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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 "itkImageFileWriter.h"
#include "itkImageFileReader.h"
#include "itkTimeProbesCollectorBase.h"
#include "itkMetaImageIO.h"
#define SPECIFIC_IMAGEIO_MODULE_TEST
namespace {
template <typename TImageType>
int ActualTest( std::string filename, typename TImageType::SizeType size )
{
typedef TImageType ImageType;
typedef typename ImageType::PixelType PixelType;
typedef itk::ImageFileWriter< ImageType > WriterType;
typedef itk::ImageFileReader< ImageType > ReaderType;
typedef itk::ImageRegionIterator< ImageType > IteratorType;
typedef itk::ImageRegionConstIterator< ImageType > ConstIteratorType;
typename ImageType::RegionType region;
typename ImageType::IndexType index;
PixelType pixelValue;
itk::TimeProbesCollectorBase chronometer;
{ // begin write block
typename ImageType::Pointer image = ImageType::New();
index.Fill(0);
region.SetSize(size);
region.SetIndex(index);
image->SetRegions(region);
size_t numberOfPixels = 1;
for (unsigned int i = 0; i < ImageType::ImageDimension; ++i )
{
numberOfPixels *= region.GetSize( i );
}
const unsigned long sizeInMegaBytes = static_cast< unsigned long >(
( sizeof(PixelType) * numberOfPixels ) / ( 1024.0 * 1024.0 ) );
std::cout << "Trying to allocate an image of size " << sizeInMegaBytes << " Mb " << std::endl;
chronometer.Start("Allocate");
image->Allocate();
chronometer.Stop("Allocate");
std::cout << "Initializing pixel values " << std::endl;
IteratorType itr( image, region );
itr.GoToBegin();
pixelValue = itk::NumericTraits< PixelType >::ZeroValue();
chronometer.Start("Initializing");
while( !itr.IsAtEnd() )
{
itr.Set( pixelValue );
++pixelValue;
++itr;
}
chronometer.Stop("Initializing");
std::cout << "Trying to write the image to disk" << std::endl;
try
{
typename WriterType::Pointer writer = WriterType::New();
writer->SetInput(image);
writer->SetFileName( filename );
chronometer.Start("Write");
writer->Update();
chronometer.Stop("Write");
}
catch (itk::ExceptionObject &ex)
{
std::cout << ex << std::endl;
return EXIT_FAILURE;
}
} // end write block to free the memory
std::cout << "Trying to read the image back from disk" << std::endl;
typename ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName( filename );
itk::MetaImageIO::Pointer io = itk::MetaImageIO::New();
reader->SetImageIO(io);
try
{
chronometer.Start("Read");
reader->Update();
chronometer.Stop("Read");
}
catch (itk::ExceptionObject &ex)
{
std::cout << ex << std::endl;
return EXIT_FAILURE;
}
typename ImageType::ConstPointer readImage = reader->GetOutput();
ConstIteratorType ritr( readImage, region );
ritr.GoToBegin();
std::cout << "Comparing the pixel values.. :" << std::endl;
pixelValue = itk::NumericTraits< PixelType >::ZeroValue();
chronometer.Start("Compare");
while( !ritr.IsAtEnd() )
{
if( ritr.Get() != pixelValue )
{
std::cerr << "Pixel comparison failed at index = " << ritr.GetIndex() << std::endl;
std::cerr << "Expected pixel value " << pixelValue << std::endl;
std::cerr << "Read Image pixel value " << ritr.Get() << std::endl;
return EXIT_FAILURE;
}
++pixelValue;
++ritr;
}
chronometer.Stop("Compare");
chronometer.Report( std::cout );
std::cout << std::endl;
std::cout << "Test PASSED !" << std::endl;
return EXIT_SUCCESS;
}
}
int itkLargeMetaImageWriteReadTest(int ac, char* argv[])
{
if (ac < 3)
{
std::cout << "usage: itkIOTests itkLargeMetaImageWriteReadTest outputFileName numberOfPixelsInOneDimension [numberOfZslices]" << std::endl;
return EXIT_FAILURE;
}
const std::string filename = argv[1];
if ( ac == 3 )
{
const unsigned int Dimension = 2;
typedef unsigned short PixelType;
typedef itk::Image< PixelType, Dimension> ImageType;
ImageType::SizeType size;
size.Fill( atol( argv[2] ) );
return ActualTest< ImageType >( filename, size );
}
else
{
const unsigned int Dimension = 3;
typedef unsigned short PixelType;
typedef itk::Image< PixelType, Dimension> ImageType;
ImageType::SizeType size;
size.Fill( atol( argv[2] ) );
size[2] = atol( argv[3] );
return ActualTest< ImageType >( filename, size );
}
}
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