ITK  5.1.0
Insight Toolkit
SphinxExamples/src/Segmentation/KLMRegionGrowing/BasicRegionGrowing/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 "vtkImageViewer.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkSmartPointer.h"
#include "vtkImageActor.h"
#include "vtkInteractorStyleImage.h"
#include "vtkRenderer.h"
using PixelType = int;
constexpr size_t Dimension = 3;
static void
CreateImage(ImageType::Pointer image);
int
main(int argc, char * argv[])
{
ImageType::Pointer image = ImageType::New();
CreateImage(image);
using RegionGrowImageFilterType = itk::RegionGrowImageFilter<ImageType, ImageType>;
RegionGrowImageFilterType::Pointer regionGrow = RegionGrowImageFilterType::New();
float lower = 95.0;
float upper = 105.0;
regionGrow->SetLower(lower);
regionGrow->SetUpper(upper);
regionGrow->SetReplaceValue(255);
// Seed 1: (25, 35)
seed1[0] = 25;
seed1[1] = 35;
regionGrow->SetSeed(seed1);
regionGrow->SetInput(image);
// Seed 2: (110, 120)
seed2[0] = 110;
seed2[1] = 120;
regionGrow->SetSeed(seed2);
regionGrow->SetReplaceValue(150);
regionGrow->SetInput(image);
// Visualize
ConnectorType::Pointer connector2 = ConnectorType::New();
connector2->SetInput(image2);
vtkSmartPointer<vtkImageActor> actor2 = vtkSmartPointer<vtkImageActor>::New();
actor2->SetInput(connector2->GetOutput());
// Visualize joined image
ConnectorType::Pointer addConnector = ConnectorType::New();
addConnector->SetInput(addFilter->GetOutput());
vtkSmartPointer<vtkImageActor> addActor = vtkSmartPointer<vtkImageActor>::New();
addActor->SetInput(addConnector->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, 0.33, 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
CreateImage(ImageType::Pointer image)
{
// Create an image with 2 connected components
start[0] = 0;
start[1] = 0;
size[0] = 200;
size[1] = 300;
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 = 30; c < 100; c++)
{
pixelIndex[0] = r;
pixelIndex[1] = c;
image->SetPixel(pixelIndex, 100.0);
}
}
// Make another square
for (unsigned int r = 100; r < 130; r++)
{
for (unsigned int c = 115; c < 160; c++)
{
pixelIndex[0] = r;
pixelIndex[1] = c;
image->SetPixel(pixelIndex, 100.0);
}
}
}
itkRegionGrowImageFilter.h
itk::GTest::TypedefsAndConstructors::Dimension2::SizeType
ImageBaseType::SizeType SizeType
Definition: itkGTestTypedefsAndConstructors.h:49
itkImage.h
itkCastImageFilter.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
itkImageFileWriter.h
itk::Size::SetSize
void SetSize(const SizeValueType val[VDimension])
Definition: itkSize.h:179
itk::RegionGrowImageFilter
Base class for RegionGrowImageFilter object.
Definition: itkRegionGrowImageFilter.h:85
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:86
itk::GTest::TypedefsAndConstructors::Dimension2::Dimension
constexpr unsigned int Dimension
Definition: itkGTestTypedefsAndConstructors.h:44