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
130
131
132
133
134
135
|
/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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 itkAreaOpeningImageFilter_h
#define itkAreaOpeningImageFilter_h
#include "itkAttributeMorphologyBaseImageFilter.h"
#include <functional>
namespace itk
{
/**
* \class AreaOpeningImageFilter
* \brief Morphological opening by attributes
*
* An attribute opening removes blobs according to criteria
* such as area. When applied to grayscale images they have the effect of
* trimming peaks (regions brighter than their surroundings)
* based on area while leaving the rest of the image
* unchanged.
*
* This code was contributed in the Insight Journal paper
*
* "Grayscale morphological attribute operations"
* by Beare R.
* https://www.insight-journal.org/browse/publication/203
*
*
* \author Richard Beare. Department of Medicine, Monash University, Melbourne, Australia.
*
* \ingroup ITKReview
*/
template <typename TInputImage,
typename TOutputImage,
typename TAttribute = typename TInputImage::SpacingType::ValueType>
class AreaOpeningImageFilter
: public AttributeMorphologyBaseImageFilter<TInputImage,
TOutputImage,
TAttribute,
std::greater<typename TInputImage::PixelType>>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(AreaOpeningImageFilter);
using Self = AreaOpeningImageFilter;
using Superclass = AttributeMorphologyBaseImageFilter<TInputImage,
TOutputImage,
TAttribute,
std::greater<typename TInputImage::PixelType>>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/**
* Extract some information from the image types. Dimensionality
* of the two images is assumed to be the same.
*/
using OutputPixelType = typename TOutputImage::PixelType;
using OutputInternalPixelType = typename TOutputImage::InternalPixelType;
using InputPixelType = typename TInputImage::PixelType;
using InputInternalPixelType = typename TInputImage::InternalPixelType;
using IndexType = typename TInputImage::IndexType;
using OffsetType = typename TInputImage::OffsetType;
using SizeType = typename TInputImage::SizeType;
using AttributeType = TAttribute;
static constexpr unsigned int ImageDimension = TOutputImage::ImageDimension;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(AreaOpeningImageFilter);
/**
* Set/Get whether the image spacing is used or not - defaults to true.
*/
itkSetMacro(UseImageSpacing, bool);
itkGetConstReferenceMacro(UseImageSpacing, bool);
itkBooleanMacro(UseImageSpacing);
protected:
AreaOpeningImageFilter() { m_UseImageSpacing = true; }
~AreaOpeningImageFilter() override = default;
void
GenerateData() override
{
this->m_AttributeValuePerPixel = 1;
if (m_UseImageSpacing)
{
const auto & spacing = this->GetInput()->GetSpacing();
// compute pixel size
double psize = 1.0;
for (unsigned int i = 0; i < ImageDimension; ++i)
{
psize *= spacing[i];
}
this->m_AttributeValuePerPixel = static_cast<AttributeType>(psize);
// std::cout << "m_AttributeValuePerPixel: " <<
// this->m_AttributeValuePerPixel << std::endl;
// and call superclass implementation of GenerateData()
}
Superclass::GenerateData();
}
void
PrintSelf(std::ostream & os, Indent indent) const override
{
Superclass::PrintSelf(os, indent);
os << indent << "UseImageSpacing: " << (m_UseImageSpacing ? "On" : "Off") << std::endl;
}
private:
bool m_UseImageSpacing{};
};
} // namespace itk
#endif
|
