[Insight-users] 3D rigid image registration

[Luis Ibanez]

Hi Steve,

1. MutualInformation is the best approach for
    multimodal registration. Since you are using
    the same image modality, you have the choice
    of using other image metrics.

    You may want to take a look a "PatternIntensity"
    which has been reported to be one of the most
    effective by Hawkes et al.

    MutualInformation should still be capable of
    registering same modality images anyways and
    compared to the other metrics will be much
    shorter computing times.

    Lydia added recently a variant of MutualInformation,
    It is called "MattesMutualInformation" and could
    also be an option to try.

    In any case, only experimentation with your
    particular kind of images will give the definite
    response to what metric is the best.


2. The data file for running the MultiResMIRegistration
    is explained in detail in the PDF file available in
    the same directory

  /Insight/Applications/MultiResMIRegistration/ReadMe.pdf

     input sample files are available on the subdirectory:

/Insight/Applications/MultiResMIRegistration/SampleInputs

     for example:
                     PracCTtoT1.txt
                     PracPETToPD.txt



Please let us know if you have further questions,


   Thanks


      Luis


=====================================

Steve Boyd wrote:

> Hello,
> 
> I use micro-computed tomography to generate 3D image data of bone
> micro-structure, and I'd like to register images taken at different time
> points. It seems that the example in the ITK kit for mutual information
> registration would be a suitable approach to determine the 3D rigid
> transformation. I have two questions: 
> 
> 1. Because my data is not multi-modal (all from CT), is it a
> disadvantage to use this approach?  Is there another approach that I
> should consider?
> 
> 2. Trying to run the ITK example "MultiResMIRegistration" I need to
> include a parameter file as an argument, but I do not know what this
> file should contain.  Have I missed downloading a part of the ITK
> package, or can somebody explain what the param.file should contain?
> 
> Thank you for any help with either of these two questions.
> 
> Sincerely,
> 
> Steve
> 
>