<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman,new york,times,serif;font-size:12pt"><div>Hello All,<br><br>  Here's a simple program to test the read/write classes in ITK.  It works fine in Release mode (windows 7, VS 2008), but fails in Debug mode with read Access violation.<br>I did not using cmake for thhis program, but externally linked it to ITK libs. I suspect that the writer is experiencing a race condition. since I am not familiar with the internals of ITK (multi-threading etc...), I would appreciate if some one knowledgeable of ITK tries out the following program. <br><br>Thank you,<br>Emma<br><br><br><br>#include "itkBinaryThresholdImageFilter.h"<br><br>#include "itkImage.h"<br>#include "itkImageFileReader.h"<br>#include "itkImageFileWriter.h"<br><br>int main( int argc, char * argv[] )<br>{<br>  if( argc < 7 )<br>   
 {<br>    std::cerr << "Usage: " << argv[0];<br>    std::cerr << " inputImageFile outputImageFile ";  <br>    std::cerr << " lowerThreshold upperThreshold ";  <br>    std::cerr << " outsideValue insideValue   "  << std::endl;  <br>    return EXIT_FAILURE;<br>    }<br>  <br> <br>  typedef  unsigned char  InputPixelType;<br>  typedef  unsigned char  OutputPixelType;<br>  <br>  typedef itk::Image< InputPixelType,  2 >   InputImageType;<br>  typedef itk::Image< OutputPixelType, 2 >   OutputImageType;<br> <br>  typedef itk::BinaryThresholdImageFilter<<br>               InputImageType, OutputImageType > 
 FilterType;<br> <br>  typedef itk::ImageFileReader< InputImageType >  ReaderType;<br>  <br>  typedef itk::ImageFileWriter< OutputImageType >  WriterType;<br>  <br>  ReaderType::Pointer reader = ReaderType::New();<br>  FilterType::Pointer filter = FilterType::New();<br><br>  WriterType::Pointer writer = WriterType::New();<br>  writer->SetInput( filter->GetOutput() );<br>  reader->SetFileName( argv[1] );<br> <br>  filter->SetInput( reader->GetOutput() );<br><br>  const OutputPixelType outsideValue = atoi( argv[5] );<br>  const OutputPixelType insideValue  = atoi( argv[6] );<br><br>  filter->SetOutsideValue( outsideValue );<br>  filter->SetInsideValue(  insideValue  );<br> <br><br>  const InputPixelType lowerThreshold = atoi( argv[3] );<br>  const InputPixelType upperThreshold = atoi( argv[4]
 );<br><br>  filter->SetLowerThreshold( lowerThreshold );<br>  filter->SetUpperThreshold( upperThreshold );<br> <br>  filter->Update();<br>  writer->SetFileName( argv[2] );<br>  writer->Update();<br><br>  return EXIT_SUCCESS;<br>}<br><br><br></div>
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