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 >> >>
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