[Insight-users] Rotating a 3D volume

[Moti Freiman]

Hello,
I'm trying to rotate a  large 3D volume  about its z axis.
I'm using 3DCenteredeulertransform and itkresampleimagefilter.
I defined the output size to be the same as the input size.
However when I'm rotating the sides of the volume are cropped.
Is there any simple method to say to the filter to enlarge the volume 
without crop it.
Other possibility is to pad the original volume with zeros and then 
rotate it, so that just zeros will be crop.
Does any one have idea about it?
Thanks,
Moti

-- 
Moti Freiman, Ph.D Student.
Medical Image Processing and Computer-Assisted Surgery Laboratory.
School of Computer Science and Engineering.
The Hebrew University of Jerusalem Givat Ram, Jerusalem 91904, Israel 
Phone: +(972)-2-658-5371 (laboratory) 
E-mail: freiman at cs.huji.ac.il
WWW site: http://www.cs.huji.ac.il/~freiman