ITK  5.1.0
Insight Toolkit
SphinxExamples/src/Core/Common/InPlaceFilterOfImage/Code.cxx
/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#include "itkImage.h"
#include "vtkVersion.h"
#include "vtkSmartPointer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderer.h"
#include "vtkInteractorStyleImage.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkImageActor.h"
#include "vtkImageMapper3D.h"
#include "vtkImageViewer.h"
using ImageType = itk::Image<unsigned char, 2>;
static void
ApplyThresholding(ImageType::Pointer image);
int
main(int argc, char * argv[])
{
if (argc < 2)
{
std::cerr << "Required: filename" << std::endl;
return EXIT_FAILURE;
}
std::string inputFilename = argv[1];
using ReaderType = itk::ImageFileReader<ImageType>;
ReaderType::Pointer reader = ReaderType::New();
reader->SetFileName(inputFilename.c_str());
reader->Update();
ImageType::Pointer image = reader->GetOutput();
ApplyThresholding(image);
// Visualize
ConnectorType::Pointer connector = ConnectorType::New();
connector->SetInput(image);
vtkSmartPointer<vtkImageActor> actor = vtkSmartPointer<vtkImageActor>::New();
#if VTK_MAJOR_VERSION <= 5
actor->SetInput(connector->GetOutput());
#else
connector->Update();
actor->GetMapper()->SetInputData(connector->GetOutput());
#endif
// 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;
}
void
ApplyThresholding(ImageType::Pointer image)
{
using BinaryThresholdImageFilterType = itk::BinaryThresholdImageFilter<ImageType, ImageType>;
BinaryThresholdImageFilterType::Pointer thresholdFilter = BinaryThresholdImageFilterType::New();
thresholdFilter->SetInput(image);
thresholdFilter->SetLowerThreshold(10);
thresholdFilter->SetUpperThreshold(50);
thresholdFilter->SetInsideValue(255);
thresholdFilter->SetOutsideValue(0);
thresholdFilter->InPlaceOn();
thresholdFilter->Update();
}
itk::BinaryThresholdImageFilter
Binarize an input image by thresholding.
Definition: itkBinaryThresholdImageFilter.h:139
itkImageFileReader.h
itkImage.h
itkImageToVTKImageFilter.h
itk::ImageFileReader
Data source that reads image data from a single file.
Definition: itkImageFileReader.h:75
itk::ImageToVTKImageFilter
Converts an ITK image into a VTK image and plugs a itk data pipeline to a VTK datapipeline.
Definition: itkImageToVTKImageFilter.h:47
itkBinaryThresholdImageFilter.h
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:86