|
|
| (4 intermediate revisions by one other user not shown) |
| Line 1: |
Line 1: |
| <div class="floatcenter">[[File:ITK_Examples_Baseline_SimpleOperations_TestSetPixels.png]]</div>
| | {{warning|1=The media wiki content on this page is no longer maintained. The examples presented on the https://itk.org/Wiki/* pages likely require ITK version 4.13 or earlier releases. In many cases, the examples on this page no longer conform to the best practices for modern ITK versions. |
| This example demonstrates how to set the value of individual pixels in an image.
| | }} |
|
| |
|
| ==SetPixels.cxx==
| | [https://itk.org/ITKExamples[ITK Sphinx Examples]] |
| <source lang="cpp">
| |
| #include "itkImage.h"
| |
| | |
| #include <itkImageToVTKImageFilter.h>
| |
| | |
| #include "vtkImageViewer.h"
| |
| #include "vtkRenderWindowInteractor.h"
| |
| #include "vtkSmartPointer.h"
| |
| #include "vtkImageActor.h"
| |
| #include "vtkInteractorStyleImage.h"
| |
| #include "vtkRenderer.h"
| |
| | |
| int main(int, char *[])
| |
| {
| |
| typedef itk::Image< unsigned char, 2 > ImageType;
| |
| | |
| ImageType::RegionType region;
| |
| ImageType::IndexType start;
| |
| start[0] = 0;
| |
| start[1] = 0;
| |
| | |
| ImageType::SizeType size;
| |
| size[0] = 200;
| |
| size[1] = 300;
| |
| | |
| region.SetSize(size);
| |
| region.SetIndex(start);
| |
| | |
| ImageType::Pointer image = ImageType::New();
| |
| image->SetRegions(region);
| |
| image->Allocate();
| |
| | |
| // Set pixels in a square to one value
| |
| for(unsigned int r = 20; r < 80; r++)
| |
| {
| |
| for(unsigned int c = 30; c < 100; c++)
| |
| {
| |
| ImageType::IndexType pixelIndex;
| |
| pixelIndex[0] = r;
| |
| pixelIndex[1] = c;
| |
| | |
| image->SetPixel(pixelIndex, 255);
| |
| }
| |
| }
| |
| | |
| // Set pixels in a different square to a different value
| |
| for(unsigned int r = 100; r < 130; r++)
| |
| {
| |
| for(unsigned int c = 115; c < 160; c++)
| |
| {
| |
| ImageType::IndexType pixelIndex;
| |
| pixelIndex[0] = r;
| |
| pixelIndex[1] = c;
| |
| | |
| image->SetPixel(pixelIndex, 125);
| |
| }
| |
| }
| |
| | |
| typedef itk::ImageToVTKImageFilter<ImageType> ConnectorType;
| |
| ConnectorType::Pointer connector = ConnectorType::New();
| |
| connector->SetInput(image);
| |
|
| |
| vtkSmartPointer<vtkImageActor> actor =
| |
| vtkSmartPointer<vtkImageActor>::New();
| |
| actor->SetInput(connector->GetOutput());
| |
| | |
| // 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);
| |
| | |
| renderer->AddActor(actor);
| |
| | |
| renderer->ResetCamera();
| |
| | |
| renderWindow->Render();
| |
| | |
| vtkSmartPointer<vtkInteractorStyleImage> style =
| |
| vtkSmartPointer<vtkInteractorStyleImage>::New();
| |
| | |
| interactor->SetInteractorStyle(style);
| |
| | |
| interactor->Start();
| |
| | |
| return EXIT_SUCCESS;
| |
| }
| |
| </source>
| |
| | |
| ==CMakeLists.txt==
| |
| <source lang="cmake">
| |
| cmake_minimum_required(VERSION 2.6)
| |
| | |
| PROJECT(SetPixels)
| |
| | |
| 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(SetPixels SetPixels.cxx)
| |
| TARGET_LINK_LIBRARIES(SetPixels
| |
| vtkHybrid
| |
| ITKIO ITKBasicFilters ITKCommon
| |
| )
| |
| | |
| </source>
| |
