|
|
| (3 intermediate revisions by one other user not shown) |
| Line 1: |
Line 1: |
| <div class="floatcenter">[[File:ITK_Examples_Baseline_ImageProcessing_TestConnectedComponentImageFilter.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| | {{warning|1=The media wiki content on this page is no longer maintained.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.}} |
| ==ConnectedComponentImageFilter.cxx==
| |
| <source lang="cpp">
| |
| #include "itkImage.h"
| |
| #include "itkImageFileReader.h"
| |
| #include "itkConnectedComponentImageFilter.h"
| |
| #include "itkRescaleIntensityImageFilter.h"
| |
| | |
| #include "QuickView.h"
| |
|
| |
| template <typename TImage>
| |
| static void CreateImage(TImage* const image);
| |
| | |
| int main( int argc, char *argv[])
| |
| { | |
| typedef itk::Image<unsigned char, 2> ImageType;
| |
| | |
| ImageType::Pointer image;
| |
| | |
| if(argc < 2)
| |
| {
| |
| image = ImageType::New();
| |
| CreateImage(image.GetPointer());
| |
| }
| |
| else
| |
| {
| |
| std::string fileName = argv[1];
| |
| typedef itk::ImageFileReader<ImageType> ReaderType;
| |
| ReaderType::Pointer reader = ReaderType::New();
| |
| reader->SetFileName(fileName);
| |
| reader->Update();
| |
| | |
| image = reader->GetOutput();
| |
| }
| |
| | |
| typedef itk::ConnectedComponentImageFilter <ImageType, ImageType >
| |
| ConnectedComponentImageFilterType;
| |
| | |
| ConnectedComponentImageFilterType::Pointer labelFilter
| |
| = ConnectedComponentImageFilterType::New ();
| |
| labelFilter->SetInput(image);
| |
| labelFilter->Update();
| |
| | |
| typedef itk::RescaleIntensityImageFilter< ImageType, ImageType > RescaleFilterType;
| |
| RescaleFilterType::Pointer rescaleFilter = RescaleFilterType::New();
| |
| rescaleFilter->SetOutputMinimum(0);
| |
| rescaleFilter->SetOutputMaximum(255);
| |
| rescaleFilter->SetInput(labelFilter->GetOutput());
| |
| | |
| QuickView viewer;
| |
| viewer.AddImage<ImageType>( image, false );
| |
| viewer.AddImage<ImageType>( rescaleFilter->GetOutput(), false );
| |
| viewer.Visualize();
| |
| | |
| return EXIT_SUCCESS;
| |
| }
| |
| | |
| template <typename TImage>
| |
| void CreateImage(TImage* const image)
| |
| {
| |
| // Create an image with 2 connected components
| |
| typename TImage::IndexType start = {{0,0}};
| |
| start[0] = 0;
| |
| start[1] = 0;
| |
| | |
| typename TImage::SizeType size;
| |
| unsigned int NumRows = 200;
| |
| unsigned int NumCols = 300; | |
| size[0] = NumRows;
| |
| size[1] = NumCols;
| |
| | |
| typename TImage::RegionType region(start, size);
| |
| | |
| image->SetRegions(region);
| |
| image->Allocate();
| |
| | |
| // Make a square
| |
| for(typename TImage::IndexValueType r = 20; r < 80; r++)
| |
| {
| |
| for(typename TImage::IndexValueType c = 30; c < 100; c++)
| |
| {
| |
| typename TImage::IndexType pixelIndex = {{r,c}};
| |
| | |
| image->SetPixel(pixelIndex, 255);
| |
| }
| |
| }
| |
| | |
| // Make another square
| |
| for(typename TImage::IndexValueType r = 100; r < 130; r++)
| |
| {
| |
| for(typename TImage::IndexValueType c = 115; c < 160; c++)
| |
| {
| |
| typename TImage::IndexType pixelIndex = {{r,c}};
| |
| | |
| image->SetPixel(pixelIndex, 255);
| |
| }
| |
| }
| |
| }
| |
| </source>
| |
| | |
| {{ITKVTKCMakeLists|ConnectedComponentImageFilter|}}
| |
