Wednesday, April 25, 2001 - 11:00am - 12:00pm
Hartmut Prautzsch (Universität Fridericiana (TH) Karlsruhe)
In CAGD free form surfaces are usually represented by tangent plane or curvature continuous spline surfaces. In Computer Graphics and in applications, where speed is more a concern than accuracy, free form surfaces are often represented by triangular nets, i.e. continuous pw linear spline surfaces. In this talk we propose to use point sets only with local connectivity to reconstruct, represent and modify free form surfaces. Most operations and ideas that have been developed for triangular nets can also be used (after appropriate modifications) with our reduced representation. The quality of our results is the same as for triangular nets and moreover, our algorithms are faster and simpler.