[ITK-users] MutualInformationImageToImageMetric without transformation

[jan]

Thanks Matt,

this example was exactly what I was searching in the first place.

My new minimal version is now this:

    typedef itk::MutualInformationImageToImageMetric< UChar2DImageType,
UChar2DImageType > MetricType;
    typedef itk::LinearInterpolateImageFunction< UChar2DImageType, double >
InterpolatorType;
    typedef itk::IdentityTransform< double, 2 > TransformType;

    MetricType::Pointer metric = MetricType::New();
    TransformType::Pointer transform = TransformType::New();
    InterpolatorType::Pointer interpolator = InterpolatorType::New();

    metric->SetFixedImage( fixedImage );
    metric->SetMovingImage( movingImage );
    metric->SetFixedImageRegion( fixedImage->GetLargestPossibleRegion() );
    metric->SetTransform( transform );
    metric->SetInterpolator( interpolator );
    metric->SetNumberOfSpatialSamples( 1000 );

    metric->Initialize();
    double mutualInformation = metric->GetValue( transform->GetParameters()
);

Regards,
Jan



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