[Insight-users] mutual information measure

[Joshua Cates]

Hi,

There is a validation study done by Lydia Ng on mutual information 
registration in the InsightDocuments repository which may be helpful.
See www.itk.org under the download section to access the InsightDocuments 
repository.

Josh.
______________________________
 Josh Cates			
 School of Computer Science	
 University of Utah
 Email: cates@sci.utah.edu
 Phone: (801) 587-7697
 URL:   http://www.sci.utah.edu/~cates


On Fri, 3 Jan 2003, J. Van Dalen wrote:

> 
> Dear itk-users,
> 
> I use itkMutualInformationImageToImageMetric to perform a registration. It
> all seems to work: I do not get error messages and by eye the two images
> seem to be on top of each other. However, the result depends very much on
> the value of the inputparameters (translateScale, numberOfIterations
> learningRate, standardDeviation, numberOfSamples). Now, I would like to
> tune these parameters to get an optimal result. Therefore, I would like to
> have some kind of a mutual information measure, that indicates how well
> the registration is performed. I already try to use GetValueAndDerivative
> in itkMutualInformationImageToImageMetric, but it doesn't give me any
> relevant information (I only observe fluctuations after each iteration).
> 
> Has anybody an idea? Is there something available in the itk routines
> that I overlooked?
> 
> Regards,
> Jorn.
> 
> 
> 
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