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
160
161
162
163
164
165
|
/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkStreamingImageFilterTest.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 <iostream>
#include "itkImage.h"
#include "itkImageRegionIterator.h"
#include "itkShrinkImageFilter.h"
#include "itkStreamingImageFilter.h"
#include "../IO/itkPipelineMonitorImageFilter.h"
int itkStreamingImageFilterTest(int, char* [] )
{
const unsigned int numberOfStreamDivisions = 4;
// typedefs to simplify the syntax
typedef itk::Image<short, 2> ShortImage;
// Test the creation of an image with native type
ShortImage::Pointer if2 = ShortImage::New();
// fill in an image
ShortImage::IndexType index = {{0, 0}};
ShortImage::SizeType size = {{80, 122}};
ShortImage::RegionType region;
region.SetSize( size );
region.SetIndex( index );
if2->SetLargestPossibleRegion( region );
if2->SetBufferedRegion( region );
if2->Allocate();
itk::ImageRegionIterator<ShortImage> iterator(if2, region);
short i=0;
short scalar;
for (; !iterator.IsAtEnd(); ++iterator, ++i)
{
scalar = i;
iterator.Set( scalar );
}
// Create a filter
itk::ShrinkImageFilter< ShortImage, ShortImage >::Pointer shrink;
shrink = itk::ShrinkImageFilter< ShortImage, ShortImage >::New();
shrink->SetInput( if2 );
unsigned int factors[2] = { 3, 5 };
shrink->SetShrinkFactors(factors);
// shrink->DebugOn();
// monitor what's going on
itk::PipelineMonitorImageFilter<ShortImage>::Pointer monitor;
monitor = itk::PipelineMonitorImageFilter<ShortImage>::New();
monitor->SetInput( shrink->GetOutput() );
itk::StreamingImageFilter<ShortImage, ShortImage>::Pointer streamer;
streamer = itk::StreamingImageFilter<ShortImage, ShortImage>::New();
streamer->SetInput( monitor->GetOutput() );
streamer->SetNumberOfStreamDivisions( numberOfStreamDivisions );
streamer->Update();
std::cout << "Input spacing: " << if2->GetSpacing()[0] << ", "
<< if2->GetSpacing()[1] << std::endl;
std::cout << "Output spacing: " << streamer->GetOutput()->GetSpacing()[0]
<< ", "
<< streamer->GetOutput()->GetSpacing()[1] << std::endl;
// Test itkGetConstReferenceMacro and itkGetObjectMacro
const unsigned int & value = streamer->GetNumberOfStreamDivisions();
std::cout << "streamer->GetNumberOfStreamDivisions(): " << value << std::endl;
streamer->GetRegionSplitter();
//SplitterType * streamer->GetRegionSplitter();
// check if the pipeline executed as expected
if (monitor->GetNumberOfUpdates() != value ||
monitor->GetOutputRequestedRegions().size() != value)
{
std::cout << monitor;
std::cout << "ImageStreaming Filter test failed because pipeline didn't execute as expected." << std::endl;
return EXIT_FAILURE;
}
//
// The rest of this code determines whether the shrink code produced
// the image we expected.
//
ShortImage::RegionType requestedRegion;
requestedRegion = streamer->GetOutput()->GetRequestedRegion();
itk::ImageRegionIterator<ShortImage>
iterator2(streamer->GetOutput(), requestedRegion);
std::cout << "requestedRegion: " << requestedRegion;
// If size is not a multiple of the shrink factors, then adjust the
// row/col indicies
short rowOffset = 0;
short colOffset = 0;
if (region.GetSize()[1] % shrink->GetShrinkFactors()[1])
{
rowOffset = static_cast<short>(
region.GetSize()[1] / 2.0 -
((region.GetSize()[1] / shrink->GetShrinkFactors()[1]) / 2.0 *
shrink->GetShrinkFactors()[1])
);
}
if (region.GetSize()[0] % shrink->GetShrinkFactors()[0])
{
colOffset = static_cast<short>(
region.GetSize()[0] / 2.0 -
((region.GetSize()[0] / shrink->GetShrinkFactors()[0]) / 2.0 *
shrink->GetShrinkFactors()[0])
);
}
bool passed = true;
for (; !iterator2.IsAtEnd(); ++iterator2)
{
short col = (shrink->GetShrinkFactors()[0] * iterator2.GetIndex()[0] +
(shrink->GetShrinkFactors()[0] - 1) / 2);
col += colOffset;
short row = (shrink->GetShrinkFactors()[1] * iterator2.GetIndex()[1] +
(shrink->GetShrinkFactors()[1] - 1) / 2);
row += rowOffset;
short trueValue = col + region.GetSize()[0] * row;
if ( iterator2.Get() != trueValue )
{
passed = false;
std::cout << "Pixel " << iterator2.GetIndex()
<< " expected " << trueValue
<< " but got " << iterator2.Get()
<< std::endl;
}
}
if (passed)
{
std::cout << "ImageStreamingFilter test passed." << std::endl;
return EXIT_SUCCESS;
}
else
{
std::cout << "ImageStreaming Filter test failed." << std::endl;
return EXIT_FAILURE;
}
}
|
