ITK  5.1.0
Insight Toolkit
SphinxExamples/src/Filtering/ImageIntensity/AddTwoImages/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"
using ImageType = itk::Image<unsigned char, 2>;
static void
CreateImage1(ImageType::Pointer image);
static void
CreateImage2(ImageType::Pointer image);
int
main(int, char *[])
{
ImageType::Pointer image1 = ImageType::New();
CreateImage1(image1);
ImageType::Pointer image2 = ImageType::New();
CreateImage2(image2);
using AddImageFilterType = itk::AddImageFilter<ImageType, ImageType>;
AddImageFilterType::Pointer addFilter = AddImageFilterType::New();
addFilter->SetInput1(image1);
addFilter->SetInput2(image2);
addFilter->Update();
// Visualize first image
ConnectorType::Pointer connector1 = ConnectorType::New();
connector1->SetInput(image1);
vtkSmartPointer<vtkImageActor> actor1 = vtkSmartPointer<vtkImageActor>::New();
#if VTK_MAJOR_VERSION <= 5
actor1->SetInput(connector1->GetOutput());
#else
connector1->Update();
actor1->GetMapper()->SetInputData(connector1->GetOutput());
#endif
// Visualize first image
ConnectorType::Pointer connector2 = ConnectorType::New();
connector2->SetInput(image2);
vtkSmartPointer<vtkImageActor> actor2 = vtkSmartPointer<vtkImageActor>::New();
#if VTK_MAJOR_VERSION <= 5
actor2->SetInput(connector2->GetOutput());
#else
connector2->Update();
actor2->GetMapper()->SetInputData(connector2->GetOutput());
#endif
// Visualize joined image
ConnectorType::Pointer addConnector = ConnectorType::New();
addConnector->SetInput(addFilter->GetOutput());
vtkSmartPointer<vtkImageActor> addActor = vtkSmartPointer<vtkImageActor>::New();
#if VTK_MAJOR_VERSION <= 5
addActor->SetInput(addConnector->GetOutput());
#else
addConnector->Update();
addActor->GetMapper()->SetInputData(addConnector->GetOutput());
#endif
// 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, 0.33, 1.0 };
double centerViewport[4] = { 0.33, 0.0, 0.66, 1.0 };
double rightViewport[4] = { 0.66, 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> centerRenderer = vtkSmartPointer<vtkRenderer>::New();
renderWindow->AddRenderer(centerRenderer);
centerRenderer->SetViewport(centerViewport);
centerRenderer->SetBackground(.4, .5, .6);
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(actor1);
centerRenderer->AddActor(actor2);
rightRenderer->AddActor(addActor);
leftRenderer->ResetCamera();
centerRenderer->ResetCamera();
rightRenderer->ResetCamera();
renderWindow->Render();
vtkSmartPointer<vtkInteractorStyleImage> style = vtkSmartPointer<vtkInteractorStyleImage>::New();
interactor->SetInteractorStyle(style);
interactor->Start();
return EXIT_SUCCESS;
}
void
CreateImage1(ImageType::Pointer image)
{
// Create an image with 2 connected components
start[0] = 0;
start[1] = 0;
unsigned int NumRows = 200;
unsigned int NumCols = 300;
size[0] = NumRows;
size[1] = NumCols;
region.SetSize(size);
region.SetIndex(start);
image->SetRegions(region);
image->Allocate();
// Make a square
for (unsigned int r = 20; r < 80; r++)
{
for (unsigned int c = 20; c < 80; c++)
{
pixelIndex[0] = r;
pixelIndex[1] = c;
image->SetPixel(pixelIndex, 15);
}
}
}
void
CreateImage2(ImageType::Pointer image)
{
// Create an image with 2 connected components
start[0] = 0;
start[1] = 0;
unsigned int NumRows = 200;
unsigned int NumCols = 300;
size[0] = NumRows;
size[1] = NumCols;
region.SetSize(size);
region.SetIndex(start);
image->SetRegions(region);
image->Allocate();
// Make another square
for (unsigned int r = 40; r < 100; r++)
{
for (unsigned int c = 40; c < 100; c++)
{
pixelIndex[0] = r;
pixelIndex[1] = c;
image->SetPixel(pixelIndex, 15);
}
}
}
itk::GTest::TypedefsAndConstructors::Dimension2::SizeType
ImageBaseType::SizeType SizeType
Definition: itkGTestTypedefsAndConstructors.h:49
itkImage.h
itkImageToVTKImageFilter.h
itk::GTest::TypedefsAndConstructors::Dimension2::IndexType
ImageBaseType::IndexType IndexType
Definition: itkGTestTypedefsAndConstructors.h:50
itk::GTest::TypedefsAndConstructors::Dimension2::RegionType
ImageBaseType::RegionType RegionType
Definition: itkGTestTypedefsAndConstructors.h:54
itk::ImageToVTKImageFilter
Converts an ITK image into a VTK image and plugs a itk data pipeline to a VTK datapipeline.
Definition: itkImageToVTKImageFilter.h:47
itkRescaleIntensityImageFilter.h
itk::Size::SetSize
void SetSize(const SizeValueType val[VDimension])
Definition: itkSize.h:179
itkAddImageFilter.h
itk::AddImageFilter
Pixel-wise addition of two images.
Definition: itkAddImageFilter.h:80
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:86