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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkNrrdComplexImageReadTest.cxx,v $
Language: C++
Date: $Date: 2005-08-20 16:16:13 $
Version: $Revision: 1.1 $
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
#include <fstream>
#include "itkImageFileReader.h"
#include "itkImage.h"
#include <complex>
int itkNrrdComplexImageReadTest( int ac, char* av[] )
{
if(ac < 1)
{
std::cerr << "Usage: " << av[0] << " Input\n";
return EXIT_FAILURE;
}
typedef std::complex<float> PixelType;
typedef itk::Image<PixelType, 2> myImage;
itk::ImageFileReader<myImage>::Pointer reader
= itk::ImageFileReader<myImage>::New();
reader->SetFileName(av[1]);
try
{
reader->Update();
}
catch (itk::ExceptionObject & e)
{
std::cerr << "exception in file reader " << std::endl;
std::cerr << e.GetDescription() << std::endl;
std::cerr << e.GetLocation() << std::endl;
return EXIT_FAILURE;
}
myImage::Pointer image = reader->GetOutput();
// Pick off some pixels in the test image (the first, the last, and
// a few in between) and make sure that the values are very close to
// what we know to be correct, given that we know exactly what
// volume is being read. I/O errors will generate more than tiny
// differences near representational precision.
float err = 0;
myImage::IndexType coord;
PixelType sample;
coord[0] = 0;
coord[1] = 0;
sample = image->GetPixel(coord);
err += fabs(sample.real() - 27.985973);
err += fabs(sample.imag() - 0.0);
coord[0] = 53;
coord[1] = 43;
sample = image->GetPixel(coord);
err += fabs(sample.real() - -0.94961888);
err += fabs(sample.imag() - 0.409872);
coord[0] = 10;
coord[1] = 43;
sample = image->GetPixel(coord);
err += fabs(sample.real() - -0.096564025);
err += fabs(sample.imag() - 0.0094992276);
coord[0] = 10;
coord[1] = 0;
sample = image->GetPixel(coord);
err += fabs(sample.real() - 0.036231704);
err += fabs(sample.imag() - -0.016659589);
coord[0] = 42;
coord[1] = 42;
sample = image->GetPixel(coord);
err += fabs(sample.real() - -0.027012844);
err += fabs(sample.imag() - -0.012217643);
coord[0] = 50;
coord[1] = 40;
sample = image->GetPixel(coord);
err += fabs(sample.real() - 0.44949868);
err += fabs(sample.imag() - -0.033380687);
coord[0] = 8;
coord[1] = 9;
sample = image->GetPixel(coord);
err += fabs(sample.real() - -0.036674671);
err += fabs(sample.imag() - -0.0061681992);
double thresh = 0.00000038;
if (err > thresh)
{
std::cout << "failure because err == " << err
<< "> " << thresh << std::endl;
return EXIT_FAILURE;
}
else
{
return EXIT_SUCCESS;
}
}
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