[Insight-users] Strategies for registering "Large" images

[Michael Jackson]

  I have some images that are 7446x8332 pixels in width and height.  
 From experimenting with the images I know there are both  
translational and rotation components to the registration that needs  
to take place. I tried feeding both images into the  
2DCenteredRegistration example (with appropriate changes) but the  
program just seems to do nothing. Does not crash, but does not put out  
any progress text and doesn't take any CPU time either. It (the  
program) just seems like it is idle or something.
   Is there some sort of limit to the size of images I can feed into  
the registration algorithms by any chance (Probably only based on  
available memory would be my guess).
   Also, is there a way to load just one "corner" of each image and  
align based on those corners instead of having to load each image in  
its entirety? Is this a good idea?
   Also, the true center of rotation for the images is at best in the  
upper left corner of the image (in reality it is probably further  
"off" that corner but I'll take the top left corner if that would  
work. Should I be using a different registration algorithm? Euler  
based algorithm? I thought using the current algorithm would allow me  
to set the center of rotation where ever I needed it.

  Sorry for the basic questions but I am still trying to come up the  
learning curve.

Thanks for any help or advice.
_________________________________________________________
Mike Jackson                  mike.jackson at bluequartz.net
BlueQuartz Software                    www.bluequartz.net
Principal Software Engineer                  Dayton, Ohio