3D Discrete Normal Vectors

Pierre Tellier (1) , Isabelle Debled-Rennesson (2)

1 LSIIT - Laboratoire des Sciences de l'Image, de l'Informatique et de la Télédétection
2 POLKA - Polynomials, Combinatorics, Arithmetic

Precise knowledge of normal vectors to discrete objects is mandatory in rendering algorithms. This article introduces a new method for the calculation of normal vectors to a digital object. This technique relies on discrete geometry theories~: the recognition of discrete straight lines and tangential lines in dimension 2. Results obtained with synthetic and real objects from medical imagery are presented and commented.

Mots clés: discrete geometry; objet discret; discrete object; normal; normale; géomètrie discrète

Domaines: Autre [cs.OH]

Pierre Tellier, Isabelle Debled-Rennesson. 3D Discrete Normal Vectors. International Conference on Discrete Geometry for Computer Imagery - DGCI'99, 1999, Marne-la-Vallée, France, pp.447-458. ⟨inria-00098884⟩