@techreport{Grabli:2003:APA,
  number = {4724},
  optnote = {},
  optaddress = {},
  author = {St{\'{e}}phane Grabli and Fr\'{e}do Durand and Emmanuel Turquin and
            Fran{\c{c}}ois X. Sillion},
  optkey = {},
  opttype = {},
  url = {http://artis.imag.fr/Publications/2003/GDTS03/},
  localfile = {papers/Grabli.2003.APA.pdf},
  optmonth = {},
  optdoi = {},
  optwww = {},
  optstatus = {},
  abstract = {This paper introduces a procedural approach to non-photorealistic
              line drawing from 3D models. The approach is inspired both by
              procedural shaders in classical rendering and by the power of
              procedural modeling. We propose a new image creation model where
              all operations are controlled procedurally. A view map describing
              all relevant support lines in the drawing is first created from
              the 3d model; a number of style modules operate on this map, by
              procedurally selecting and chaining lines before creating strokes
              and assigning drawing attributes. Two different levels of user
              control are provided, ranging from a low-level programming API to
              a parameterized building-block assembly mechanism. The resulting
              drawing system allows very flexible control of all elements of
              drawing style: first, different style modules can be applied to
              different types of lines in a view; second, stroke attributes are
              assigned procedurally and can be correlated at will with various
              scene or view properties. We illustrate the components of our
              system and show results of its application.},
  title = {{A} {P}rocedural {A}pproach to {S}tyle for {NPR} {L}ine {D}rawing
           from {3D} {M}odels},
  institution = {Institut National de Recherche en Informatique et en
                 Automatique, INRIA Rhone-Alpes},
  year = {2003},
}