[Insight-users] Question about MultiResMiRegistration result?

[Chen, Cheng-Hsiu (MED)]

Is anyone know how to interpret the result of MultiResMIRegistration
(e.g. The Overall Transformation matrix and offset)?
If the rotation is measured between -1 and 1, then what
is the measurement of translation offset? by pixel or pixel size?
Where is the origin of the coordinate system?
What kind of coordinate system? Left-Hand/Right-Hand?
or something else?

I performed the MultiResMIRegistatin on the same image set
at different O.S. (Linux and Window2000), the result are different.

On Window 2000 the transformation matrix is
 0.99951   -0.0148422 -0.0275434
 0.0121688  0.995421  -0.94812
 0.0288245  0.0944304  0.995114 
Translation offset is:
-32.0531 63.969 -62.4461

On Linux the transformation matrix is:
 0.999512  -0.0241558 -0.0198178
 0.0223209  0.995862  -0.0880938
 0.0218638  0.0876085  0.995915
Translation offset is:
-32.4999 60.1089 -54.4322

Cheng
=================================================
Cheng-Hsiu  Chen
8499 Darrow Road, Suite 2
Twinsburg, OH 44087
(330) 487-6679                Cheng-Hsiu.Chen@med.ge.com
GE Medical Systems            www.gemedicalsystems.com