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| ==NeighborhoodOperatorImageFilter.cxx== | | {{warning|1=The media wiki content on this page is no longer maintained.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"
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| #include "itkNeighborhoodOperatorImageFilter.h"
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| #include "itkSobelOperator.h"
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| #include "itkImageFileWriter.h"
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| #include "itkRescaleIntensityImageFilter.h"
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| | |
| typedef itk::Image<float, 2> FloatImageType;
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| | |
| void CreateImage(FloatImageType::Pointer image);
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| void CastRescaleAndWrite(FloatImageType::Pointer image, const std::string& filename);
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| | |
| int main(int, char*[])
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| {
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| FloatImageType::Pointer image = FloatImageType::New();
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| CreateImage(image);
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| CastRescaleAndWrite(image, "input.png");
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|
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| typedef itk::SobelOperator<float, 2> SobelOperatorType;
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| SobelOperatorType sobelOperator;
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| itk::Size<2> radius;
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| radius.Fill(1); // a radius of 1x1 creates a 3x3 operator
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| sobelOperator.SetDirection(0); // Create the operator for the X axis derivative
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| sobelOperator.CreateToRadius(radius);
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|
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| typedef itk::NeighborhoodOperatorImageFilter<FloatImageType, FloatImageType> NeighborhoodOperatorImageFilterType;
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| NeighborhoodOperatorImageFilterType::Pointer filter = NeighborhoodOperatorImageFilterType::New();
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| filter->SetOperator(sobelOperator);
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| filter->SetInput(image);
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| filter->Update();
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| CastRescaleAndWrite(filter->GetOutput(), "output.png");
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|
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| return EXIT_SUCCESS;
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| }
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| | |
| void CreateImage(FloatImageType::Pointer image)
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| {
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| FloatImageType::IndexType start;
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| start.Fill(0);
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| FloatImageType::SizeType size;
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| size.Fill(100);
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| FloatImageType::RegionType region(start,size); | |
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| image->SetRegions(region);
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| image->Allocate();
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| image->FillBuffer(0);
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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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| FloatImageType::IndexType 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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| | |
| void CastRescaleAndWrite(FloatImageType::Pointer image, const std::string& filename)
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| {
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| typedef itk::Image<unsigned char, 2> UnsignedCharImageType;
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| typedef itk::RescaleIntensityImageFilter<FloatImageType, UnsignedCharImageType> RescaleFilterType;
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| RescaleFilterType::Pointer rescaleFilter = RescaleFilterType::New();
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| rescaleFilter->SetInput(image);
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| rescaleFilter->SetOutputMinimum(0);
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| rescaleFilter->SetOutputMaximum(255);
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| rescaleFilter->Update();
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|
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| typedef itk::ImageFileWriter<UnsignedCharImageType> WriterType;
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| WriterType::Pointer writer = WriterType::New();
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| writer->SetFileName(filename);
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| writer->SetInput(rescaleFilter->GetOutput());
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| writer->Update();
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| | |
| }
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| </source>
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| {{ITKCMakeLists|{{SUBPAGENAME}}}}
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