b) yes, it means that the fold is "sharper" at least in one direction
I want to underscore Bruce's point. Higher mean curvature could mean
that folds are sharper. It does not mean that there are necessarily more
folds.
--
Rudolph Pienaar, Dr.Eng / email: rudolph@nmr.mgh.harvard.edu
MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging
149 (2301) 13th Street, Charlestown, MA 02129 USA