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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 "itkImageFileWriter.h"
#include "itkRescaleIntensityImageFilter.h"
#include "itkGDCMImageIO.h"
#include "itkMetaDataObject.h"
#define SPECIFIC_IMAGEIO_MODULE_TEST
int itkGDCMImageIOTest(int argc, char* argv[])
{
if(argc < 6)
{
std::cerr << "Usage: " << argv[0] << " DicomImage OutputDicomImage OutputImage RescaledDicomImage RescaledOutputImage\n";
return EXIT_FAILURE;
}
const char * dicomImageFileName = argv[1];
const char * outputDicomFileName = argv[2];
const char * outputImageFileName = argv[3];
const char * rescaledDicomFileName = argv[4];
const char * rescaledOutputImageFileName = argv[5];
const unsigned int Dimension = 2;
typedef short InputPixelType;
typedef itk::Image< InputPixelType, Dimension > InputImageType;
typedef itk::GDCMImageIO ImageIOType;
ImageIOType::Pointer gdcmImageIO = ImageIOType::New();
typedef itk::ImageFileReader< InputImageType > ReaderType;
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName( dicomImageFileName );
reader->SetImageIO( gdcmImageIO );
try
{
reader->Update();
}
catch( itk::ExceptionObject & error )
{
std::cerr << "Error: exception in file reader " << std::endl;
std::cerr << error << std::endl;
return EXIT_FAILURE;
}
// Exercise the get methods
std::cout << "InternalComponentType: "
<< gdcmImageIO->GetInternalComponentType() << std::endl;
std::cout << "RescaleSlope: "
<< gdcmImageIO->GetRescaleSlope() << std::endl;
std::cout << "RescaleIntercept: "
<< gdcmImageIO->GetRescaleIntercept() << std::endl;
std::cout << "UIDPrefix: "
<< gdcmImageIO->GetUIDPrefix() << std::endl;
std::cout << "StudyInstanceUID: "
<< gdcmImageIO->GetStudyInstanceUID() << std::endl;
std::cout << "SeriesInstanceUID: "
<< gdcmImageIO->GetSeriesInstanceUID() << std::endl;
std::cout << "FrameOfReferenceInstanceUID: "
<< gdcmImageIO->GetFrameOfReferenceInstanceUID() << std::endl;
std::cout << "KeepOriginalUID: "
<< gdcmImageIO->GetKeepOriginalUID() << std::endl;
std::cout << "LoadPrivateTags: "
<< gdcmImageIO->GetLoadPrivateTags() << std::endl;
std::cout << "CompressionType: "
<< gdcmImageIO->GetCompressionType() << std::endl;
// Test itk::GDCMImageIO::GetValueFromTag with upper and lower case tagkeys
std::string tagkeyLower = "0008|103e"; // Series Description
std::string valueFromLower;
gdcmImageIO->GetValueFromTag(tagkeyLower, valueFromLower);
std::string tagkeyUpper = "0008|103E"; // Series Description
std::string valueFromUpper;
gdcmImageIO->GetValueFromTag(tagkeyUpper, valueFromUpper);
// We can't easily verify the content of the tag value against a known
// baseline, as this test is run multiple times with different input images
if(valueFromLower != valueFromUpper)
{
std::cerr << "itk::GDCMImageIO::GetValueFromTag produces different values for upper and lowercase tags" << std::endl;
return EXIT_FAILURE;
}
// Rewrite the image in DICOM format
typedef itk::ImageFileWriter< InputImageType > DicomWriterType;
DicomWriterType::Pointer dicomWriter = DicomWriterType::New();
dicomWriter->SetFileName( outputDicomFileName );
dicomWriter->SetInput( reader->GetOutput() );
dicomWriter->UseInputMetaDataDictionaryOff();
dicomWriter->SetImageIO( gdcmImageIO );
try
{
dicomWriter->Update();
}
catch( itk::ExceptionObject & error )
{
std::cerr << "Error: exception in file writer " << std::endl;
std::cerr << error << std::endl;
return EXIT_FAILURE;
}
typedef itk::ImageFileReader< InputImageType > GeneratedDicomReaderType;
GeneratedDicomReaderType::Pointer generatedDicomReader = GeneratedDicomReaderType::New();
generatedDicomReader->SetFileName( outputDicomFileName );
typedef itk::ImageFileWriter< InputImageType > MetaWriterType;
MetaWriterType::Pointer metaWriter = MetaWriterType::New();
metaWriter->SetFileName( outputImageFileName );
metaWriter->SetInput( generatedDicomReader->GetOutput() );
try
{
metaWriter->Update();
}
catch( itk::ExceptionObject & error )
{
std::cerr << "Error: exception in file writer " << std::endl;
std::cerr << error << std::endl;
return EXIT_FAILURE;
}
// Rescale intensities and rewrite the image in another format
//
typedef unsigned char RescaledPixelType;
typedef itk::Image< RescaledPixelType, Dimension > RescaledImageType;
typedef itk::RescaleIntensityImageFilter<
InputImageType, RescaledImageType > RescaleFilterType;
RescaleFilterType::Pointer rescaler = RescaleFilterType::New();
rescaler->SetOutputMinimum( 0 );
rescaler->SetOutputMaximum( 255 );
rescaler->SetInput( reader->GetOutput() );
// Rewrite the image in DICOM format but using less bits per pixel
//
typedef itk::ImageFileWriter< RescaledImageType > RescaledDicomWriterType;
RescaledDicomWriterType::Pointer rescaledDicomWriter = RescaledDicomWriterType::New();
rescaledDicomWriter->SetFileName( rescaledDicomFileName );
rescaledDicomWriter->SetInput( rescaler->GetOutput() );
rescaledDicomWriter->UseInputMetaDataDictionaryOff();
itk::MetaDataDictionary & dict = gdcmImageIO->GetMetaDataDictionary();
std::ostringstream ostrm;
ostrm << itk::Math::Round< int, double >( -1. * rescaler->GetShift() );
itk::EncapsulateMetaData< std::string >( dict, "0028|1052", ostrm.str() );
ostrm.str( "" );
ostrm << itk::Math::Ceil< int, double >( 1. / rescaler->GetScale() );
itk::EncapsulateMetaData< std::string >( dict, "0028|1053", ostrm.str() );
gdcmImageIO->SetInternalComponentType( itk::ImageIOBase::UCHAR );
rescaledDicomWriter->SetImageIO( gdcmImageIO );
gdcmImageIO->Print( std::cout );
try
{
rescaledDicomWriter->Update();
}
catch( itk::ExceptionObject & error )
{
std::cerr << "Error: exception in file writer " << std::endl;
std::cerr << error << std::endl;
return EXIT_FAILURE;
}
typedef itk::ImageFileReader< RescaledImageType > GeneratedRescaledDicomReaderType;
GeneratedRescaledDicomReaderType::Pointer rescaledDicomReader = GeneratedRescaledDicomReaderType::New();
rescaledDicomReader->SetFileName( rescaledDicomFileName );
typedef itk::ImageFileWriter< RescaledImageType > RescaledMetaWriterType;
RescaledMetaWriterType::Pointer rescaledMetaWriter = RescaledMetaWriterType::New();
rescaledMetaWriter->SetFileName( rescaledOutputImageFileName );
rescaledMetaWriter->SetInput( rescaledDicomReader->GetOutput() );
try
{
rescaledMetaWriter->Update();
}
catch( itk::ExceptionObject & error )
{
std::cerr << "Error: exception in file writer " << std::endl;
std::cerr << error << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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