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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 "itkGDCMImageIO.h"
#include "itkMetaDataObject.h"
#include "itkRandomImageSource.h"
#include <string>
#include <sstream>
#include <vector>
#include "itkMath.h"
int itkGDCMImagePositionPatientTest( int argc, char* argv[] )
{
if( argc < 2 )
{
std::cerr << "Usage: " << argv[0] <<
" OutputTestDirectory" << std::endl;
return EXIT_FAILURE;
}
typedef itk::Image<short,3> Image3DType;
typedef itk::Image<short,2> Image2DType;
typedef itk::ImageFileReader< Image3DType > ReaderType;
typedef itk::RandomImageSource<Image2DType> RandomImageSource2DType;
typedef itk::ImageFileWriter< Image2DType > Writer2DType;
typedef itk::GDCMImageIO ImageIOType;
typedef itk::MetaDataDictionary DictionaryType;
DictionaryType dict;
// Create a 2D image
Image2DType::SpacingType spacing2D;
spacing2D[0] = 10.0;
spacing2D[1] = 100.0;
Image2DType::DirectionType direction2D;
direction2D[0][0] = .5;
direction2D[0][1] = .7;
direction2D[1][0] = .7;
direction2D[1][1] = .5;
Image2DType::SizeType size2D;
size2D.Fill(16);
RandomImageSource2DType::Pointer src2D =
RandomImageSource2DType::New();
src2D->SetMin(0);
src2D->SetMax(255);
src2D->SetSpacing(spacing2D);
src2D->SetSize(size2D);
ImageIOType::Pointer gdcmIO =
ImageIOType::New();
DictionaryType dictionary;
// Set all required DICOM fields
std::ostringstream value;
double origin3D[3];
origin3D[0] = 1.0;
origin3D[1] = 2.0;
origin3D[2] = 3.0;
value.str("");
value << origin3D[0] << "\\" << origin3D[1] << "\\" << origin3D[2];
itk::EncapsulateMetaData<std::string>(dictionary,"0020|0032", value.str());
// GDCM will not write IPP unless the modality is one of CT, MR or RT.
std::string modality("CT");
itk::EncapsulateMetaData<std::string>(dictionary, "0008|0060", modality);
src2D->GetOutput()->SetMetaDataDictionary(dictionary);
Writer2DType::Pointer writer2D = Writer2DType::New();
std::ostringstream filename;
filename.str("");
filename << argv[1] << "/itkGDCMImagePositionPatientTest.dcm";
writer2D->SetInput(src2D->GetOutput());
writer2D->SetFileName(filename.str().c_str());
try
{
writer2D->SetImageIO(gdcmIO);
writer2D->Update();
}
catch( itk::ExceptionObject & excp )
{
std::cerr << "Exception thrown while writing the file: " << filename.str() << std::endl;
std::cerr << excp << std::endl;
return EXIT_FAILURE;
}
// Now read the dicom back and check its origin
ReaderType::Pointer reader =
ReaderType::New();
reader->SetFileName(filename.str().c_str());
reader->Update();
Image3DType::PointType readerOrigin3D;
readerOrigin3D = reader->GetOutput()->GetOrigin();
if ((itk::Math::NotExactlyEquals(readerOrigin3D[0], origin3D[0])) ||
(itk::Math::NotExactlyEquals(readerOrigin3D[1], origin3D[1])) ||
(itk::Math::NotExactlyEquals(readerOrigin3D[2], origin3D[2])))
{
std::cout << "ERROR: read origin does not equal written origin: "
<< readerOrigin3D << " != ["
<< origin3D[0] << ", "
<< origin3D[1] << ", "
<< origin3D[2] << "]\n";
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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