ITK/Examples/Smoothing/MeanImageFilter: Difference between revisions

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(Use QuickView.)
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#include "itkMeanImageFilter.h"
#include "itkMeanImageFilter.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"
#include "vtkCamera.h"


int main(int argc, char * argv[])
int main(int argc, char * argv[])
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   if( argc < 2 )
   if( argc < 2 )
     {
     {
    std::cerr << "Usage: " << std::endl;
     std::cerr << argv[0] << " InputImageFile" << std::endl;
     std::cerr << argv[0] << " inputImageFile" << std::endl;
     return EXIT_FAILURE;
     return EXIT_FAILURE;
     }
     }
  // Parse command line arguments
  std::string inputFilename = argv[1];


   // Setup types
   // Setup types
   typedef itk::Image< unsigned char, 2 >                       UnsignedCharImageType;
   typedef itk::Image< unsigned char, 2 >               UnsignedCharImageType;
   typedef itk::ImageFileReader< UnsignedCharImageType >         readerType;
   typedef itk::ImageFileReader< UnsignedCharImageType > ReaderType;
   typedef itk::MeanImageFilter<
   typedef itk::MeanImageFilter<
  UnsignedCharImageType, UnsignedCharImageType > filterType;
    UnsignedCharImageType, UnsignedCharImageType > filterType;


   // Create and setup a reader
   // Create and setup a reader
   readerType::Pointer reader = readerType::New();
   ReaderType::Pointer reader = ReaderType::New();
   reader->SetFileName( inputFilename.c_str() );
   reader->SetFileName( argv[1] );


   // Create and setup a mean filter
   // Create and setup a mean filter
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   meanFilter->SetInput( reader->GetOutput() );
   meanFilter->SetInput( reader->GetOutput() );


   // Visualize the original image
   QuickView viewer;
  typedef itk::ImageToVTKImageFilter<UnsignedCharImageType> ConnectorType;
   viewer.AddImage(reader->GetOutput());
   ConnectorType::Pointer originalConnector = ConnectorType::New();
   viewer.AddImage(meanFilter->GetOutput());
  originalConnector->SetInput(reader->GetOutput());
   viewer.Visualize();
 
   vtkSmartPointer<vtkImageActor> originalActor =
    vtkSmartPointer<vtkImageActor>::New();
  originalActor->SetInput(originalConnector->GetOutput());
 
  // Visualize the filtered image
  typedef itk::ImageToVTKImageFilter<UnsignedCharImageType> ConnectorType;
  ConnectorType::Pointer filteredConnector = ConnectorType::New();
  filteredConnector->SetInput(meanFilter->GetOutput());
 
  vtkSmartPointer<vtkImageActor> filteredActor =
    vtkSmartPointer<vtkImageActor>::New();
  filteredActor->SetInput(filteredConnector->GetOutput());
 
   // Define viewport ranges
  // (xmin, ymin, xmax, ymax)
  double leftViewport[4] = {0.0, 0.0, 0.5, 1.0};
  double rightViewport[4] = {0.5, 0.0, 1.0, 1.0};
 
  // Setup both renderers
  vtkSmartPointer<vtkRenderWindow> renderWindow =
    vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->SetSize(600,300);
 
  vtkSmartPointer<vtkRenderer> leftRenderer =
    vtkSmartPointer<vtkRenderer>::New();
  renderWindow->AddRenderer(leftRenderer);
  leftRenderer->SetViewport(leftViewport);
 
  vtkSmartPointer<vtkRenderer> rightRenderer =
    vtkSmartPointer<vtkRenderer>::New();
  renderWindow->AddRenderer(rightRenderer);
  rightRenderer->SetViewport(rightViewport);
 
  leftRenderer->AddActor(originalActor);
  rightRenderer->AddActor(filteredActor);
 
  leftRenderer->ResetCamera();
  rightRenderer->SetActiveCamera(leftRenderer->GetActiveCamera());
 
  vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  vtkSmartPointer<vtkInteractorStyleImage> style =
    vtkSmartPointer<vtkInteractorStyleImage>::New();
 
  renderWindowInteractor->SetInteractorStyle(style);
 
  renderWindowInteractor->SetRenderWindow(renderWindow);
  renderWindowInteractor->Initialize();
 
  renderWindowInteractor->Start();


   return EXIT_SUCCESS;
   return EXIT_SUCCESS;

Revision as of 21:21, 15 December 2010

Replace every pixel in an image with the mean of its neighbors.

MeanImageFilter.cxx

<source lang="cpp">

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

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

 // Verify command line arguments
 if( argc < 2 )
   {
   std::cerr << argv[0] << " InputImageFile" << std::endl;
   return EXIT_FAILURE;
   }

 // Setup types
 typedef itk::Image< unsigned char, 2 >                UnsignedCharImageType;
 typedef itk::ImageFileReader< UnsignedCharImageType > ReaderType;
 typedef itk::MeanImageFilter<
   UnsignedCharImageType, UnsignedCharImageType > filterType;

 // Create and setup a reader
 ReaderType::Pointer reader = ReaderType::New();
 reader->SetFileName( argv[1] );

 // Create and setup a mean filter
 filterType::Pointer meanFilter = filterType::New();
 meanFilter->SetInput( reader->GetOutput() );

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

 return EXIT_SUCCESS;

} </source>

CMakeLists.txt

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

PROJECT(MeanImageFilter)

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(MeanImageFilter MeanImageFilter.cxx) TARGET_LINK_LIBRARIES(MeanImageFilter vtkHybrid ITKBasicFilters ITKIO ITKCommon)

</source>

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