@techreport{Barla:2006:IHS,
  optpostscript = {},
  www = {http://arxiv.org/abs/cs.GR/0607050},
  author = {Pascal Barla and Simon Breslav and Jo{\"e}lle Thollot and Lee
            Markosian},
  optkey = {},
  optannote = {},
  opttype = {},
  url = {http://artis.inrialpes.fr/Publications/2006/BBTM06/},
  address = {France},
  localfile = {papers/Barla.2006.IHS.pdf},
  optkeywords = {},
  optmonth = {},
  optciteseer = {},
  optdoi = {},
  optnumber = {},
  abstract = {We describe a system that lets a designer interactively draw
              patterns of strokes in the picture plane, then guide the synthesis
              of similar patterns over new picture regions. Synthesis is based
              on an initial user-assisted analysis phase in which the system
              recognizes distinct types of strokes (hatching and stippling) and
              organizes them according to perceptual grouping criteria. The
              synthesized strokes are produced by combining properties (e.g.,
              length, orientation, parallelism, proximity) of the stroke groups
              extracted from the input examples. We illustrate our technique
              with a drawing application that allows the control of attributes
              and scale-dependent reproduction of the synthesized patterns.},
  title = {{I}nteractive {H}atching and {S}tippling by {E}xample},
  year = {2006},
  institution = {INRIA},
}