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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/*=========================================================================
*
* 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.
*
*=========================================================================*/
#include "itkFlipImageFilter.h"
#include "itkTextOutput.h"
#include "itkFilterWatcher.h"
#include "itkImageRegionIteratorWithIndex.h"
#include "itkTestingMacros.h"
int itkFlipImageFilterTest( int argc, char* argv[] )
{
if( argc != 2 )
{
std::cerr << "Missing parameters." << std::endl;
std::cerr << "Usage: " << argv[0] << " FlipAboutOrigin" << std::endl;
return EXIT_FAILURE;
}
itk::OutputWindow::SetInstance(itk::TextOutput::New());
const unsigned int ImageDimension = 3;
typedef unsigned char PixelType;
typedef itk::Image< PixelType, ImageDimension > ImageType;
typedef itk::FlipImageFilter< ImageType > FlipperType;
// Define a small input image
ImageType::IndexType index = {{ 10, 20, 30 }};
ImageType::SizeType size = {{ 5, 4, 3 }};
ImageType::RegionType region;
region.SetSize( size );
region.SetIndex( index );
ImageType::SpacingType spacing;
spacing[0] = 1.1;
spacing[1] = 1.2;
spacing[2] = 1.3;
ImageType::PointType origin;
origin[0] = 0.5;
origin[1] = 0.4;
origin[2] = 0.3;
ImageType::Pointer inputImage = ImageType::New();
inputImage->SetLargestPossibleRegion( region );
inputImage->SetBufferedRegion( region );
inputImage->Allocate();
inputImage->SetSpacing( spacing );
inputImage->SetOrigin( origin );
typedef itk::ImageRegionIteratorWithIndex< ImageType > IteratorType;
IteratorType inputIter( inputImage, inputImage->GetBufferedRegion() );
PixelType counter = 0;
while( !inputIter.IsAtEnd() )
{
inputIter.Set( counter );
++counter;
++inputIter;
}
// Flip the image
FlipperType::Pointer flipper = FlipperType::New();
EXERCISE_BASIC_OBJECT_METHODS( flipper, FlipImageFilter, ImageToImageFilter );
FilterWatcher watcher( flipper, "FlipImageFilter" );
bool bArray[ImageDimension] = { true, false, true };
FlipperType::FlipAxesArrayType flipAxes( bArray );
flipper->SetFlipAxes( flipAxes );
TEST_SET_GET_VALUE( flipAxes, flipper->GetFlipAxes() );
bool flipAboutOrigin = static_cast< bool >( atoi( argv[1] ) );
TEST_SET_GET_BOOLEAN( flipper, FlipAboutOrigin, flipAboutOrigin );
flipper->SetInput( inputImage );
flipper->Update();
// Check the output
ImageType::Pointer outputImage = flipper->GetOutput();
const ImageType::SpacingType& inputSpacing = inputImage->GetSpacing();
const ImageType::PointType& inputOrigin = inputImage->GetOrigin();
const ImageType::SpacingType& outputSpacing = outputImage->GetSpacing();
const ImageType::PointType& outputOrigin = outputImage->GetOrigin();
typedef ImageType::IndexType IndexType;
typedef IndexType::IndexValueType IndexValueType;
inputIter.GoToBegin();
bool passed = true;
while( !inputIter.IsAtEnd() )
{
IndexType inputIndex = inputIter.GetIndex();
IndexType outputIndex;
for( unsigned int j = 0; j < ImageDimension; j++ )
{
if( flipAxes[j] )
{
int sign = flipAboutOrigin ? -1 : 1;
ImageType::PointType::ValueType temp = sign * (
static_cast<double>( inputIndex[j] ) * inputSpacing[j] + inputOrigin[j] );
ImageType::PointType::ValueType outputPoint = flipAboutOrigin ?
temp - outputOrigin[j] : outputOrigin[j] - temp;
outputIndex[j] = itk::Math::Round< IndexValueType >( outputPoint / outputSpacing[j] );
}
else
{
outputIndex[j] = inputIndex[j];
}
}
if( inputIter.Get() != outputImage->GetPixel( outputIndex ) )
{
passed = false;
std::cout << "Mismatch at index: in: " << inputIndex;
std::cout << "; out: " << outputIndex << std::endl;
std::cout << "Expected pixel value: "
<< itk::NumericTraits< IteratorType::PixelType >::PrintType( inputIter.Get() )
<< ", but got: "
<< itk::NumericTraits< IteratorType::PixelType >::PrintType(
outputImage->GetPixel( outputIndex ) ) << std::endl;
}
++inputIter;
}
if( !passed )
{
std::cout << "Test failed!" << std::endl;
return EXIT_FAILURE;
}
std::cout << "Test finished." << std::endl;
return EXIT_SUCCESS;
}
|
