Break Curves and Decorative Etchings

To trace break curves on a sherd surface using 3D LiveWire techniques, we first had to convert the CT scanned sherd data into a triangle mesh surface format. Leymarie, Laidlaw and the software package AVS were instrumental in making this happen on short notice. Once I had a triangle mesh surface representation, I could use my Master's code to extract the curves (and etchings). This involved:

computing an estimate of surface curvature
choosing a curve smoothness parameter
picking the endpoints of curve segments

Although these initial results provide us with sample data as well as valuable insight into the vessel reconstruction problem, the fact is that a user must guide this process. We have focussed our attention on other techniques.

Curvature

Break-curves obtained with 4 mouse clicks.

Curvature

Curves obtained by picking only the endpoints.

Top: The STITCH Project Contact: Stuart Andrews

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