ShadeVis an open source tool for computing ambient occlusion
technion.ac.il
Direct Visibility of Point Sets, Sagi KatzArchived 2012-06-06 at the Wayback Machine, Ayellet Tal, and Ronen Basri, SIGGRAPH 2007, ACM Transactions on Graphics, Volume 26, Issue 3, August 2007
web.archive.org
Détection de changement sur des données géométriques tridimensionnelles, D. Girardeau-Montaut, PhD manuscript (french), 2006 - available on Pastel
Direct Visibility of Point Sets, Sagi KatzArchived 2012-06-06 at the Wayback Machine, Ayellet Tal, and Ronen Basri, SIGGRAPH 2007, ACM Transactions on Graphics, Volume 26, Issue 3, August 2007