[Insight-users] Bug in OtsuThresholdImageFilter?

[Roman Grothausmann]

Dear mailing list members,


GetThreshold() from OtsuThresholdImageFilter in the code below does not 
return any value. Is that a bug?

Any help is very much appreciated
Roman


________________________________________

#include <itkImageFileReader.h>
#include <itkImageFileWriter.h>

#include <itkOtsuThresholdImageFilter.h>
#include "itkFilterWatcher2.h"

int main( int argc, char * argv[] )
     {
     if( argc != 4 )
         {
         std::cerr << "Usage: " << argv[0];
         std::cerr << " inputImage";
         std::cerr << " outputImage";
         std::cerr << " #_of_hist-bins";
         std::cerr << std::endl;
         return EXIT_FAILURE;
         }

     typedef  unsigned char InputPixelType;
     typedef  unsigned char OutputPixelType;

     const unsigned int Dimension = 3;

     typedef itk::Image<InputPixelType,  Dimension>   InputImageType;
     typedef itk::Image<OutputPixelType,  Dimension>   OutputImageType;

     typedef itk::ImageFileReader<InputImageType>  ReaderType;
     typedef itk::ImageFileWriter<OutputImageType>  WriterType;
     WriterType::Pointer writer = WriterType::New();

     ReaderType::Pointer reader = ReaderType::New();
     reader->SetFileName(argv[1]);

     typedef itk::OtsuThresholdImageFilter<InputImageType, 
OutputImageType> FilterType;
     FilterType::Pointer filter = FilterType::New();


     filter->SetNumberOfHistogramBins(atoi(argv[3]));

     filter->SetInput(reader->GetOutput());
     FilterWatcher watcher(filter, "filter");
     filter->Update();

     std::cout << "Threshold: " << filter->GetThreshold() << std::endl;

     writer->SetFileName(argv[2]);
     writer->SetInput(filter->GetOutput());
     writer->Update();

     return EXIT_SUCCESS;
     }




-- 
Roman Grothausmann

Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
Bereich Funktionale Materialien
Institut für angewandte Materialforschung
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