[Insight-users] different spacing

[Grace Chen]

Hi there,

I am trying to perform multi-modality registration for two volumes.  The two image data have different physical attributes, etc. different origin, spacing and dimension (so, on the screen, one looks bigger than the other).  I simulated a movement (e.g. a translation (5, -25, 0) in the fixed image.  However, when the registration program returns, the final transform matrix is 

 0.999951     0.00912699   -0.00371374     1.3884 

-0.0091721   0.999882       -0.0123175       -3.48145 

0.00360089  0.0123509      0.999917         2.08022 

0                   0                     0                      1

This result is wrong, isn't it?  Does the registration program scale the images before aligning them?  What's going on?

Thanx!

Grace


-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://public.kitware.com/pipermail/insight-users/attachments/20051228/b27bd3e9/attachment.html