 |
 |
Hi, Emily. Have you looked into avwscale? It will output the halfway transform for you, if that's what you're after. hth, Paul On Wed, May 16, 2012 at 9:32 AM, Emily Coffey <[log in to unmask]>wrote: > Hi, > > I am trying to find the midpoint of a rigid body registration between two > consecutive scans. Thomas et al., 2009 have done this previously, and > provide the description: "the halfway point was determined by taking the > square root of the alignment transformation (rigid, 6 DOF)". > > I tried using the -sqrt option in fslmaths but this appears to be designed > to handle volume data rather than transformation matrices. I thought it > might be doable manually using MatLab's matrix capability but the format > does not seem to be appreciated by MatLab. > > Ideas? > > E. >