itk 读取图像，两种格式之间转换

/************************************************************************

控制台运行程序
输入：
程序名称
读取图像文件名
保存图像文件名
输出：
保存另一种类型的图像
功能：
图像在jpeg和bmp两种格式之间互换
************************************************************************/

#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkImageIOFactory.h"
#include "itkBMPImageIOFactory.h"
#include "itkJPEGImageIOFactory.h"
#include <iostream>

int main(int argc , char *argv[])
{
if (argc < 3)
{
std::cerr << "Usage: " << std::endl;
std::cerr << argv[0] << " inputImageFile  outputImageFile " << std::endl;
return EXIT_FAILURE;
}

itk::BMPImageIOFactory::RegisterOneFactory();
itk::JPEGImageIOFactory::RegisterOneFactory();

typedef itk::Image< unsigned char, 2 > ImageType;
typedef itk::ImageFileReader< ImageType > ReaderType;
typedef itk::ImageFileWriter< ImageType > WriterType;

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

const char * inputFilename = argv[1];
const char * outputFilename = argv[2];

reader->SetFileName( inputFilename );
writer->SetFileName( outputFilename );

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

system("pause");
return 0;
}