[Insight-users] multidimensional EM with volumetric images in ITK

[Luis Ibanez]

Hi Audette,


Yes,
what you are planning to do is entirely feasible with ITK.


1) Why do you want to pass the image through  VTK ?
    it seems that most of it can be done directly in ITK


2) You may want to look at the papers regarding new
    readers for the MINC format in the Insight Journal:
      http://www.insight-journal.org/
http://insight-journal.org/dspace/handle/1926/191


3) If you read your images using a Vector type as pixel
    type, for example, FixedArray<double,6>, you can then
    connect this image to an ImageToListAdaptor, and then
    use the resulting ListSample class in the framework
    of any classifier, such as the EM methods.

    When you take a image with multiple-components pixel
    type and adapt it as a ListSample, it generates a
    multi-variate sample.



   Regards,


      Luis


-----------------------
Audette, Michel wrote:
> Dear Insight Users,
> 
> I would like to read in several image (minc format) volumes, and use those to define a multidimensional VTK image. I would then like to run an Expectation Maximization method that attempts to find multidimensional Gaussians, using some kind of ImageToListAdaptor (vector itkImageToListAdaptor?). Each input would be read separately, but how does one go about casting those scalar image inputs as part of a vector-valued image, over which to run EM? Is such a thing feasible in ITK?
> 
> Cheers,
> 
> Michel
> 
> Michel Audette, Ph.D. 
> Innovation Center Computer Assisted Surgery (ICCAS) 
> Philipp-Rosenthal-Strasse 55
> Leipzig, Germany
> Phone: ++49 (0) 341 / 97 - 1 20 13
> Fax: ++49 (0) 341 / 97 - 1 20 09
> 
> 
>  
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