afni.nimh.nih.gov

3dAutobox can crop an image. Though I'm not sure the speed gains will be substantial, particularly when weighed against potential headaches later.

Many of the AFNI programs can accept a mask to reduce processing time, and high powered computing can be had for cheaper and cheaper (around $0.50 per hour on a beefy Linux virtual machine from either Amazon EC2 or Microsoft Azure).



Edited 3 time(s). Last edit at 03/06/2015 08:32AM by Peter Molfese.