Ah, I think I got the point. Thank you for your quick reply. :) Lijie Huang
On Fri, Apr 1, 2011 at 10:26 AM, Douglas Greve <gr...@nmr.mgh.harvard.edu>wrote: > Hi Lijie, we have a default surface template that we use. When you create > an average subject from a group, a template based on those subjects is > created at the same time. This can be used as a registration target. > doug > > > On 3/31/11 9:03 PM, soft.join Huang wrote: > > Thanks for your reply, Douglas. > I also have something unclear, that which target is used when we register > one subject's surface to a 'template', a default surface in the FreeSurfer > or something else, like one surface selected randomly from my specified > subjects. > > Best Regards, > Lijie Huang > > On Fri, Apr 1, 2011 at 5:34 AM, Douglas N Greve <gr...@nmr.mgh.harvard.edu > > wrote: > >> Hi Lijie, yes, for the volume averages that is the process (uses the >> linear 12 DOF registration to the MNI305). For surfaces, the average >> surfaces are created based on the non-linear surface transformation (not >> from the average volume). >> doug >> >> soft.join Huang wrote: >> >>> Hi all: >>> Recently, I have a question about some details of the function >>> make_average_subject, which creates some average surfaces and volumes based >>> on the specified subjects' files. >>> And I'm wondering how it make an average one. >>> In my opinion, every specified subject's volume and surface register to a >>> existed template( something like fsaverage) and we can acquire a transform >>> matrix or something like it. According to the transformation, we can >>> register them roughly. And then we can average them to a mean one. >>> I don't know whether my thought right or not. Can anyone give me some >>> tips? :) >>> Thanks in advance >>> Lijie Huang >>> ------------------------------------------------------------------------ >>> >>> _______________________________________________ >>> Freesurfer mailing list >>> Freesurfer@nmr.mgh.harvard.edu >>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer >>> >> >> -- >> Douglas N. Greve, Ph.D. >> MGH-NMR Center >> gr...@nmr.mgh.harvard.edu >> Phone Number: 617-724-2358 Fax: 617-726-7422 >> >> Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting >> FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html >> >> >> >> The information in this e-mail is intended only for the person to whom it >> is >> addressed. If you believe this e-mail was sent to you in error and the >> e-mail >> contains patient information, please contact the Partners Compliance >> HelpLine at >> http://www.partners.org/complianceline . If the e-mail was sent to you in >> error >> but does not contain patient information, please contact the sender and >> properly >> dispose of the e-mail. >> >> >
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