@TechReport{TR091,
  author =	 "Michael Lienhardt",
  title =	 "Morphological Operations on Surfaces",
  institution =	 "PRIP, TU Wien",
  number =	 "PRIP-TR-091",
  year =	 "2004",
  url =		 "https://www.prip.tuwien.ac.at/pripfiles/trs/tr91.pdf",
  abstract =	 "In this report, we propose an implementation of some
                  basic morophological operations on triangulations of
                  surfaces, in particular: \begin{itemize} \item
                  dilation \item complement \item intersection, union,
                  substraction of two objects on the
                  suface. \end{itemize} The definition of the distance
                  and an object on the surface are the main
                  contribution of this work. Some other functions for
                  the visualisation of the scene are also described. ",
}