[Insight-users] How to specify image masks for registration

[Karthik Krishnan]

Andrew Li wrote:

>Dear Itk users:
>
>We are planning to co-register an atlas with an image dataset.
>The atlas is the moving dataset and the image dataset is the fixed
>dataset.
>	
>We are planning to start with basic methods and then to try some more
>sophisticated ones if it is necessary.
>
>First thing first, we would like to specify a Moving-Image-Mask as the
>non-zero pixels in the atlas. 
>
>Question #1: how to prepare the input for the function
>SetMovingImageMask()?  Could we just use the atlas directly? Or we need
>to prepare the mask with a fixed value, say 1?
>  
>
Any spatial object will do. Spatial objects in ITK provide convenient 
ways to represent cuboids, ellipses, tubes....
If your mask is a binary image, you can use the ImageMaskSpatialObject, 
which represents an arbitrarily shaped image mask.

See
http://www.itk.org/cgi-bin/viewcvs.cgi/Examples/Registration/ImageRegistration12.cxx?annotate=1.8&root=Insight

-karthik

> 
>Thank you all very much in advance.
>
>-Andrew
> 
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