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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkImageFileWriterPastingTest2.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
#ifdef __BORLANDC__
#define ITK_LEAN_AND_MEAN
#endif
#include <fstream>
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkDifferenceImageFilter.h"
#include "itkExtractImageFilter.h"
#include "itkPipelineMonitorImageFilter.h"
typedef unsigned char PixelType;
typedef itk::Image<PixelType,3> ImageType;
typedef ImageType::Pointer ImagePointer;
bool SameImage(ImagePointer testImage, ImagePointer baselineImage)
{
PixelType intensityTolerance = 0;
int radiusTolerance = 0;
unsigned long numberOfPixelTolerance = 0;
typedef itk::DifferenceImageFilter<ImageType,ImageType> DiffType;
DiffType::Pointer diff = DiffType::New();
diff->SetValidInput(baselineImage);
diff->SetTestInput(testImage);
diff->SetDifferenceThreshold( intensityTolerance );
diff->SetToleranceRadius( radiusTolerance );
diff->UpdateLargestPossibleRegion();
unsigned long status = diff->GetNumberOfPixelsWithDifferences();
if (status > numberOfPixelTolerance)
{
return false;
}
return true;
}
int itkImageFileWriterPastingTest2(int argc, char* argv[])
{
if( argc < 3 )
{
std::cerr << "Usage: " << argv[0] << " input output [existingFile]" << std::endl;
return EXIT_FAILURE;
}
// We remove the output file
if (argc == 3)
{
itksys::SystemTools::RemoveFile(argv[2]);
}
else
{
// copy this file to over write
itksys::SystemTools::CopyAFile(argv[3], argv[2]);
}
typedef itk::ImageFileReader<ImageType> ReaderType;
typedef itk::ImageFileWriter< ImageType > WriterType;
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName( argv[1] );
reader->SetUseStreaming( true );
// We decide how we want to read the image and we split accordingly
// The image is read slice by slice
reader->GenerateOutputInformation();
ImageType::RegionType largestRegion;
largestRegion = reader->GetOutput()->GetLargestPossibleRegion().GetSize();
ImageType::IndexType pasteIndex;
pasteIndex[0] = largestRegion.GetIndex()[0]+largestRegion.GetSize()[0]/3;
pasteIndex[1] = largestRegion.GetIndex()[1]+largestRegion.GetSize()[1]/3;
pasteIndex[2] = largestRegion.GetIndex()[2]+largestRegion.GetSize()[2]/3;
ImageType::SizeType pasteSize;
pasteSize[0] = largestRegion.GetSize()[0]/3;
pasteSize[1] = largestRegion.GetSize()[1]/3;
pasteSize[2] = largestRegion.GetSize()[2]/3;
ImageType::RegionType pasteRegion(pasteIndex, pasteSize);
typedef itk::PipelineMonitorImageFilter<ImageType> MonitorFilter;
MonitorFilter::Pointer monitor = MonitorFilter::New();
monitor->SetInput(reader->GetOutput());
// Setup the writer
WriterType::Pointer writer = WriterType::New();
writer->SetFileName(argv[2]);
writer->SetInput(monitor->GetOutput());
// create a vaild region from the largest
itk::ImageIORegion ioregion(3);
itk::ImageIORegion::IndexType index;
index.push_back(pasteIndex[0]);
index.push_back(pasteIndex[1]);
index.push_back(pasteIndex[2]);
ioregion.SetIndex(index);
itk::ImageIORegion::SizeType size;
size.push_back(pasteSize[0]);
size.push_back(pasteSize[1]);
size.push_back(pasteSize[2]);
ioregion.SetSize(size);
writer->SetIORegion(ioregion);
try
{
writer->Update();
}
catch( itk::ExceptionObject & err )
{
std::cerr << "ExceptionObject caught !" << std::endl;
std::cerr << err << std::endl;
if (argc > 3)
{
return EXIT_SUCCESS;
}
return EXIT_FAILURE;
}
//check that the pipeline executed as expected
if (monitor->GetNumberOfUpdates() != 1)
{
std::cerr << "pipeline did not execute as expected" << std::endl;
std::cout << monitor;
return EXIT_FAILURE;
}
typedef itk::ExtractImageFilter<ImageType, ImageType> ExtractImageFilterType;
ExtractImageFilterType::Pointer extractBaselineImage = ExtractImageFilterType::New();
extractBaselineImage->SetInput(reader->GetOutput());
extractBaselineImage->SetExtractionRegion(pasteRegion);
ReaderType::Pointer readerTestImage = ReaderType::New();
readerTestImage->SetFileName( argv[2] );
ExtractImageFilterType::Pointer extractTestImage = ExtractImageFilterType::New();
extractTestImage->SetInput(readerTestImage->GetOutput());
extractTestImage->SetExtractionRegion(pasteRegion);
if (!SameImage(extractTestImage->GetOutput(), extractBaselineImage->GetOutput()))
{
std::cerr << "input paste and output paste regions don't match!\n";
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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