ITK/Examples/ImageProcessing/SubtractImageFilter: Difference between revisions
From KitwarePublic
Jump to navigationJump to search
Daviddoria (talk | contribs) (Created page with "==SubtractImageFilter.cxx== <source lang="cpp"> #include "itkImage.h" #include "itkImageFileWriter.h" #include "itkRescaleIntensityImageFilter.h" #include "itkSubtractImageFilter...") |
|||
Line 6: | Line 6: | ||
#include "itkSubtractImageFilter.h" | #include "itkSubtractImageFilter.h" | ||
#include | #include "itkImageToVTKImageFilter.h" | ||
#include "vtkImageViewer.h" | #include "vtkImageViewer.h" | ||
Line 17: | Line 17: | ||
typedef itk::Image<unsigned char, 2> ImageType; | typedef itk::Image<unsigned char, 2> ImageType; | ||
void CreateImage1(ImageType::Pointer image); | static void CreateImage1(ImageType::Pointer image); | ||
void CreateImage2(ImageType::Pointer image); | static void CreateImage2(ImageType::Pointer image); | ||
int main(int, char *[]) | int main(int, char *[]) | ||
Line 29: | Line 29: | ||
typedef itk::SubtractImageFilter <ImageType, ImageType > | typedef itk::SubtractImageFilter <ImageType, ImageType > | ||
SubtractImageFilterType; | |||
SubtractImageFilterType::Pointer subtractFilter | SubtractImageFilterType::Pointer subtractFilter | ||
= SubtractImageFilterType::New (); | |||
subtractFilter->SetInput1(image1); | subtractFilter->SetInput1(image1); | ||
subtractFilter->SetInput2(image2); | subtractFilter->SetInput2(image2); | ||
Line 139: | Line 139: | ||
// Make a square | // Make a square | ||
for(unsigned int r = 20; r < 80; r++) | for(unsigned int r = 20; r < 80; r++) | ||
{ | |||
for(unsigned int c = 20; c < 80; c++) | |||
{ | { | ||
ImageType::IndexType pixelIndex; | |||
pixelIndex[0] = r; | |||
pixelIndex[1] = c; | |||
image->SetPixel(pixelIndex, 15); | |||
} | } | ||
} | |||
} | } | ||
Line 174: | Line 174: | ||
// Make another square | // Make another square | ||
for(unsigned int r = 40; r < 100; r++) | for(unsigned int r = 40; r < 100; r++) | ||
{ | |||
for(unsigned int c = 40; c < 100; c++) | |||
{ | { | ||
ImageType::IndexType pixelIndex; | |||
pixelIndex[0] = r; | |||
pixelIndex[1] = c; | |||
image->SetPixel(pixelIndex, 15); | |||
} | } | ||
} | |||
} | } | ||
</source> | </source> |
Revision as of 05:25, 16 November 2010
SubtractImageFilter.cxx
<source lang="cpp">
- include "itkImage.h"
- include "itkImageFileWriter.h"
- include "itkRescaleIntensityImageFilter.h"
- include "itkSubtractImageFilter.h"
- include "itkImageToVTKImageFilter.h"
- include "vtkImageViewer.h"
- include "vtkRenderWindowInteractor.h"
- include "vtkSmartPointer.h"
- include "vtkImageActor.h"
- include "vtkInteractorStyleImage.h"
- include "vtkRenderer.h"
typedef itk::Image<unsigned char, 2> ImageType;
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);
typedef itk::SubtractImageFilter <ImageType, ImageType > SubtractImageFilterType;
SubtractImageFilterType::Pointer subtractFilter = SubtractImageFilterType::New (); subtractFilter->SetInput1(image1); subtractFilter->SetInput2(image2); subtractFilter->Update();
// Visualize first image typedef itk::ImageToVTKImageFilter<ImageType> ConnectorType; ConnectorType::Pointer connector1 = ConnectorType::New(); connector1->SetInput(image1);
vtkSmartPointer<vtkImageActor> actor1 = vtkSmartPointer<vtkImageActor>::New(); actor1->SetInput(connector1->GetOutput());
// Visualize second image typedef itk::ImageToVTKImageFilter<ImageType> ConnectorType; ConnectorType::Pointer connector2 = ConnectorType::New(); connector2->SetInput(image2);
vtkSmartPointer<vtkImageActor> actor2 = vtkSmartPointer<vtkImageActor>::New(); actor2->SetInput(connector2->GetOutput());
// Visualize subtracted image ConnectorType::Pointer subtractConnector = ConnectorType::New(); subtractConnector->SetInput(subtractFilter->GetOutput());
vtkSmartPointer<vtkImageActor> subtractActor = vtkSmartPointer<vtkImageActor>::New(); subtractActor->SetInput(subtractConnector->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(subtractActor);
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 ImageType::RegionType region; ImageType::IndexType start; start[0] = 0; start[1] = 0;
ImageType::SizeType size; 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++) { ImageType::IndexType pixelIndex; pixelIndex[0] = r; pixelIndex[1] = c;
image->SetPixel(pixelIndex, 15); } }
}
void CreateImage2(ImageType::Pointer image)
{
// Create an image with 2 connected components ImageType::RegionType region; ImageType::IndexType start; start[0] = 0; start[1] = 0;
ImageType::SizeType size; 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++) { ImageType::IndexType pixelIndex; pixelIndex[0] = r; pixelIndex[1] = c;
image->SetPixel(pixelIndex, 15); } }
} </source>
CMakeLists.txt
<source lang="cmake"> cmake_minimum_required(VERSION 2.6)
PROJECT(SubtractImageFilter)
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(SubtractImageFilter SubtractImageFilter.cxx) TARGET_LINK_LIBRARIES(SubtractImageFilter vtkHybrid ITKBasicFilters ITKCommon ITKIO) </source>