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
|
/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkShrinkImageStreamingTest.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 "itkFileOutputWindow.h"
#include "../IO/itkPipelineMonitorImageFilter.h"
#include "itkStreamingImageFilter.h"
int itkShrinkImageStreamingTest(int, char* [] )
{
const unsigned int numberOfStreamDivisions = 4;
// typedefs to simplify the syntax
typedef itk::Image<short, 2> ShortImage;
ShortImage::Pointer sourceImage = ShortImage::New();
typedef itk::PipelineMonitorImageFilter<ShortImage> MonitorFilter;
// fill in an image
ShortImage::IndexType index = {{100, 100}};
ShortImage::SizeType size = {{8, 12}};
ShortImage::RegionType region;
region.SetSize( size );
region.SetIndex( index );
sourceImage->SetRegions( region );
sourceImage->Allocate();
itk::ImageRegionIterator<ShortImage> iterator(sourceImage, region);
short i=0;
for (; !iterator.IsAtEnd(); ++iterator, ++i)
{
iterator.Set( i );
}
MonitorFilter::Pointer monitor1 = MonitorFilter::New();
monitor1->SetInput( sourceImage );
// Create a filter, shrink by 2,3
itk::ShrinkImageFilter< ShortImage, ShortImage >::Pointer shrink;
shrink = itk::ShrinkImageFilter< ShortImage, ShortImage >::New();
shrink->SetInput( monitor1->GetOutput() );
unsigned int factors[2] = { 2, 3 };
shrink->SetShrinkFactors(factors);
MonitorFilter::Pointer monitor2 = MonitorFilter::New();
monitor2->SetInput(shrink->GetOutput());
itk::StreamingImageFilter<ShortImage, ShortImage>::Pointer streamer;
streamer = itk::StreamingImageFilter<ShortImage, ShortImage>::New();
streamer->SetInput( monitor2->GetOutput() );
streamer->SetNumberOfStreamDivisions( numberOfStreamDivisions );
streamer->Update();
// this verifies that the pipeline was executed as expected allong
// with correct region propagation and output information
if (!monitor2->VerifyAllInputCanStream(4))
{
std::cout << "Filter failed to execute as expected!" << std::endl;
std::cout << monitor2;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
|
