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| error: no match for ‘operator!=’ in ‘((itk::UnaryFunctorImageFilter<itk::Image<float, 2u>, itk::Image<float, 2u>, itk::GaussianBlurImageFunction<itk::Image<float, 2u>, double> >*)this)->itk::UnaryFunctorImageFilter<itk::Image<float, 2u>, itk::Image<float, 2u>, itk::GaussianBlurImageFunction<itk::Image<float, 2u>, double> >::m_Functor != functor’
| | {{warning|1=The media wiki content on this page is no longer maintained.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. |
| | | }} |
| ==GaussianBlurImageFunctionFilter.cxx==
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| <source lang="cpp">
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| #include "itkGaussianBlurImageFunction.h"
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| #include "itkImage.h"
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| #include "itkImageFileReader.h"
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| #include "itkImageFileWriter.h"
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| #include "itkImageRegionIterator.h"
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| #include "itkUnaryFunctorImageFilter.h"
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| | |
| int main( int argc, char * argv[] )
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| {
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| // Verify arguments
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| if( argc < 5 )
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| {
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| std::cerr << "Usage: " << std::endl;
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| std::cerr << argv[0] << " inputImageFile outputImageFile sigma maxKernelWidth" << std::endl;
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| return EXIT_FAILURE;
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| }
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|
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| // Parse arguments
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| std::string inputFileName = argv[1];
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| std::string outputFileName = argv[2];
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| float sigma = 0;
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| {
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| std::stringstream ss(argv[3]);
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| ss >> sigma;
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| }
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| int maxKernelWidth = 0;
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| {
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| std::stringstream ss(argv[4]);
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| ss >> maxKernelWidth;
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| }
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|
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| typedef itk::Image< float, 2 > ImageType;
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| typedef itk::ImageFileReader< ImageType > ReaderType;
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| typedef itk::ImageRegionIterator< ImageType > IteratorType;
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| typedef itk::ImageRegionConstIterator< ImageType > ConstIteratorType;
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|
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| ReaderType::Pointer reader = ReaderType::New();
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| reader->SetFileName( inputFileName );
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| reader->Update();
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| | |
| /*
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| // This manually creates the output and computes the values at each pixel
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| const ImageType * inputImage = reader->GetOutput();
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| | |
| ImageType::RegionType region = inputImage->GetBufferedRegion();
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|
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| ImageType::Pointer output = ImageType::New();
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|
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| output->SetRegions( region );
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| output->SetOrigin( inputImage->GetOrigin() );
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| output->SetSpacing( inputImage->GetSpacing() );
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| output->Allocate();
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|
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| ConstIteratorType it( inputImage, region );
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| IteratorType out( output, region );
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|
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| it.GoToBegin();
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| out.GoToBegin();
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|
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| while( !it.IsAtEnd() ) | |
| {
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| out.Set( gaussianFunction->EvaluateAtIndex(it.GetIndex() ) );
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| ++it;
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| ++out;
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| }
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| */
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|
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| typedef itk::GaussianBlurImageFunction< ImageType > GaussianBlurImageFunctionType;
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| // SetFunctor seems to need an actual object (not a pointer), but we can't create one like this:
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| //GaussianBlurImageFunctionType gaussianFunction;
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|
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| GaussianBlurImageFunctionType::Pointer gaussianFunction = GaussianBlurImageFunctionType::New();
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| //gaussianFunction->SetInputImage( reader->GetOutput() ); // Do we need to do this since we are going to do unaryFunctor->SetInput?
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| GaussianBlurImageFunctionType::ErrorArrayType setError;
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| setError.Fill( 0.01 );
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| gaussianFunction->SetMaximumError( setError );
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| gaussianFunction->SetSigma( sigma );
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| gaussianFunction->SetMaximumKernelWidth( maxKernelWidth );
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|
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| typedef itk::UnaryFunctorImageFilter<ImageType,ImageType,
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| GaussianBlurImageFunctionType> FilterType;
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| FilterType::Pointer filter = FilterType::New();
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| filter->SetInput(reader->GetOutput());
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| filter->SetFunctor(*gaussianFunction);
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| filter->Update();
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| | |
| typedef itk::ImageFileWriter < ImageType > WriterType;
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| WriterType::Pointer writer = WriterType::New();
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| writer->SetFileName(outputFileName);
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| writer->SetInput(filter->GetOutput());
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| writer->Update();
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|
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| return EXIT_SUCCESS;
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| }
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| | |
| </source>
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| | |
| | |
| {{ITKCMakeLists|GaussianBlurImageFunctionFilter}}
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