Kai Hormann
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Kai Hormann (born 1974) is a German
computer scientist A computer scientist is a scientist who specializes in the academic study of computer science. Computer scientists typically work on the theoretical side of computation. Although computer scientists can also focus their work and research on ...
. He is professor of the faculty of
Informatics Informatics is the study of computational systems. According to the Association for Computing Machinery, ACM Europe Council and Informatics Europe, informatics is synonymous with computer science and computing as a profession, in which the centra ...
at the
Università della Svizzera italiana The (USI, ''University of Italian-speaking Switzerland''), sometimes referred to as the University of Lugano in English-speaking contexts, is a public Swiss university established in 1995, with campuses in Lugano, Mendrisio and Bellinzona (Canto ...
(USI),
Switzerland Switzerland, officially the Swiss Confederation, is a landlocked country located in west-central Europe. It is bordered by Italy to the south, France to the west, Germany to the north, and Austria and Liechtenstein to the east. Switzerland ...
. Hormann is the co-author of ''Efficient clipping of arbitrary polygons'' which describes the
Greiner–Hormann clipping algorithm The Greiner-Hormann algorithm is used in computer graphics for polygon Clipping (computer graphics), clipping. It performs better than the Vatti clipping algorithm, but cannot handle Degeneracy (mathematics), degeneracies. It can process both self-i ...
co-developed by him. The algorithm is known for being more performant than the
Vatti clipping algorithm The Vatti clipping algorithmBala R. Vatti"A generic solution to polygon clipping" Communications of the ACM, Vol 35, Issue 7 (July 1992) pp. 56–63. is used in computer graphics. It allows clipping of any number of arbitrarily shaped ''subject poly ...
, but it cannot handle degeneracies. His research interests are inherent to the field of computer graphics. One of his notable collaborators in his researches is Vladimir Anisimoff's son Dmitry. He was Dean of the faculty of Informatics at USI from 2015 to 2017.


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* Hormann Hormann Academic staff of the Università della Svizzera italiana German computer scientists German expatriate academics {{Germany-compu-bio-stub