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| <div class="floatcenter">[[File:ITK_Examples_Baseline_ImageProcessing_TestConvolutionImageFilter.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| | {{warning|1=The media wiki content on this page is no longer maintained.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. |
| ==ConvolutionImageFilter.cxx==
| | }} |
| <source lang="cpp">
| |
| #include "itkImage.h"
| |
| #include "itkImageFileReader.h"
| |
| #include "itkConvolutionImageFilter.h"
| |
| #include "itkImageRegionIterator.h"
| |
| | |
| #include "QuickView.h"
| |
| | |
| typedef itk::Image<float, 2> ImageType;
| |
| | |
| static void CreateKernel(ImageType::Pointer kernel, unsigned int width);
| |
| | |
| int main(int argc, char * argv[])
| |
| {
| |
| // Verify command line arguments
| |
| if( argc < 2 )
| |
| {
| |
| std::cerr << "Usage: ";
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| std::cerr << argv[0] << "inputImageFile [width]" << std::endl;
| |
| return EXIT_FAILURE;
| |
| }
| |
| | |
| // Parse command line arguments
| |
| unsigned int width = 3;
| |
| if (argc > 2)
| |
| {
| |
| width = atoi(argv[2]);
| |
| }
| |
| | |
| ImageType::Pointer kernel = ImageType::New();
| |
| CreateKernel(kernel, width);
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|
| |
| typedef itk::ImageFileReader<ImageType> ReaderType;
| |
| typedef itk::ConvolutionImageFilter<ImageType> FilterType;
| |
| | |
| // Create and setup a reader
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| ReaderType::Pointer reader = ReaderType::New();
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| reader->SetFileName( argv[1] );
| |
| | |
| // Convolve image with kernel.
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| FilterType::Pointer convolutionFilter = FilterType::New();
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| convolutionFilter->SetInput(reader->GetOutput());
| |
| #if ITK_VERSION_MAJOR >= 4
| |
| convolutionFilter->SetKernelImage(kernel);
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| #else
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| convolutionFilter->SetImageKernelInput(kernel);
| |
| #endif
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| QuickView viewer;
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| viewer.AddImage<ImageType>(
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| reader->GetOutput(),true,
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| itksys::SystemTools::GetFilenameName(argv[1]));
| |
| | |
| std::stringstream desc;
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| desc << "ConvolutionFilter\n"
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| << "Kernel Witdh = " << width;
| |
| viewer.AddImage<ImageType>(
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| convolutionFilter->GetOutput(),
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| true,
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| desc.str());
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| viewer.Visualize();
| |
| | |
| return EXIT_SUCCESS; | |
| }
| |
| | |
| void CreateKernel(ImageType::Pointer kernel, unsigned int width)
| |
| {
| |
| ImageType::IndexType start;
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| start.Fill(0);
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| | |
| ImageType::SizeType size;
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| size.Fill(width);
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| | |
| ImageType::RegionType region;
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| region.SetSize(size);
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| region.SetIndex(start);
| |
| | |
| kernel->SetRegions(region);
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| kernel->Allocate();
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|
| |
| itk::ImageRegionIterator<ImageType> imageIterator(kernel, region);
| |
| | |
| while(!imageIterator.IsAtEnd())
| |
| {
| |
| //imageIterator.Set(255);
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| imageIterator.Set(1);
| |
| | |
| ++imageIterator;
| |
| }
| |
| }
| |
| </source>
| |
| | |
| {{ITKVTKCMakeLists|ConvolutionImageFilter|}}
| |
