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
|
/*=========================================================================
*
* 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 "itkFFTConvolutionImageFilter.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkLandweberDeconvolutionImageFilter.h"
#include "itkDeconvolutionIterationCommand.h"
#include "itkSimpleFilterWatcher.h"
#include "itkMacro.h"
#include "itkMath.h"
int itkLandweberDeconvolutionImageFilterTest(int argc, char* argv[])
{
if ( argc < 5 )
{
std::cerr << "Usage: " << argv[0]
<< " <input image> <kernel image> <output image> <iterations> [convolution image]"
<< std::endl;
return EXIT_FAILURE;
}
typedef float PixelType;
const unsigned int Dimension = 2;
typedef itk::Image< PixelType, Dimension > ImageType;
typedef itk::ImageFileReader< ImageType > ReaderType;
typedef itk::ImageFileWriter< ImageType > WriterType;
ReaderType::Pointer inputReader = ReaderType::New();
inputReader->SetFileName( argv[1] );
inputReader->Update();
ReaderType::Pointer kernelReader = ReaderType::New();
kernelReader->SetFileName( argv[2] );
kernelReader->Update();
// Generate a convolution of the input image with the kernel image
typedef itk::FFTConvolutionImageFilter< ImageType > ConvolutionFilterType;
ConvolutionFilterType::Pointer convolutionFilter = ConvolutionFilterType::New();
convolutionFilter->SetInput( inputReader->GetOutput() );
convolutionFilter->NormalizeOn();
convolutionFilter->SetKernelImage( kernelReader->GetOutput() );
// Test the deconvolution algorithm
typedef itk::LandweberDeconvolutionImageFilter< ImageType > DeconvolutionFilterType;
DeconvolutionFilterType::Pointer deconvolutionFilter = DeconvolutionFilterType::New();
deconvolutionFilter->SetInput( convolutionFilter->GetOutput() );
deconvolutionFilter->SetKernelImage( kernelReader->GetOutput() );
deconvolutionFilter->NormalizeOn();
deconvolutionFilter->SetAlpha( atof( argv[5] ) );
if ( itk::Math::NotExactlyEquals(deconvolutionFilter->GetAlpha(), atof( argv[5] )) )
{
std::cerr << "Set/GetAlpha() test failed." << std::endl;
return EXIT_FAILURE;
}
unsigned int iterations = static_cast< unsigned int >( atoi( argv[4] ) );
deconvolutionFilter->SetNumberOfIterations( iterations );
// Add an observer to report on filter iteration progress
typedef itk::DeconvolutionIterationCommand< DeconvolutionFilterType > IterationCommandType;
IterationCommandType::Pointer observer = IterationCommandType::New();
deconvolutionFilter->AddObserver( itk::IterationEvent(), observer );
itk::SimpleFilterWatcher watcher(deconvolutionFilter);
// Write the deconvolution result
try
{
WriterType::Pointer writer = WriterType::New();
writer->SetFileName( argv[3] );
writer->SetInput( deconvolutionFilter->GetOutput() );
writer->Update();
}
catch ( itk::ExceptionObject & e )
{
std::cerr << "Unexpected exception caught when writing deconvolution image: "
<< e << std::endl;
return EXIT_FAILURE;
}
if ( !observer->GetInvoked() )
{
std::cerr << "Iteration command observer was never invoked, but should have been." << std::endl;
return EXIT_FAILURE;
}
deconvolutionFilter->Print( std::cout );
// Instantiate types with non-default template parameters
typedef itk::Image< float, Dimension > FloatImageType;
typedef itk::Image< double, Dimension > DoubleImageType;
typedef itk::Image< int, Dimension > IntImageType;
typedef itk::LandweberDeconvolutionImageFilter< FloatImageType,
DoubleImageType,
IntImageType,
float > FilterType;
FilterType::Pointer filter = FilterType::New();
filter->Print( std::cout );
return EXIT_SUCCESS;
}
|
