1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef itkMedianImageFunction_h
#define itkMedianImageFunction_h
#include "itkImageFunction.h"
#include "itkNumericTraits.h"
namespace itk
{
/**
* \class MedianImageFunction
* \brief Calculate the median value in the neighborhood of a pixel
*
* Calculate the median pixel value over the standard 8, 26, etc. connected
* neighborhood. This calculation uses a ZeroFluxNeumannBoundaryCondition.
*
* If called with a ContinuousIndex or Point, the calculation is performed
* at the nearest neighbor.
*
* This class is templated over the input image type and the
* coordinate representation type (e.g. float or double ).
*
* \ingroup ImageFunctions
* \ingroup ITKImageFunction
*
* \wiki
* \wikiexample{Functions/MedianImageFunction,Compute the median of an image at a pixels (in a regular neighborhood)}
* \endwiki
*/
template< typename TInputImage, typename TCoordRep = float >
class ITK_TEMPLATE_EXPORT MedianImageFunction:
public ImageFunction< TInputImage, typename TInputImage::PixelType,
TCoordRep >
{
public:
/** Standard class typedefs. */
typedef MedianImageFunction Self;
typedef ImageFunction< TInputImage, typename TInputImage::PixelType,
TCoordRep > Superclass;
typedef SmartPointer< Self > Pointer;
typedef SmartPointer< const Self > ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro(MedianImageFunction, ImageFunction);
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** InputImageType typedef support. */
typedef TInputImage InputImageType;
typedef typename Superclass::InputPixelType InputPixelType;
/** OutputType typedef support. */
typedef typename Superclass::OutputType OutputType;
/** Index typedef support. */
typedef typename Superclass::IndexType IndexType;
/** ContinuousIndex typedef support. */
typedef typename Superclass::ContinuousIndexType ContinuousIndexType;
/** Point typedef support. */
typedef typename Superclass::PointType PointType;
/** Dimension of the underlying image. */
itkStaticConstMacro(ImageDimension, unsigned int,
InputImageType::ImageDimension);
/** Evalulate the function at specified index */
virtual OutputType EvaluateAtIndex(const IndexType & index) const ITK_OVERRIDE;
/** Evaluate the function at non-integer positions */
virtual OutputType Evaluate(const PointType & point) const ITK_OVERRIDE
{
IndexType index;
this->ConvertPointToNearestIndex(point, index);
return this->EvaluateAtIndex(index);
}
virtual OutputType EvaluateAtContinuousIndex(
const ContinuousIndexType & cindex) const ITK_OVERRIDE
{
IndexType index;
this->ConvertContinuousIndexToNearestIndex(cindex, index);
return this->EvaluateAtIndex(index);
}
/** Get/Set the radius of the neighborhood over which the
statistics are evaluated */
itkSetMacro( NeighborhoodRadius, unsigned int );
itkGetConstReferenceMacro( NeighborhoodRadius, unsigned int );
protected:
MedianImageFunction();
~MedianImageFunction() ITK_OVERRIDE {}
void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
private:
ITK_DISALLOW_COPY_AND_ASSIGN(MedianImageFunction);
unsigned int m_NeighborhoodRadius;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkMedianImageFunction.hxx"
#endif
#endif
|
