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/*=========================================================================
*
* 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 "itkImageFileReader.h"
#include "itkOtsuMultipleThresholdsImageFilter.h"
#include "itkRescaleIntensityImageFilter.h"
#include "itkImageFileWriter.h"
#include "itkFilterWatcher.h"
int itkOtsuMultipleThresholdsImageFilterTest(int argc, char* argv[] )
{
if( argc < 6 )
{
std::cerr << "Usage: " << argv[0];
std::cerr << " inputImageFile outputImageFile";
std::cerr << " numberOfHistogramBins";
std::cerr << " numberOfThresholds";
std::cerr << " labelOffset";
std::cerr << " [valleyEmphasis]";
std::cerr << std::endl;
return EXIT_FAILURE;
}
typedef short InputPixelType;
typedef unsigned short InternalPixelType;
typedef unsigned char OutputPixelType;
typedef itk::Image< InputPixelType, 2 > InputImageType;
typedef itk::Image< InternalPixelType, 2> InternalImageType;
typedef itk::Image< OutputPixelType, 2 > OutputImageType;
typedef itk::ImageFileReader< InputImageType > ReaderType;
typedef itk::OtsuMultipleThresholdsImageFilter< InputImageType, InternalImageType > FilterType;
typedef itk::RescaleIntensityImageFilter< InternalImageType, OutputImageType > RescaleType;
typedef itk::ImageFileWriter< OutputImageType > WriterType;
ReaderType::Pointer reader = ReaderType::New();
FilterType::Pointer filter = FilterType::New();
RescaleType::Pointer rescaler = RescaleType::New();
WriterType::Pointer writer = WriterType::New();
FilterWatcher watcher(filter);
// Set up the reader
reader->SetFileName( argv[1] );
// Set up the filter parameters.
filter->SetInput( reader->GetOutput() );
filter->SetNumberOfHistogramBins (atoi(argv[3]));
filter->SetNumberOfThresholds( atoi(argv[4]) );
filter->SetLabelOffset( atoi(argv[5]) );
if( argc > 6 )
{
filter->SetValleyEmphasis(atoi(argv[6]));
}
try
{
filter->Update();
}
catch( itk::ExceptionObject & excep )
{
std::cerr << "Exception caught !" << std::endl;
std::cerr << excep << std::endl;
return EXIT_FAILURE;
}
// Test GetMacros
unsigned long numberOfHistogramBins = filter->GetNumberOfHistogramBins();
std::cout << "filter->GetNumberOfHistogramBins(): "
<< numberOfHistogramBins
<< std::endl;
unsigned long numberOfThresholds = filter->GetNumberOfThresholds();
std::cout << "filter->GetNumberOfThresholds(): "
<< numberOfThresholds
<< std::endl;
OutputPixelType labelOffset = filter->GetLabelOffset();
std::cout << "filter->GetLabelOffset(): "
<< static_cast<itk::NumericTraits<OutputPixelType>::PrintType>( labelOffset )
<< std::endl;
FilterType::ThresholdVectorType thresholds = filter->GetThresholds();
std::cout << "filter->GetThresholds(): ";
for (unsigned int i = 0; i < thresholds.size(); i++)
{
std::cout << itk::NumericTraits<FilterType::InputPixelType>::PrintType(thresholds[i]) << " ";
}
std::cout << std::endl;
// Rescale the image so that it can be seen. The output of the
// filter contains labels that are numbered sequentially, so the
// image looks nearly uniform unless there are a large number of labels.
rescaler->SetInput( filter->GetOutput() );
rescaler->SetOutputMinimum(0);
rescaler->SetOutputMaximum(255);
// Write out the test image
writer->SetFileName( argv[2] );
writer->SetInput( rescaler->GetOutput() );
try
{
writer->Update();
}
catch( itk::ExceptionObject & excep )
{
std::cerr << "Exception caught !" << std::endl;
std::cerr << excep << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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