Paulo SantosLIGOZAT, G.SAFI-SAMGHABAD, M.2022-01-122022-01-122016SANTOS, P. E.; LIGOZAT, G.; LIGOZAT, G. An occlusion calculus based on an interval algebra. Proceedings - 2015 Brazilian Conference on Intelligent Systems, BRACIS 2015, p. 128-133, nov. 2016.https://repositorio.fei.edu.br/handle/FEI/3912© 2015 IEEE.This paper introduces a new qualitative spatial reasoning formalism, called Interval Occlusion Calculus (IOC), that takes into account multiple viewpoints of a scene. This formalism extends Allen's Algebra by including an interval-based definition for spatial occlusion. We prove that IOC is a relation algebra and show complexity results for this formalism.Acesso RestritoArtigo de evento10.1109/BRACIS.2015.12Allen AlgebraMultiple ViewpointsQualitative Spatial Reasoning