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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkSliceBySliceImageFilterTest.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 "itkSliceBySliceImageFilter.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkSimpleFilterWatcher.h"
#include "itkMedianImageFilter.h"
#include "itkCommand.h"
void sliceCallBack(itk::Object* object, const itk::EventObject &, void*)
{
// the same typedefs than in the main function - should be done in a nicer way
const int Dimension = 3;
typedef unsigned char PixelType;
typedef itk::Image< PixelType, Dimension > ImageType;
typedef itk::SliceBySliceImageFilter< ImageType, ImageType > FilterType;
typedef itk::MedianImageFilter< FilterType::InternalInputImageType,
FilterType::InternalOutputImageType > MedianType;
// real stuff begins here
// get the slice by slice filter and the median filter
FilterType * filter = dynamic_cast< FilterType * >( object );
MedianType * median = dynamic_cast< MedianType * >( filter->GetInputFilter() );
// std::cout << "callback! slice: " << filter->GetSliceIndex() << std::endl;
// set half of the slice number as radius
MedianType::InputSizeType radius;
radius.Fill( filter->GetSliceIndex() / 2 );
median->SetRadius( radius );
}
int itkSliceBySliceImageFilterTest(int argc, char * argv[])
{
if( argc != 3 )
{
std::cerr << "usage: " << argv[0] << " input output" << std::endl;
return EXIT_FAILURE;
}
const int Dimension = 3;
typedef unsigned char PixelType;
typedef itk::Image< PixelType, Dimension > ImageType;
typedef itk::ImageFileReader< ImageType > ReaderType;
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName( argv[1] );
typedef itk::SliceBySliceImageFilter< ImageType, ImageType > FilterType;
FilterType::Pointer filter = FilterType::New();
filter->SetInput( reader->GetOutput() );
typedef itk::MedianImageFilter< FilterType::InternalInputImageType,
FilterType::InternalOutputImageType > MedianType;
MedianType::Pointer median = MedianType::New();
filter->SetFilter( median );
itk::CStyleCommand::Pointer command = itk::CStyleCommand::New();
command->SetCallback( *sliceCallBack );
filter->AddObserver( itk::IterationEvent(), command );
itk::SimpleFilterWatcher watcher(filter, "filter");
typedef itk::ImageFileWriter< ImageType > WriterType;
WriterType::Pointer writer = WriterType::New();
writer->SetInput( filter->GetOutput() );
writer->SetFileName( argv[2] );
try
{
writer->Update();
}
catch( itk::ExceptionObject & excp )
{
std::cerr << excp << std::endl;
return EXIT_FAILURE;
}
//
// Exercise PrintSelf()
//
filter->Print( std::cout );
//
// Exercise exceptions
//
bool caughtException;
FilterType::Pointer badFilter = FilterType::New();
std::cout << "Testing with no filter set..." << std::endl;
badFilter->SetInput( reader->GetOutput() );
caughtException = false;
try
{
badFilter->Update();
}
catch( itk::ExceptionObject & excp )
{
std::cout << "Caught expected exception" << std::endl;
std::cout << excp << std::endl;
caughtException = true;
}
if (!caughtException)
{
return EXIT_FAILURE;
}
std::cout << "Testing with no output filter set..." << std::endl;
badFilter->SetInput( reader->GetOutput() );
badFilter->SetInputFilter( median );
caughtException = false;
try
{
badFilter->Update();
}
catch( itk::ExceptionObject & excp )
{
std::cout << "Caught expected exception" << std::endl;
std::cout << excp << std::endl;
caughtException = true;
}
if (!caughtException)
{
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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