[Insight-users] mask on fix image and moving image

[Luis Ibanez]

Hi Xi,

It will be very helpful if you could post a screen shot
of the output image that you are getting.

I'm not sure that we understand what you mean when
you say that the output image has "ribs"....


You can use mask in both the Fixed and Moving images.
The effect of the mask will be that only the pixels that
are ON in the mask will be taken into account for the
computation of the metric.

Without having seen your input and output images is
hard to tell is using Masks is going to help remove
the undesirable artifacts that you are observing.


       Regards,


            Luis


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On Wed, Dec 23, 2009 at 3:05 AM, Xi LIANG <liangxi1986317 at hotmail.com> wrote:
> Dear all,
> My moving breast MRI image (without ribs) is a sub-region of the fix image
> (with ribs). Without using any mask, the output image is generated by using
> DeformableRegistraion8.cxx in the sample code. However, the output image
> shows some rib like shape, which is undesirable. I am thinking to use mask
> to fix this problem. There is an example in ImageRegistration8.cxx which
> apply FixImageMask in the Metric.
> My question is when should I use mask on fix/moving images, and how this can
> prevent the output image has extra "ribs"?
> I also guess that the linear interpolation could also be the reason, but not
> sure.
> Regards,
>
> Xi
>
>
>
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