https://dsi.limos.fr/ 2026-04-06T11:28:32+00:00 https://dsi.limos.fr/ https://dsi.limos.fr/lib/tpl/bootstrap3/images/favicon.ico text/html 2018-03-02T16:02:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://dsi.limos.fr/doku.php?id=graham.py&rev=1520002969&do=diff #!/usr/bin/python3 # positive if p,q,r is counterclockwise # negative if p,q,r is clockwise def orientation(p,q,r): return ((q[0]-p[0]) * (r[1]-p[1])) - ((r[0]-p[0]) * (q[1]-p[1])) def upperHull(P): P.sort() # Sort by x coordinate ch = [P[0]] for p in P[1:]: while len(ch) >= 2 and orientation(p, ch[-1], ch[-2]) < 0: ch.pop() # Remove a point from the upper hull ch.append(p) # Add a point to the upper hull return ch def lowerHull(P): P2 = [(-p[0],… text/html 2019-03-14T13:25:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://dsi.limos.fr/doku.php?id=members&rev=1552566327&do=diff People Faculty * Violaine Antoine: Data mining, clustering * Vincent Barra (director): Image and video processing, machine learning, deep learning * Gaëlle Bonnet-Loosli: Machine learning, kernel methods, deep learning * Jean-Marie Favreau: Geometry processing, medical imaging, computer graphics * Guilherme D. da Fonseca: Computational geometry, geometric approximation, data structures text/html 2018-02-09T11:36:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://dsi.limos.fr/doku.php?id=publications&rev=1518172602&do=diff Publications (since 2015) text/html 2018-01-22T09:13:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://dsi.limos.fr/doku.php?id=research_topics&rev=1516608833&do=diff Research topics Vincent Barra ---------- Gaëlle Bonnet ---------- Guilherme Dias da Fonseca ---------- Jean-Marie Favreau Jean-Marie Favreau est à l'origine du projet ACTIVmap. ---------- Yan Gerard ---------- Chafik Samir text/html 2018-01-10T14:24:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://dsi.limos.fr/doku.php?id=sidebar&rev=1515590694&do=diff * Research Topics * People * Publications * Teaching text/html 2018-01-10T14:24:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://dsi.limos.fr/doku.php?id=spi6&rev=1515590694&do=diff Computational Geometry: Theory and Applications Geometric Foundations (Yan Gerard) * Introduction * Convex Geometry * Geometry Modeling * Digital Geometry * Discrete Differential Geometry Computational Geometry (Guilherme da Fonseca) References * Computational Geometry: Algorithms and Applications. Mark de Berg, Otfried Cheong, Marc van Kreveld, and Mark Overmars. * David Mount lecture notes Convex hulls text/html 2018-06-20T10:57:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://dsi.limos.fr/doku.php?id=start&rev=1529485056&do=diff Geometry, imaGes, learninG, and alGorithms The research group Geometry, imaGes, learninG and alGorithms (G4) is a member of the Decision Support Models and Algorithms (MAAD) group. We are all part of the LIMOS lab, in the Cézeaux campus of Université Clermont Auvergne, near Clermont Ferrand, France. Short summary The research topics of this group are centered on n-dimensional data modeling and analysis, from both methodology and application points of view. The team's interdisciplinary skills … text/html 2018-01-22T09:06:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://dsi.limos.fr/doku.php?id=teaching&rev=1516608410&do=diff Teaching * SPI 6 - Computational Geometry: Theory and Applications * Machine Learning, ZZ2 ISIMA * Deep Learning, ZZ3 ISIMA