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| ==MutualInformationImageToImageFilter.cxx== | | {{warning|1=The media wiki content on this page is no longer maintained.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 "itkMutualInformationImageToImageMetric.h"
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| #include "itkRandomImageSource.h"
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| #include "itkTranslationTransform.h"
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| #include "itkLinearInterpolateImageFunction.h"
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| | |
| //typedef itk::Image< unsigned char, 2> ImageType;
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| typedef itk::Image< float, 2> ImageType;
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| | |
| int main( int argc, char *argv[] )
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| {
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| itk::Size<2> size;
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| size.Fill(10);
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|
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| itk::RandomImageSource<ImageType>::Pointer randomImageSource1 = itk::RandomImageSource<ImageType>::New();
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| randomImageSource1->SetNumberOfThreads(1); // to produce non-random results
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| randomImageSource1->SetSize(size);
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| randomImageSource1->SetMin(0);
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| randomImageSource1->SetMax(255);
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| randomImageSource1->Update();
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|
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| ImageType::Pointer fixedImage = randomImageSource1->GetOutput();
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|
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| itk::RandomImageSource<ImageType>::Pointer randomImageSource2 = itk::RandomImageSource<ImageType>::New();
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| randomImageSource2->SetNumberOfThreads(1); // to produce non-random results
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| randomImageSource2->SetSize(size);
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| randomImageSource2->SetMin(0);
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| randomImageSource2->SetMax(255);
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| randomImageSource2->Update();
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| | |
| //ImageType::Pointer movingImage = randomImageSource2->GetOutput();
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| ImageType::Pointer movingImage = randomImageSource1->GetOutput();
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|
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| typedef itk::TranslationTransform<double, 2> TranslationTransformType; // This cannot be float for some reason?
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| TranslationTransformType::Pointer transform = TranslationTransformType::New();
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|
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| typedef itk::MutualInformationImageToImageMetric<ImageType, ImageType > MetricType;
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| | |
| MetricType::Pointer metric = MetricType::New();
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|
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| metric->SetTransform(transform);
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| | |
| metric->SetFixedImageStandardDeviation( 4 );
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| metric->SetMovingImageStandardDeviation( 4 );
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| metric->SetFixedImage(fixedImage);
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| metric->SetMovingImage(movingImage);
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|
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| metric->SetFixedImageRegion(fixedImage->GetLargestPossibleRegion());
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| | |
| itk::LinearInterpolateImageFunction<ImageType, double>::Pointer interpolator = itk::LinearInterpolateImageFunction<ImageType, double>::New();
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| interpolator->SetInputImage(fixedImage);
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| metric->SetInterpolator(interpolator);
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|
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| TranslationTransformType::ParametersType parameters;
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| parameters.SetSize(2);
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| parameters.Fill(0);
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| std::cout << "parameters: " << parameters << std::endl;
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|
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| MetricType::MeasureType value = metric->GetValue(parameters);
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|
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| std::cout << "Value: " << value << std::endl;
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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|MutualInformationImageToImageFilter}}
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