itkimageiodirection3dtest.cxx

DTMK软件开发包,此为开源软件,是一款很好的医学图像开发资源.

/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkImageIODirection3DTest.cxx,v $
  Language:  C++
  Date:      $Date: 2007-10-11 22:38:54 $
  Version:   $Revision: 1.3 $

  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 "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkOrientedImage.h"

int itkImageIODirection3DTest( int ac, char * av[] )
{

  if( ac < 11 )
    {
    std::cerr << "Usage: " << av[0] 
    << " InputImage  (9 direction cosines terms) " 
    << "[outputImage]" 
    << std::endl;
    return EXIT_FAILURE;
    }
  
  const unsigned int Dimension = 3;
  typedef unsigned char PixelType;

  typedef itk::Image<PixelType, Dimension>    ImageType;
  typedef itk::ImageFileReader< ImageType >   ReaderType;

  ReaderType::Pointer reader = ReaderType::New();
  
  reader->SetFileName( av[1] );

  try
    {
    reader->Update();
    }
  catch (itk::ExceptionObject & e)
    {
    std::cerr << e << std::endl;
    return EXIT_FAILURE;
    }
  
  ImageType::ConstPointer image = reader->GetOutput();
   
  ImageType::DirectionType directionCosines = image->GetDirection();

  std::cout << directionCosines << std::endl;

  unsigned int element = 2;
  const double tolerance = 1e-5;

  for( unsigned int row=0; row < Dimension; ++row )
    {
    for( unsigned int col = 0; col < Dimension; ++col )
      {
      const double expectedValue = atof( av[ element++ ] );
      const double currentValue = directionCosines[row][col];
      const double difference = currentValue - expectedValue;
      if( vnl_math_abs( difference ) > tolerance )
        {
        std::cerr << "Error: " << std::endl;
        std::cerr << "Expected " << expectedValue << std::endl;
        std::cerr << "Read     " << currentValue << std::endl;
        return EXIT_FAILURE;
        }
      }
    }


  if( ac > 11 )
    {
    typedef itk::ImageFileWriter< ImageType >   WriterType;
    WriterType::Pointer writer = WriterType::New();
    writer->SetFileName( av[11] );
    writer->SetInput( reader->GetOutput() );

    try
      {
      writer->Update();
      }
    catch (itk::ExceptionObject & e)
      {
      std::cerr << e << std::endl;
      return EXIT_FAILURE;
      }
    }


  return EXIT_SUCCESS;
}