ITK/Examples/ImageProcessing/RegionOfInterestImageFilter: Difference between revisions

From KitwarePublic
< ITK‎ | Examples
Jump to navigationJump to search
(Deprecated content that is moved to sphinx)
 
(4 intermediate revisions by one other user not shown)
Line 1: Line 1:
==RegionOfInterestImageFilter.cxx==
{{warning|1=The media wiki content on this page is no longer maintained.  The examples presented on the https://itk.org/Wiki/*  pages likely require ITK version 4.13 or earlier releases.   In many cases, the examples on this page no longer conform to the best practices for modern ITK versions.
<source lang="cpp">
}}
#include "itkImage.h"
#include "itkImageFileReader.h"
#include "itkRegionOfInterestImageFilter.h"


#include "itkImageToVTKImageFilter.h"
[https://itk.org/ITKExamples[ITK Sphinx Examples]]
 
#include "vtkImageViewer.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkSmartPointer.h"
#include "vtkImageActor.h"
#include "vtkInteractorStyleImage.h"
#include "vtkRenderer.h"
 
#include <iostream>
#include <string>
 
int main(int argc, char *argv[])
{
if(argc < 2)
{
std::cerr << "Required: filename" << std::endl;
return EXIT_FAILURE;
}
 
std::string filename = argv[1];
 
typedef itk::Image<unsigned char, 2> ImageType;
typedef itk::ImageFileReader<ImageType> ReaderType;
typedef itk::ImageToVTKImageFilter<ImageType> ConnectorType;
 
ReaderType::Pointer reader = ReaderType::New();
ConnectorType::Pointer originalConnector = ConnectorType::New();
ConnectorType::Pointer extractedConnector = ConnectorType::New();
 
reader->SetFileName(filename.c_str());
reader->Update();
 
ImageType::SizeType inSize = reader->GetOutput()->GetLargestPossibleRegion().GetSize();
 
originalConnector->SetInput(reader->GetOutput());
 
vtkSmartPointer<vtkImageActor> originalActor =
vtkSmartPointer<vtkImageActor>::New();
originalActor->SetInput(originalConnector->GetOutput());
 
typedef itk::RegionOfInterestImageFilter< ImageType, ImageType > FilterType;
FilterType::Pointer filter = FilterType::New();
 
ImageType::IndexType start;
start[0] = inSize[0]/4;
start[1] = inSize[1]/4;
 
ImageType::SizeType size;
size[0] = inSize[0]/4;
size[1] = inSize[1]/4;
 
ImageType::RegionType desiredRegion;
desiredRegion.SetSize(size);
desiredRegion.SetIndex(start);
 
filter->SetRegionOfInterest(desiredRegion);
filter->SetInput(reader->GetOutput());
 
extractedConnector->SetInput(filter->GetOutput());
 
vtkSmartPointer<vtkImageActor> extractedActor =
vtkSmartPointer<vtkImageActor>::New();
extractedActor->SetInput(extractedConnector->GetOutput());
 
// There will be one render window
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->SetSize(600, 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(extractedActor);
 
leftRenderer->ResetCamera();
rightRenderer->ResetCamera();
 
renderWindow->Render();
 
vtkSmartPointer<vtkInteractorStyleImage> style =
vtkSmartPointer<vtkInteractorStyleImage>::New();
 
interactor->SetInteractorStyle(style);
 
interactor->Start();
 
return EXIT_SUCCESS;
}
</source>
 
==CMakeLists.txt==
<source lang="cmake">
cmake_minimum_required(VERSION 2.6)
 
PROJECT(RegionOfInterestImageFilter)
 
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(RegionOfInterestImageFilter RegionOfInterestImageFilter.cpp)
TARGET_LINK_LIBRARIES(RegionOfInterestImageFilter
vtkHybrid
ITKBasicFilters ITKCommon ITKIO)
 
</source>

Latest revision as of 15:39, 31 May 2019

Warning: The media wiki content on this page is no longer maintained. The examples presented on the https://itk.org/Wiki/* pages likely require ITK version 4.13 or earlier releases. In many cases, the examples on this page no longer conform to the best practices for modern ITK versions.

[ITK Sphinx Examples]