ITK  5.1.0
Insight Toolkit
SphinxExamples/src/Core/Common/FindMaxAndMinInImage/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 "vtkImageViewer.h"
#include "vtkImageMapper3D.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkSmartPointer.h"
#include "vtkImageActor.h"
#include "vtkInteractorStyleImage.h"
#include "vtkRenderer.h"
#include "vtkSphereSource.h"
#include "vtkPolyDataMapper.h"
#include "vtkActor.h"
#include "vtkProperty.h"
using ImageType = itk::Image<unsigned char, 2>;
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();
using ImageCalculatorFilterType = itk::MinimumMaximumImageCalculator<ImageType>;
ImageCalculatorFilterType::Pointer imageCalculatorFilter = ImageCalculatorFilterType::New();
imageCalculatorFilter->SetImage(reader->GetOutput());
imageCalculatorFilter->Compute();
ConnectorType::Pointer originalConnector = ConnectorType::New();
originalConnector->SetInput(reader->GetOutput());
vtkSmartPointer<vtkImageActor> originalActor = vtkSmartPointer<vtkImageActor>::New();
#if VTK_MAJOR_VERSION <= 5
originalActor->SetInput(originalConnector->GetOutput());
#else
originalConnector->Update();
originalActor->GetMapper()->SetInputData(originalConnector->GetOutput());
#endif
vtkSmartPointer<vtkSphereSource> minimumSphereSource = vtkSmartPointer<vtkSphereSource>::New();
ImageType::IndexType minimumLocation = imageCalculatorFilter->GetIndexOfMinimum();
minimumSphereSource->SetCenter(minimumLocation[0], minimumLocation[1], 0);
minimumSphereSource->SetRadius(10);
vtkSmartPointer<vtkPolyDataMapper> minimumMapper = vtkSmartPointer<vtkPolyDataMapper>::New();
minimumMapper->SetInputConnection(minimumSphereSource->GetOutputPort());
vtkSmartPointer<vtkActor> minimumActor = vtkSmartPointer<vtkActor>::New();
minimumActor->SetMapper(minimumMapper);
minimumActor->GetProperty()->SetColor(0, 1, 0);
vtkSmartPointer<vtkSphereSource> maximumSphereSource = vtkSmartPointer<vtkSphereSource>::New();
maximumSphereSource->SetRadius(10);
ImageType::IndexType maximumLocation = imageCalculatorFilter->GetIndexOfMaximum();
maximumSphereSource->SetCenter(maximumLocation[0], maximumLocation[1], 0);
vtkSmartPointer<vtkPolyDataMapper> maximumMapper = vtkSmartPointer<vtkPolyDataMapper>::New();
maximumMapper->SetInputConnection(maximumSphereSource->GetOutputPort());
vtkSmartPointer<vtkActor> maximumActor = vtkSmartPointer<vtkActor>::New();
maximumActor->SetMapper(maximumMapper);
maximumActor->GetProperty()->SetColor(1, 0, 0);
// Visualize
vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New();
vtkSmartPointer<vtkRenderWindowInteractor> interactor = vtkSmartPointer<vtkRenderWindowInteractor>::New();
interactor->SetRenderWindow(renderWindow);
vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
renderWindow->AddRenderer(renderer);
// Add the sphere to the left and the cube to the right
renderer->AddActor(originalActor);
renderer->AddActor(minimumActor);
renderer->AddActor(maximumActor);
renderer->ResetCamera();
renderWindow->Render();
vtkSmartPointer<vtkInteractorStyleImage> style = vtkSmartPointer<vtkInteractorStyleImage>::New();
interactor->SetInteractorStyle(style);
interactor->Start();
return EXIT_SUCCESS;
}
itk::MinimumMaximumImageCalculator
Computes the minimum and the maximum intensity values of an image.
Definition: itkMinimumMaximumImageCalculator.h:44
itkImageFileReader.h
itkImage.h
itkMinimumMaximumImageCalculator.h
itkImageToVTKImageFilter.h
itk::ImageFileReader
Data source that reads image data from a single file.
Definition: itkImageFileReader.h:75
itk::GTest::TypedefsAndConstructors::Dimension2::IndexType
ImageBaseType::IndexType IndexType
Definition: itkGTestTypedefsAndConstructors.h:50
itk::ImageToVTKImageFilter
Converts an ITK image into a VTK image and plugs a itk data pipeline to a VTK datapipeline.
Definition: itkImageToVTKImageFilter.h:47
itkImageFileWriter.h
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:86