[Insight-users] 3D rigid image registration

[Lydia Ng]

Steve,

> 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?

My two cents worth:
Mutual information should work, but since your problem is
intra-modal you are open to try out other metric as well.
http://www.itk.org/Doxygen/html/group__RegistrationMetrics.html

Each metric would give you a different shape space to optimize over.
For example, MI is very noisy, while means squares should be smoother =
etc.


> 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?

If you are using the current cvs checkout:
there is a description in=20
Insight/Applications/MultiResMIRegistration/ReadMe.pdf or ReadMe.doc
and some examples in
Insight/Applications/MultiResMIRegistration/SampleInputs

For Insight1.0.0 the equvialent directory is=20
Insight/Examples/MultiResMIRegistration

- Lydia

> -----Original Message-----
> From: Steve Boyd [mailto:skboyd@ucalgary.ca]
> Sent: Tuesday, December 10, 2002 2:21 PM
> To: insight-users@public.kitware.com
> Subject: [Insight-users] 3D rigid image registration
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> Hello,
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> I use micro-computed tomography to generate 3D image data of bone
> micro-structure, and I'd like to register images taken at=20
> different time
> points. It seems that the example in the ITK kit for mutual=20
> information
> registration would be a suitable approach to determine the 3D rigid
> transformation. I have two questions:=20
>=20
> 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?
>=20
> 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?
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> Thank you for any help with either of these two questions.
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> Sincerely,
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> Steve
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> --=20
> Steven Boyd, PhD
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> Assistant Professor
> Department of Mechanical and Manufacturing Engineering
> University of Calgary
> 2500 University Drive, N.W.
> Calgary, Alberta, Canada, T2N 1N4
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> tel. 1.403.220.4173  fax. 1.403.282.8406  skboyd@ucalgary.ca
> -------------------------------------------------------------------
> _______________________________________________
> Insight-users mailing list
> Insight-users@public.kitware.com
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