[MINC-users] minctracc with mask: objective function starts at 0.0: what to do?

[Andrew Janke]

Hi Michel,

I presume you mean you are aligning a mask to another mask?  If this
is the case yes you will have a fairly "saturated" objective function.

I would suggest using something like mincmorph and do a distance
transform on both of them and then align that.

The other option would be a mincblur with a big FWHM.

good luck


a

On Jan 19, 2008 12:27 AM, Audette, Michel
<Michel.Audette at medizin.uni-leipzig.de> wrote:
> Hi folks,
>
>
>
> I'd like to try to use some anatomically shaped (and morphologically dilated) masks to refine an affine registration into a piecewise affine registration. I'm seeing however that my objective function with minctracc starts off with a null objective function, for middle ear registration, and therefore produces the same transformation as its starting point. Is it possible to make its computation a bit more sensitive than it is?
>
>
>
> Cheers,
>
>
>
> Miche
>
>
>
> Michel Audette, Ph.D.
>
> Innovation Center Computer Assisted Surgery (ICCAS)
>
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>
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>
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Andrew Janke   (a.janke at gmail.com || http://a.janke.googlepages.com/)
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