[Insight-users] Image registration error

[Torsten Rohlfing]

Hi --

Just a wild guess Eric: are you rotating around the coordinate origin 
(0,0,0), which is a corner of your image, instead of the image center? 
That would certainly explain why your rotating outside the field of 
view. Whether your image viewer shows each image centered or not is 
irrelevant by the way, because it does not take into account whatever 
transformation you're applying between the two.

Hope this helps.

Torsten

> Eric,
>
> The only way that exception could be thrown is if the pixel count for a 
> particular iteration through the GetValue() method equaled 0.  It could 
> be that for one reason or another, your previous inputs are not updating 
> their Region areas like they should.  Before setting your moving and 
> fixed images, try calling the ->Update() method on each one.
>
> BTW, what kind of transform are you using, and what are your initial 
> parameters for it?
>
> Cheers,
> Dan
>
> Eric John wrote:
> >/
> />/ Hi Dan, I did have experience with rotating images out of view, but 
> />/ the rotated image is basically centered in both of my image 
> />/ viewers.....I even looked at the header file, but don't see anything 
> />/ that would indicate offsets, etc. Any suggestions, I would like to use 
> />/ the pre-rotated image for preproccesing reasons?
> />/
> />/ Thanks alot,
> />/
> />/ Eric /

-- 
Torsten Rohlfing, PhD          SRI International, Neuroscience Program
 Research Scientist             333 Ravenswood Ave, Menlo Park, CA 94025
  Phone: ++1 (650) 859-3379      Fax: ++1 (650) 859-2743
   torsten at synapse.sri.com        http://www.stanford.edu/~rohlfing/

     "Though this be madness, yet there is a method in't"