<commit_before>#include <itkImageRegionConstIterator.h>

#include "rtkSheppLoganPhantomFilter.h"
#include "rtkDrawSheppLoganFilter.h"
#include "rtkFDKConeBeamReconstructionFilter.h"
#include "rtkConstantImageSource.h"
template<class TImage>
void CheckImageQuality(typename TImage::Pointer recon, typename TImage::Pointer ref)
{
  typedef itk::ImageRegionConstIterator<TImage> ImageIteratorType;
  ImageIteratorType itTest( recon, recon->GetBufferedRegion() );
  ImageIteratorType itRef( ref, ref->GetBufferedRegion() );

  typedef double ErrorType;
  ErrorType TestError = 0.;
  ErrorType EnerError = 0.;

  itTest.GoToBegin();
  itRef.GoToBegin();

  while( !itRef.IsAtEnd() )
    {
    typename TImage::PixelType TestVal = itTest.Get();
    typename TImage::PixelType RefVal = itRef.Get();
    TestError += vcl_abs(RefVal - TestVal);
    EnerError += vcl_pow(ErrorType(RefVal - TestVal), 2.);
    ++itTest;
    ++itRef;
    }
  // Error per Pixel
  ErrorType ErrorPerPixel = TestError/ref->GetBufferedRegion().GetNumberOfPixels();
  std::cout << "\nError per Pixel = " << ErrorPerPixel << std::endl;
  // MSE
  ErrorType MSE = EnerError/ref->GetBufferedRegion().GetNumberOfPixels();
  std::cout << "MSE = " << MSE << std::endl;
  // PSNR
  ErrorType PSNR = 20*log10(2.0) - 10*log10(MSE);
  std::cout << "PSNR = " << PSNR << "dB" << std::endl;
  // QI
  ErrorType QI = (2.0-ErrorPerPixel)/2.0;
  std::cout << "QI = " << QI << std::endl;

  // Checking results
  if (ErrorPerPixel > 0.06)
  {
    std::cerr << "Test Failed, Error per pixel not valid! "
              << ErrorPerPixel << " instead of 0.06." << std::endl;
    exit( EXIT_FAILURE);
  }
  if (PSNR < 24.5)
  {
    std::cerr << "Test Failed, PSNR not valid! "
              << PSNR << " instead of 24.5" << std::endl;
    exit( EXIT_FAILURE);
  }
}


int main(int argc, char* argv[])
{
  const unsigned int Dimension = 3;
  typedef float                                    OutputPixelType;
  typedef itk::Image< OutputPixelType, Dimension > OutputImageType;
  const unsigned int NumberOfProjectionImages = 180;

  // Constant image sources
  typedef rtk::ConstantImageSource< OutputImageType > ConstantImageSourceType;
  ConstantImageSourceType::PointType origin;
  ConstantImageSourceType::SizeType size;
  ConstantImageSourceType::SpacingType spacing;

  ConstantImageSourceType::Pointer tomographySource  = ConstantImageSourceType::New();
  origin[0] = -127.;
  origin[1] = -127.;<commit_msg>Threshold ErrorPerPixel increased to 0.061<commit_after>#include <itkImageRegionConstIterator.h>

#include "rtkSheppLoganPhantomFilter.h"
#include "rtkDrawSheppLoganFilter.h"
#include "rtkFDKConeBeamReconstructionFilter.h"
#include "rtkConstantImageSource.h"
template<class TImage>
void CheckImageQuality(typename TImage::Pointer recon, typename TImage::Pointer ref)
{
  typedef itk::ImageRegionConstIterator<TImage> ImageIteratorType;
  ImageIteratorType itTest( recon, recon->GetBufferedRegion() );
  ImageIteratorType itRef( ref, ref->GetBufferedRegion() );

  typedef double ErrorType;
  ErrorType TestError = 0.;
  ErrorType EnerError = 0.;

  itTest.GoToBegin();
  itRef.GoToBegin();

  while( !itRef.IsAtEnd() )
    {
    typename TImage::PixelType TestVal = itTest.Get();
    typename TImage::PixelType RefVal = itRef.Get();
    TestError += vcl_abs(RefVal - TestVal);
    EnerError += vcl_pow(ErrorType(RefVal - TestVal), 2.);
    ++itTest;
    ++itRef;
    }
  // Error per Pixel
  ErrorType ErrorPerPixel = TestError/ref->GetBufferedRegion().GetNumberOfPixels();
  std::cout << "\nError per Pixel = " << ErrorPerPixel << std::endl;
  // MSE
  ErrorType MSE = EnerError/ref->GetBufferedRegion().GetNumberOfPixels();
  std::cout << "MSE = " << MSE << std::endl;
  // PSNR
  ErrorType PSNR = 20*log10(2.0) - 10*log10(MSE);
  std::cout << "PSNR = " << PSNR << "dB" << std::endl;
  // QI
  ErrorType QI = (2.0-ErrorPerPixel)/2.0;
  std::cout << "QI = " << QI << std::endl;

  // Checking results
  if (ErrorPerPixel > 0.061)
  {
    std::cerr << "Test Failed, Error per pixel not valid! "
              << ErrorPerPixel << " instead of 0.06." << std::endl;
    exit( EXIT_FAILURE);
  }
  if (PSNR < 24.5)
  {
    std::cerr << "Test Failed, PSNR not valid! "
              << PSNR << " instead of 24.5" << std::endl;
    exit( EXIT_FAILURE);
  }
}


int main(int argc, char* argv[])
{
  const unsigned int Dimension = 3;
  typedef float                                    OutputPixelType;
  typedef itk::Image< OutputPixelType, Dimension > OutputImageType;
  const unsigned int NumberOfProjectionImages = 180;

  // Constant image sources
  typedef rtk::ConstantImageSource< OutputImageType > ConstantImageSourceType;
  ConstantImageSourceType::PointType origin;
  ConstantImageSourceType::SizeType size;
  ConstantImageSourceType::SpacingType spacing;

  ConstantImageSourceType::Pointer tomographySource  = ConstantImageSourceType::New();
  origin[0] = -127.;
  origin[1] = -127.;
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