not sure about --continuous, Rudolph will know. The quadratic patch stuff is in mris_cuvature, but maybe also in mris_curvature_stats
On Fri, 26 Feb 2010, Lisa Ronan wrote: > Many thanks for that. Am I correct in thinking that the Gauss_Bonnet scheme > is given by the "--discrete" option in mris_curvature_stats, while the > latter option is given by the "--continuous" flag? > > L > > > On Fri, Feb 26, 2010 at 1:46 PM, Bruce Fischl > <fis...@nmr.mgh.harvard.edu>wrote: > >> Hi Lisa, >> >> we actually provide a discrete estimate using Gauss-Bonnet (Rudolph can >> give you the details), and a slightly larger-scale estimate by fitting a >> quadratic patch to each neighborhood (5mm on a side I think). The curvature >> then comes from the Hessian of the height function of that patch. >> >> cheers, >> Bruce >> >> >> On Fri, 26 Feb 2010, Lisa Ronan wrote: >> >> Hi All >>> >>> I wonder could you tell me how Gaussian curvature values are computed at a >>> vertex, i.e. Gauss_Bonnet scheme? Is there any way to vary the >>> neighborhood >>> over which the vertex curvature values are computed? >>> >>> Thanks for your help, >>> >>> Lisa Ronan >>> >>> - - - - - - - - - - >>> Research Associate >>> Brain Mapping Unit >>> Sir William Hardy Building >>> Department of Psychiatry >>> University of Cambridge >>> >>> > _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
