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| ==ZeroCrossingImageFilter.cxx== | | {{warning|1=The media wiki content on this page is no longer maintained.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 "itkImageFileWriter.h"
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| #include "itkZeroCrossingImageFilter.h"
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| | |
| typedef itk::Image<float, 2> FloatImageType;
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| | |
| static void CreateImage(FloatImageType::Pointer image);
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| | |
| int main(int argc, char *argv[])
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| {
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| typedef itk::Image<unsigned char, 2> UnsignedCharImageType;
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| | |
| FloatImageType::Pointer image = FloatImageType::New();
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| CreateImage(image);
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| | |
| typedef itk::ZeroCrossingImageFilter< FloatImageType, UnsignedCharImageType > ZeroCrossingImageFilterType;
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| ZeroCrossingImageFilterType::Pointer zeroCrossingImageFilter = ZeroCrossingImageFilterType::New();
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| zeroCrossingImageFilter->SetInput(image);
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| zeroCrossingImageFilter->SetBackgroundValue(0);
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| zeroCrossingImageFilter->SetForegroundValue(255);
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| zeroCrossingImageFilter->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("output.png");
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| writer->SetInput(zeroCrossingImageFilter->GetOutput());
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| writer->Update();
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| | |
| return 0;
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| }
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| | |
| void CreateImage(FloatImageType::Pointer image)
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| {
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| 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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| image->FillBuffer(-1);
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|
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| // Make half of the image negative
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| for(unsigned int i = 0; i < 100; ++i)
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| {
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| for(unsigned int j = 0; j < 50; ++j)
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| {
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| itk::Index<2> index;
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| index[0] = i;
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| index[1] = j;
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| image->SetPixel(index, 1);
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| }
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| }
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| }
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| | |
| </source>
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| | |
| {{ITKCMakeLists|ZeroCrossingImageFilter|}}
| |
