@TechReport{TR027,
  author =	 "Dieter Willersinn and Etienne Bertin and Walter
                  G. Kropatsch",
  institution =	 "PRIP, TU Wien",
  number =	 "PRIP-TR-027",
  title =	 "Dual {I}rregular {V}onroi {P}yramids and
                  {S}egmentation",
  year =	 "1994",
  url =		 "https://www.prip.tuwien.ac.at/pripfiles/trs/tr27.pdf",
  abstract =	 "We continue previous work about the combination of
                  top-down and bottom-up adaptive segmentation
                  techniques, Voronoi diagrams and irregular
                  pyramids. We extend our considerations to the dual
                  irregular pyramid to overcome the problem of
                  increasing degree inherent to the ``classical''
                  irregular pyramid. Experimental results are
                  presented, the analysis of which reveals
                  inconsistencies in the theory of dual irregular
                  pyramids. The conclusion of the report outlines two
                  strategies for research in view of a solution.",
}