DELETE_FUNCTION;
105  void operator=(const Self &) ITK_DELETE_FUNCTION;
106 };
107 } // end namespace itk
108 
109 #endif
UnaryFunctorImageFilter< TInputImage, TOutputImage, Functor::Sqrt< typename TInputImage::PixelType, typename TOutputImage::PixelType > > Superclass
SmartPointer< Self > Pointer
Computes the square root of each pixel.
bool operator==(const Sqrt &other) const
Base class for all process objects that output image data.
TOutput operator()(const TInput &A) const
SmartPointer< const Self > ConstPointer
Implements pixel-wise generic operation on one image.
bool operator!=(const Sqrt &) const
#define itkConceptMacro(name, concept)