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
136
137
138
139
140
141
|
/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkEdgePotentialImageFilterTest.cxx
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#if defined(_MSC_VER)
#pragma warning ( disable : 4786 )
#endif
#include "itkEdgePotentialImageFilter.h"
#include "itkImage.h"
#include "itkCovariantVector.h"
#include "itkImageRegionIterator.h"
#include "itkFilterWatcher.h"
int itkEdgePotentialImageFilterTest(int, char* [] )
{
// Define the dimension of the images
const unsigned int ImageDimension = 3;
// Declare the types of the images
typedef itk::CovariantVector<double,ImageDimension> VectorType;
typedef itk::Image<VectorType, ImageDimension> InputImageType;
typedef itk::Image<float, ImageDimension> OutputImageType;
// Declare Iterator types apropriated for each image
typedef itk::ImageRegionIterator<InputImageType> InputIteratorType;
typedef itk::ImageRegionIterator<OutputImageType> OutputIteratorType;
// Declare the type of the index to access images
typedef itk::Index<ImageDimension> IndexType;
// Declare the type of the size
typedef itk::Size<ImageDimension> SizeType;
// Declare the type of the Region
typedef itk::ImageRegion<ImageDimension> RegionType;
// Create two images
InputImageType::Pointer inputImage = InputImageType::New();
// Define their size, and start index
SizeType size;
size[0] = 2;
size[1] = 2;
size[2] = 2;
IndexType start;
start[0] = 0;
start[1] = 0;
start[2] = 0;
RegionType region;
region.SetIndex( start );
region.SetSize( size );
// Initialize input image
inputImage->SetLargestPossibleRegion( region );
inputImage->SetBufferedRegion( region );
inputImage->SetRequestedRegion( region );
inputImage->Allocate();
// Create one iterator for the Input Image.
InputIteratorType it( inputImage, inputImage->GetBufferedRegion() );
// Initialize the content input image
VectorType vec;
for ( unsigned int j = 0; j < ImageDimension; j++ )
{
vec[j] = 10.0;
}
std::cout << "Content of the Input " << std::endl;
it.GoToBegin();
while( !it.IsAtEnd() )
{
it.Set( vec );
std::cout << it.Get() << std::endl;
++it;
}
// create an EdgePotentialImageFilter
typedef itk::EdgePotentialImageFilter< InputImageType,
OutputImageType > FilterType;
FilterType::Pointer filter = FilterType::New();
FilterWatcher watcher(filter);
// Connect the input images
filter->SetInput( inputImage );
// Get the Smart Pointer to the Filter Output
OutputImageType::Pointer outputImage = filter->GetOutput();
// Execute the filter
filter->Update();
filter->SetFunctor(filter->GetFunctor());
// Create an iterator for going through the image output
OutputIteratorType ot(outputImage, outputImage->GetRequestedRegion());
// Check the content of the result image
std::cout << "Verification of the output " << std::endl;
const OutputImageType::PixelType epsilon = 1e-6;
ot.GoToBegin();
it.GoToBegin();
while( !ot.IsAtEnd() )
{
const InputImageType::PixelType input = it.Get();
const OutputImageType::PixelType output = ot.Get();
const OutputImageType::PixelType pot = vcl_exp( -1.0 * (it.Get().GetNorm() ) );
std::cout << ot.Get() << " = ";
std::cout << pot << std::endl;
if( vcl_fabs( pot - output ) > epsilon )
{
std::cerr << "Error in itkEdgePotentialImageFilterTest " << std::endl;
std::cerr << " potential( " << input << ") = " << pot << std::endl;
std::cerr << " differs from " << output;
std::cerr << " by more than " << epsilon << std::endl;
return EXIT_FAILURE;
}
++ot;
++it;
}
return EXIT_SUCCESS;
}
|
