\input zb-basic
\input zb-ioport
\iteman{io-port 05110571}
\itemau{Dorst, Leo; van den Boomgaard, Rein}
\itemti{The Support Cone: A Representational Tool for the Analysis of Boundaries and Their Interactions.}
\itemso{IEEE Transactions on Pattern Analysis and Machine Intelligence 22, No.02, 174-178 (2000).}
\itemab
Summary: We present a directional boundary representation which deals locally and consistently with the boundary's ``inside.'' We show that collision and wave propagation are reduced to addition on the spectrum of directions and we derive transformation laws for differential geometrical properties such as directed curvature.
\itemrv{~}
\itemcc{}
\itemut{mathematical morphology.}
\itemli{doi:10.1109/34.825755}
\end