ITK/Examples/IO/ImageFileReader: Difference between revisions

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#include "itkImageFileReader.h"
#include "itkImageFileReader.h"


#include <itkImageToVTKImageFilter.h>
#include "QuickView.h"
 
#include "vtkImageViewer.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkSmartPointer.h"
#include "vtkImageActor.h"
#include "vtkInteractorStyleImage.h"
#include "vtkRenderer.h"


int main(int argc, char *argv[])
int main(int argc, char *argv[])
{
{
   if(argc < 2)
   if( argc < 2 )
     {
     {
     std::cerr << "Required: filename" << std::endl;
     std::cerr << "Usage: " << std::endl;
 
    std::cerr << argv[0] << " inputImageFile" << std::endl;
     return EXIT_FAILURE;
     return EXIT_FAILURE;
     }
     }
  std::string inputFilename = argv[1];


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


  typedef itk::ImageFileReader<ImageType> ReaderType;
   ReaderType::Pointer reader = ReaderType::New();
   ReaderType::Pointer reader = ReaderType::New();
  reader->SetFileName(argv[1]);


   reader->SetFileName(inputFilename.c_str());
   QuickView viewer;
   reader->Update();
   viewer.AddImage<ImageType>(reader->GetOutput());
 
   viewer.Visualize();
  typedef itk::ImageToVTKImageFilter<ImageType> ConnectorType;
  ConnectorType::Pointer connector = ConnectorType::New();
  connector->SetInput(reader->GetOutput());
 
   vtkSmartPointer<vtkImageActor> actor =
    vtkSmartPointer<vtkImageActor>::New();
  actor->SetInput(connector->GetOutput());
 
  // There will be one render window
  vtkSmartPointer<vtkRenderWindow> renderWindow =
    vtkSmartPointer<vtkRenderWindow>::New();
 
  vtkSmartPointer<vtkRenderWindowInteractor> interactor =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  interactor->SetRenderWindow(renderWindow);
 
  vtkSmartPointer<vtkRenderer> renderer =
    vtkSmartPointer<vtkRenderer>::New();
  renderWindow->AddRenderer(renderer);
 
  renderer->AddActor(actor);
  renderer->ResetCamera();
 
  renderWindow->Render();
 
  vtkSmartPointer<vtkInteractorStyleImage> style =
    vtkSmartPointer<vtkInteractorStyleImage>::New();
 
  interactor->SetInteractorStyle(style);


  interactor->Start();
 
   return EXIT_SUCCESS;
   return EXIT_SUCCESS;
}
}

Revision as of 17:56, 12 December 2010

This example demonstrates how to read an image file into a itkImage. The file type is determined by the extension of the specified filename.

ImageFileReader.cxx

<source lang="cpp">

  1. include "itkImage.h"
  2. include "itkImageFileReader.h"
  1. include "QuickView.h"

int main(int argc, char *argv[]) { 

 if( argc < 2 )
   {
   std::cerr << "Usage: " << std::endl;
   std::cerr << argv[0] << " inputImageFile" << std::endl;
   return EXIT_FAILURE;
   }

 typedef itk::Image< double, 2 >         ImageType;
 typedef itk::ImageFileReader<ImageType> ReaderType;

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

 QuickView viewer;
 viewer.AddImage<ImageType>(reader->GetOutput());
 viewer.Visualize();

 return EXIT_SUCCESS;

} </source>

CMakeLists.txt

<source lang="cmake"> cmake_minimum_required(VERSION 2.6)

PROJECT(ImageFileReader)

include_directories(/home/doriad/src/ITK/Wrapping/WrapITK/ExternalProjects/ItkVtkGlue/src/)

FIND_PACKAGE(VTK REQUIRED) INCLUDE(${VTK_USE_FILE})

FIND_PACKAGE(ITK REQUIRED) INCLUDE(${ITK_USE_FILE})

ADD_EXECUTABLE(ImageFileReader ImageFileReader.cxx) TARGET_LINK_LIBRARIES(ImageFileReader vtkHybrid ITKIO ITKBasicFilters ITKCommon ) </source>

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