|
|
| (3 intermediate revisions by one other user not shown) |
| Line 1: |
Line 1: |
| ==LabelContourImageFilter.cxx==
| | {{warning|1=The media wiki content on this page is no longer maintained.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.}} |
| <source lang="cpp">
| |
| #include "itkImage.h"
| |
| #include "itkImageFileReader.h"
| |
| #include "itkLabelContourImageFilter.h"
| |
| #include "itkConnectedComponentImageFilter.h"
| |
| #include "itkScalarToRGBColormapImageFilter.h"
| |
| | |
| #include "itksys/SystemTools.hxx"
| |
| #include <sstream>
| |
| | |
| #include "QuickView.h"
| |
| | |
| typedef unsigned char PixelType;
| |
| typedef itk::RGBPixel<unsigned char> RGBPixelType;
| |
| typedef itk::Image<PixelType, 2> ImageType;
| |
| typedef itk::Image<RGBPixelType, 2> RGBImageType;
| |
| | |
| static void CreateImage(ImageType::Pointer image);
| |
| | |
| int main(int argc, char *argv[])
| |
| { | |
| // Create or read an image
| |
| ImageType::Pointer image;
| |
| if( argc < 2 )
| |
| {
| |
| image = ImageType::New();
| |
| CreateImage(image.GetPointer());
| |
| }
| |
| else
| |
| {
| |
| typedef itk::ImageFileReader<ImageType> ReaderType;
| |
| ReaderType::Pointer reader =
| |
| ReaderType::New();
| |
| reader->SetFileName(argv[1]);
| |
| reader->Update();
| |
| | |
| image = reader->GetOutput();
| |
| }
| |
| | |
| // Generate connected components
| |
| typedef itk::ConnectedComponentImageFilter <ImageType, ImageType >
| |
| ConnectedComponentImageFilterType;
| |
| ConnectedComponentImageFilterType::Pointer connectedComponentImageFilter
| |
| = ConnectedComponentImageFilterType::New ();
| |
| connectedComponentImageFilter->SetInput(image);
| |
| | |
| // Generate contours for each component
| |
| typedef itk::LabelContourImageFilter<ImageType, ImageType> LabelContourImageFilterType;
| |
| LabelContourImageFilterType::Pointer labelContourImageFilter =
| |
| LabelContourImageFilterType::New();
| |
| labelContourImageFilter->SetInput(connectedComponentImageFilter->GetOutput());
| |
| | |
| typedef itk::ScalarToRGBColormapImageFilter<ImageType, RGBImageType> RGBFilterType;
| |
| RGBFilterType::Pointer rgbFilter = RGBFilterType::New();
| |
| rgbFilter->SetInput( labelContourImageFilter->GetOutput() );
| |
| rgbFilter->SetColormap( RGBFilterType::Jet );
| |
| | |
| QuickView viewer;
| |
| viewer.AddImage(
| |
| image.GetPointer(),true,
| |
| argc > 1 ? itksys::SystemTools::GetFilenameName(argv[1]) : "Generated image");
| |
| | |
| std::stringstream desc;
| |
| desc << "LabelContourImageFilter";
| |
| viewer.AddRGBImage(
| |
| rgbFilter->GetOutput(),
| |
| true,
| |
| desc.str());
| |
| | |
| viewer.Visualize();
| |
| | |
| return EXIT_SUCCESS;
| |
| }
| |
| | |
| void CreateImage(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 = 30; c < 100; c++)
| |
| {
| |
| ImageType::IndexType pixelIndex;
| |
| pixelIndex[0] = r;
| |
| pixelIndex[1] = c;
| |
| | |
| image->SetPixel(pixelIndex, 255);
| |
| }
| |
| }
| |
| | |
| // Make another square
| |
| 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, 255);
| |
| }
| |
| }
| |
| }
| |
| </source>
| |
| | |
| {{ITKCMakeLists|{{SUBPAGENAME}}}}
| |
