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<div class="moz-cite-prefix">Hi,<br>
<br>
try to add reader->Update() after reader->SetFileName().
Otherwise you don't know whether your image could successfully be
read.<br>
<br>
Christina Rossmanith<br>
--<br>
<span
style="font-size:10pt;font-family:"Arial","sans-serif""
lang="EN-GB">Dept. of Neurology</span> <br>
<span
style="font-size:10pt;font-family:"Arial","sans-serif""
lang="EN-GB">University Medical Center Mannheim</span><br>
<br>
Am 21.08.2012 10:59, schrieb D, Yamini:<br>
</div>
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<p class="MsoNormal">Hi,</p>
<p class="MsoNormal">I am trying to run a program for erosion,
after building the project, I run the same in cmd window. I
find its failing at “ writer-> update();” line.</p>
<p class="MsoNormal">The following is the code and the error
displayed .</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas; color:blue">#include</span><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:#A31515">"stdafx.h"</span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas; color:blue">#include</span><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:#A31515">"itkImage.h"</span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas; color:blue">#include</span><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:#A31515">"itkImageFileReader.h"</span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas; color:blue">#include</span><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:#A31515">"itkImageFileWriter.h"</span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas; color:blue">#include</span><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:#A31515">"itkBinaryErodeImageFilter.h"</span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas; color:blue">#include</span><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:#A31515">"itkBinaryBallStructuringElement.h"</span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> </span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas; color:blue">int</span><span
style="font-size:9.5pt; font-family:Consolas"> main(
<span style="color:blue">int</span> argc, <span
style="color:blue">char</span>* argv[] )</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">{</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:blue">if</span>( argc < 4 )</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> {</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> std::cerr
<<
<span style="color:#A31515">"Usage: "</span> <<
std::endl;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> std::cerr
<< argv[0] <<
<span style="color:#A31515">" inputImage outputImage radius"</span>;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> std::cerr
<< std::endl;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:blue">return</span> EXIT_FAILURE;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> }</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:blue">typedef</span> <span
style="color:blue">unsigned</span> <span
style="color:blue">
char</span> PixelType;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:blue">const</span> <span
style="color:blue">unsigned</span> <span
style="color:blue">
int</span> Dimension = 2;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> </span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:blue">typedef</span> itk::Image<
PixelType, Dimension > ImageType;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:blue">typedef</span>
itk::ImageFileReader< ImageType > ReaderType;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
ReaderType::Pointer reader = ReaderType::New();</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
reader->SetFileName( argv[1] );</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> </span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
std::cout<<<span style="color:#A31515">"reader passed"</span><<std::endl;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> </span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:blue">typedef</span>
itk::BinaryBallStructuringElement< PixelType, Dimension
></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
StructuringElementType;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
StructuringElementType structuringElement;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
structuringElement.SetRadius( atoi( argv[3] ) );</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
structuringElement.CreateStructuringElement();</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> </span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:blue">typedef</span>
itk::BinaryErodeImageFilter< ImageType, ImageType,</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> </span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> </span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
StructuringElementType > BinaryErodeImageFilterType;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> </span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
BinaryErodeImageFilterType::Pointer dilateFilter =</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
BinaryErodeImageFilterType::New();</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
dilateFilter->SetInput( reader->GetOutput() );</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
dilateFilter->SetKernel( structuringElement );</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> </span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
std::cout<<<span style="color:#A31515">"filter passed"</span><<std::endl;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> </span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> </span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:blue">typedef</span>
itk::ImageFileWriter< ImageType > WriterType;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
WriterType::Pointer writer = WriterType::New();</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
writer->SetInput( dilateFilter->GetOutput() );</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
writer->SetFileName( argv[2] );</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> </span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
std::cout<<<span style="color:#A31515">"writer passed"</span><<std::endl;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> </span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> </span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:blue">try</span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> {</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
writer->Update();</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
std::cout<<<span style="color:#A31515">"writer update
passed"</span><<std::endl;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> }</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:blue">catch</span>( itk::ExceptionObject
)</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> {</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> std::cerr
<<
<span style="color:#A31515">"Error: "</span> <<
std::endl;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:blue">return</span> EXIT_FAILURE;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> }</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas"> </span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">
<span style="color:blue">return</span> EXIT_SUCCESS;</span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.5pt; font-family:Consolas">}</span></p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">"C:\Users\Documents\Visual Studio
2010\Projects\myNew\Debug\Yam.exe" d:\gray.jpg d:\output.jpg
2</p>
<p class="MsoNormal">reader passed</p>
<p class="MsoNormal">filter passed</p>
<p class="MsoNormal">writer passed</p>
<p class="MsoNormal">Error:</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Thank you,</p>
<p class="MsoNormal">Yamini.D</p>
<p class="MsoNormal"> </p>
</div>
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