ITK/Examples/ImageProcessing/NormalizeImageFilter: Difference between revisions

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(Use QuickView. Make example more illustrative.)
Line 4: Line 4:
#include "itkImageFileReader.h"
#include "itkImageFileReader.h"
#include "itkNormalizeImageFilter.h"
#include "itkNormalizeImageFilter.h"
#include "itkRescaleIntensityImageFilter.h"
#include "itkStatisticsImageFilter.h"


#include <itkImageToVTKImageFilter.h>
#include "QuickView.h"


#include "vtkImageViewer.h"
#include <iomanip>
#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[])
Line 19: Line 14:
   if(argc < 2)
   if(argc < 2)
     {
     {
     std::cerr << "Required: filename" << std::endl;
     std::cerr << "Usage: " << argv[0] << " filename" << std::endl;
     return EXIT_FAILURE;
     return EXIT_FAILURE;
     }
     }


   typedef itk::Image<unsigned char, 2>  UnsignedCharImageType;
   typedef itk::Image<double, 2>  FloatImageType;
  typedef itk::Image<float, 2>  FloatImageType;


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


  typedef itk::ImageToVTKImageFilter<UnsignedCharImageType> ConnectorType;
   typedef itk::NormalizeImageFilter< FloatImageType, FloatImageType >
  ConnectorType::Pointer originalConnector = ConnectorType::New();
    NormalizeFilterType;
  originalConnector->SetInput(reader->GetOutput());
  vtkSmartPointer<vtkImageActor> originalActor =
    vtkSmartPointer<vtkImageActor>::New();
  originalActor->SetInput(originalConnector->GetOutput());
 
   typedef itk::NormalizeImageFilter< UnsignedCharImageType, FloatImageType > NormalizeFilterType;
   NormalizeFilterType::Pointer normalizeFilter = NormalizeFilterType::New();
   NormalizeFilterType::Pointer normalizeFilter = NormalizeFilterType::New();
   normalizeFilter->SetInput(reader->GetOutput());
   normalizeFilter->SetInput(reader->GetOutput());


   typedef itk::RescaleIntensityImageFilter< FloatImageType, UnsignedCharImageType > RescaleFilterType;
   typedef itk::StatisticsImageFilter< FloatImageType >
  RescaleFilterType::Pointer rescaleFilter = RescaleFilterType::New();
    StatisticsFilterType;
   rescaleFilter->SetInput(normalizeFilter->GetOutput());
   StatisticsFilterType::Pointer statistics1 = StatisticsFilterType::New();
  rescaleFilter->SetOutputMinimum(0);
   statistics1->SetInput(reader->GetOutput());
  rescaleFilter->SetOutputMaximum(255);
 
  ConnectorType::Pointer normalizedConnector = ConnectorType::New();
   normalizedConnector->SetInput(rescaleFilter->GetOutput());
 
  vtkSmartPointer<vtkImageActor> normalizedActor =
    vtkSmartPointer<vtkImageActor>::New();
  normalizedActor->SetInput(normalizedConnector->GetOutput());
 
  // There will be one render window
  vtkSmartPointer<vtkRenderWindow> renderWindow =
    vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->SetSize(900, 300);
 
  vtkSmartPointer<vtkRenderWindowInteractor> interactor =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  interactor->SetRenderWindow(renderWindow);
 
  // 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<vtkRenderer> leftRenderer =
    vtkSmartPointer<vtkRenderer>::New();
  renderWindow->AddRenderer(leftRenderer);
  leftRenderer->SetViewport(leftViewport);
  leftRenderer->SetBackground(.6, .5, .4);
 
  vtkSmartPointer<vtkRenderer> rightRenderer =
    vtkSmartPointer<vtkRenderer>::New();
  renderWindow->AddRenderer(rightRenderer);
  rightRenderer->SetViewport(rightViewport);
  rightRenderer->SetBackground(.4, .5, .6);
 
  // Add the sphere to the left and the cube to the right
  leftRenderer->AddActor(originalActor);
  rightRenderer->AddActor(normalizedActor);


   leftRenderer->ResetCamera();
   StatisticsFilterType::Pointer statistics2 = StatisticsFilterType::New();
   rightRenderer->ResetCamera();
   statistics2->SetInput(normalizeFilter->GetOutput());


   renderWindow->Render();
   QuickView viewer;


   vtkSmartPointer<vtkInteractorStyleImage> style =
   std::stringstream desc1;
     vtkSmartPointer<vtkInteractorStyleImage>::New();
  statistics1->Update();
  desc1 << itksys::SystemTools::GetFilenameName(argv[1])
        << "\nMean: " << statistics1->GetMean()
        << " Variance: " << statistics1->GetVariance();
  viewer.AddImage(
     reader->GetOutput(),
    true,
    desc1.str());


   interactor->SetInteractorStyle(style);
   std::stringstream desc2;
  statistics2->Update();
  desc2 << "Normalize"
        << "\nMean: "
        << std::fixed << std::setprecision (2) << statistics2->GetMean()
        << " Variance: " << statistics2->GetVariance();
  viewer.AddImage(
    normalizeFilter->GetOutput(),
    true,
    desc2.str());


   interactor->Start();
   viewer.Visualize();


   return EXIT_SUCCESS;
   return EXIT_SUCCESS;

Revision as of 04:45, 21 December 2010

NormalizeImageFilter.cxx

<source lang="cpp">

  1. include "itkImage.h"
  2. include "itkImageFileReader.h"
  3. include "itkNormalizeImageFilter.h"
  4. include "itkStatisticsImageFilter.h"
  1. include "QuickView.h"
  1. include <iomanip>

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

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

 typedef itk::Image<double, 2>  FloatImageType;

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

 typedef itk::NormalizeImageFilter< FloatImageType, FloatImageType >
   NormalizeFilterType;
 NormalizeFilterType::Pointer normalizeFilter = NormalizeFilterType::New();
 normalizeFilter->SetInput(reader->GetOutput());

 typedef itk::StatisticsImageFilter< FloatImageType >
   StatisticsFilterType;
 StatisticsFilterType::Pointer statistics1 = StatisticsFilterType::New();
 statistics1->SetInput(reader->GetOutput());

 StatisticsFilterType::Pointer statistics2 = StatisticsFilterType::New();
 statistics2->SetInput(normalizeFilter->GetOutput());

 QuickView viewer;

 std::stringstream desc1;
 statistics1->Update();
 desc1 << itksys::SystemTools::GetFilenameName(argv[1])
       << "\nMean: " << statistics1->GetMean()
       << " Variance: " << statistics1->GetVariance();
 viewer.AddImage(
   reader->GetOutput(),
   true,
   desc1.str());  

 std::stringstream desc2;
 statistics2->Update();
 desc2 << "Normalize"
       << "\nMean: "
       << std::fixed << std::setprecision (2) << statistics2->GetMean()
       << " Variance: " << statistics2->GetVariance();
 viewer.AddImage(
   normalizeFilter->GetOutput(),
   true,
   desc2.str());  

 viewer.Visualize();

 return EXIT_SUCCESS;

} </source>

CMakeLists.txt

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

PROJECT(NormalizeImageFilter)

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


</source>

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