itkmetaimagestreamingiotest.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: itkMetaImageStreamingIOTest.cxx,v $
  Language:  C++
  Date:      $Date: 2007-09-06 18:32:53 $
  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

#ifdef __BORLANDC__
#define ITK_LEAN_AND_MEAN
#endif

#include <fstream>
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkStreamingImageFilter.h"
#include "itkMedianImageFilter.h"

int itkMetaImageStreamingIOTest(int ac, char* av[])
{
  //  Image types are defined below.
  typedef unsigned char       InputPixelType;
  typedef unsigned char       OutputPixelType;
  const   unsigned int        Dimension = 3;

  typedef itk::Image< InputPixelType,  Dimension >    InputImageType;
  typedef itk::Image< OutputPixelType, Dimension >    OutputImageType;

  typedef itk::ImageFileReader< InputImageType  >  ReaderType;
  typedef itk::ImageFileWriter< OutputImageType >  WriterType;

  typedef itk::MedianImageFilter< OutputImageType,
                                            OutputImageType > FilterType;

  typedef itk::StreamingImageFilter< OutputImageType,
                                            OutputImageType > StreamingFilterType;

  FilterType::Pointer filter = FilterType::New();

  StreamingFilterType::Pointer streamer = StreamingFilterType::New();

  ReaderType::Pointer reader = ReaderType::New();
  WriterType::Pointer writer = WriterType::New();

  const std::string inputFilename  = av[1];
  const std::string outputFilename = av[2];

  reader->SetFileName( inputFilename  );
  reader->SetUseStreaming(true);

  writer->SetFileName( outputFilename );

  InputImageType::SizeType indexRadius;
  
  indexRadius[0] = 1; // radius along x
  indexRadius[1] = 1; // radius along y
  indexRadius[2] = 1; // radius along Z

  filter->SetRadius( indexRadius );

  //filter->SetInput( reader->GetOutput() );
  streamer->SetInput( reader->GetOutput() );
  writer->SetInput( streamer->GetOutput() );

  // By default we decide to use 4 pieces, but this value can
  // be changed from the command line.
  unsigned int numberOfDataPieces = 4;
  if( ac > 3 )
    {
    numberOfDataPieces = atoi( av[3] );
    }

  streamer->SetNumberOfStreamDivisions( numberOfDataPieces );

  try
    {
    writer->Update();
    }
  catch( itk::ExceptionObject & err )
    {
    std::cerr << "ExceptionObject caught !" << std::endl;
    std::cerr << err << std::endl;
    return EXIT_FAILURE;
    }
  return EXIT_SUCCESS;
}