[Insight-users] Question about multiResolutionPyramidImageFilter class

[Kaveh Kohan]

Dear Luis,

Thank you for your reply.

Is it the same effort as this (I mean that this code is uploaded by the same people). This one sound very comprehensive:

http://www.seas.upenn.edu/~jtduda/itkvector.html

I have a another question which sounds orthogonal but it is very relevant:

There is also another class in ITK for vectorial image " VectorResampleImageFilter" but it seems that it is mostly used for deformation field expansion. I am wondering what is the difference? DeformationField is basically a vectorial image isn't it? Since there have been classes in ITK to do multiResolution image registration (for scalar) and as a part of that one needs to apply the same pyramid on deformation field (VectorResampleImageFilter), I thought it is very natural to have this class imeplemented for vectorial image pyramid. Please illustrate me if I am missing something in my induction. Does it have anything to do with difference between covector and vector image (I am sorry if it is irrelevant)?

Thanks,





________________________________
From: Luis Ibanez <luis.ibanez at kitware.com>
To: Kaveh Kohan <kaveh.kohan at yahoo.com>
Cc: insight-users at itk.org
Sent: Mon, October 12, 2009 12:41:57 PM
Subject: Re: [Insight-users] Question about multiResolutionPyramidImageFilter  class

Hi Kaveh,

Unfortunately,
I think that the answer to both question is : no.

On the bright side, however, there have been some efforts
for extending the Image Registration Framework to  support
vector images.

The major components to be modified are the Image metrics.
A couple of Vector Image interpolators are already available,
and the other components (Optimizer, Transform) are image
agnostic.

See for example:
http://svn.na-mic.org/NAMICSandBox/trunk/VectorImageRegistrationMethod/


You may want to join these efforts.


     Regards,


           Luis



--------------------------------------------------------------------------
On Sat, Oct 10, 2009 at 6:38 PM, Kaveh Kohan <kaveh.kohan at yahoo.com> wrote:
> Hello Everybody,
>
>
> I have two questions and I would appreciate if anybody answer:
>
> 1. I have a question about MultiResolutionPyramidImageFilter class. I was
> wondering whether it accepts vector image (i.e. image voxels of which is not
> scalar but vector) as input or not.
>
> 2. Plus I am wondering is there any available example of multi-resolution
> re-sampling of vectorial image available in ITK?
>
> Thnka you very much,
>
>
>
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