Hi Jeff
there are two utilities we provide for this (and yes, David is always correct!):
1. mris_make_face_parcellation - create approximately unifom-sized parcels using icosahedral subdivisions. These can be uniform in the native space using the ?h.sphere, or in register and uniform in the group space using ?h.sphere.reg.
2. mris_divide_parcellation - divides an existing annotation file (e.g. lh.aparc.annot) either with a specific set of divisions specified by the user, or so that no individual parcel is greater than a specified surface area.
cheers Bruce
On Tue, 18 Jun 2013, Jeff Eriksen wrote:
I just attended the pre-OHBM FSL/FS course, and spoke to David Salat there about possibilities to create more detailed sub-parcellationsfrom the two major structural atlases. Could someone please let me know if David was right that such tools exist, and/or point me to them?
My goal is essentially to create relatively equal-area parcellations with say 100, 200, 500, 1000, 2000, 5000, etc. ROIs per hemisphere, retaining some type of labeling to indicate where each ROI came from.
Thanks, -Jeff
PS I am at the HBM meeting through mid-day Thursday if someone here is able to talk to me in person (maybe even David!). My cell is 971-533-3942 if someone in Seattle wants to call or text.
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