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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkDifferenceImageFilterTest.cxx
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#if defined(_MSC_VER)
#pragma warning ( disable : 4786 )
#endif
#include <iostream>
#include "itkImage.h"
#include "itkDifferenceImageFilter.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkSimpleFilterWatcher.h"
int itkDifferenceImageFilterTest(int argc, char *argv [] )
{
if( argc < 6 )
{
std::cerr << "Usage: " << std::endl;
std::cerr << argv[0];
std::cerr << " inputImageFile1 inputImageFile2 outputImage threshold radius" << std::endl;
return EXIT_FAILURE;
}
// Test using an unsigned integral pixel type and generate a signed
// integral pixel type
typedef signed short InputPixelType;
typedef unsigned short OutputPixelType;
const unsigned int Dimension = 2;
typedef itk::Image< InputPixelType, Dimension > InputImageType;
typedef itk::Image< OutputPixelType, Dimension > OutputImageType;
typedef itk::ImageFileReader< InputImageType > ReaderType;
ReaderType::Pointer reader1 = ReaderType::New();
ReaderType::Pointer reader2 = ReaderType::New();
reader1->SetFileName( argv[1] );
reader2->SetFileName( argv[2] );
// Define the filter
typedef itk::DifferenceImageFilter<
InputImageType,
OutputImageType > FilterType;
FilterType::Pointer filter = FilterType::New();
// setup the filter
filter->SetDifferenceThreshold( atoi( argv[4] ) );
filter->SetToleranceRadius( atoi( argv[5] ) );
itk::SimpleFilterWatcher watcher( filter, "Difference");
// wire the pipeline
filter->SetValidInput( reader1->GetOutput() );
filter->SetTestInput( reader2->GetOutput() );
// Write the output
typedef itk::ImageFileWriter< OutputImageType > WriterType;
WriterType::Pointer writer = WriterType::New();
writer->SetInput( filter->GetOutput() );
writer->SetFileName( argv[3] );
try
{
writer->Update();
}
catch( itk::ExceptionObject & excp )
{
std::cerr << "Exception : " << excp << std::endl;
return EXIT_FAILURE;
}
unsigned long numberOfPixelsWithDifferences =
filter->GetNumberOfPixelsWithDifferences();
std::cout << "Number of pixels with differences = ";
std::cout << numberOfPixelsWithDifferences << std::endl;
return EXIT_SUCCESS;
}
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