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| ==SobelEdgeDetectionImageFilter.cxx== | | {{warning|1=The media wiki content on this page is no longer maintained.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 "itkImageFileWriter.h"
| |
| #include "itkSobelEdgeDetectionImageFilter.h"
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| #include "itkRescaleIntensityImageFilter.h"
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|
| |
|
| typedef itk::Image<unsigned char, 2> UnsignedCharImageType;
| | [https://itk.org/ITKExamples[ITK Sphinx Examples]] |
| typedef itk::Image<float, 2> FloatImageType;
| |
| | |
| static void CreateImage(UnsignedCharImageType::Pointer);
| |
| | |
| int main(int argc, char *argv[])
| |
| {
| |
| UnsignedCharImageType::Pointer image = UnsignedCharImageType::New();
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| CreateImage(image);
| |
| | |
| typedef itk::SobelEdgeDetectionImageFilter <UnsignedCharImageType, FloatImageType>
| |
| SobelEdgeDetectionImageFilterType;
| |
| SobelEdgeDetectionImageFilterType::Pointer sobelFilter
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| = SobelEdgeDetectionImageFilterType::New();
| |
| sobelFilter->SetInput(image);
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| sobelFilter->Update();
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| | |
| typedef itk::RescaleIntensityImageFilter< FloatImageType, UnsignedCharImageType > RescaleFilterType;
| |
| RescaleFilterType::Pointer rescaleFilter = RescaleFilterType::New();
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| rescaleFilter->SetInput(sobelFilter->GetOutput());
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| rescaleFilter->SetOutputMinimum(0);
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| rescaleFilter->SetOutputMaximum(255);
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| rescaleFilter->Update();
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| | |
| typedef itk::ImageFileWriter< UnsignedCharImageType > WriterType;
| |
| WriterType::Pointer writer = WriterType::New();
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| writer->SetFileName("output.png");
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| writer->SetInput(rescaleFilter->GetOutput());
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| writer->Update();
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| | |
| return EXIT_SUCCESS;
| |
| }
| |
| | |
| void CreateImage(UnsignedCharImageType::Pointer image)
| |
| {
| |
| itk::Index<2> start;
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| start.Fill(0);
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| | |
| itk::Size<2> size;
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| size.Fill(100);
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| | |
| itk::ImageRegion<2> region(start, size);
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| image->SetRegions(region);
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| image->Allocate();
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| | |
| // Make a square
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| for(unsigned int r = 20; r < 80; r++)
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| {
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| for(unsigned int c = 20; c < 80; c++)
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| {
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| itk::Index<2> pixelIndex;
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| pixelIndex[0] = r;
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| pixelIndex[1] = c;
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| | |
| image->SetPixel(pixelIndex, 15);
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| }
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| }
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| }
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| </source>
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| | |
| {{ITKCMakeLists|SobelEdgeDetectionImageFilter}}
| |
