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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 <iostream>
#include "itkGDCMSeriesFileNames.h"
#include "itkGDCMImageIO.h"
#include "itkImageFileReader.h"
#include "gdcmImageHelper.h"
//
// This test is specifically for a problem detected in GDCMImageIO
// by Andriy Fedorov, who noticed that the DCMTK reader
// reported the correct spacing for this DICOM dataset, but GDCM
// report spacing of 1,1,1 ... looking through the gdcm library
// code in Modules/ThirdParty/GDCM, I noticed that in
// gdcmImageHelper.cxx there was a bunch of elaborate code that in the
// case of Andriy's dataset, used the wrong tag to find the spacing,
// ignored the error when the tag wasn't found, and silenetly returned
// 1,1,1 for the spacing.
// The patch that this test is part of has a fallback for the case of
// the MediaStorageTypes for which gdcm has trouble with the spacing tag.
int itkGDCMLoadImageSpacingTest(int argc, char *argv[])
{
if(argc < 4)
{
std::cerr << "Usage: " << argv[0] << " Image Spacing0 Spacing1" << std::endl;
return EXIT_FAILURE;
}
const char * imageFilename = argv[1];
const double spacing0 = atof( argv[2] );
const double spacing1 = atof( argv[3] );
typedef itk::Image<unsigned short, 2> ImageType;
typedef itk::ImageFileReader<ImageType> ReaderType;
itk::GDCMImageIO::Pointer imageIO = itk::GDCMImageIO::New();
ReaderType::Pointer reader = ReaderType::New();
reader->SetImageIO( imageIO );
reader->SetFileName( imageFilename );
try
{
reader->Update();
}
catch( itk::ExceptionObject & error )
{
std::cerr << "Error when reading input: " << error << std::endl;
}
ImageType::Pointer image = reader->GetOutput();
std::cout << image << std::endl;
ImageType::SpacingType spacing = image->GetSpacing();
if(std::abs( spacing[0]- spacing0 ) >= 0.000001 ||
std::abs( spacing[1]- spacing1 ) >= 0.000001 )
{
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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