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[IHS+02]  Stylizing Silhouettes at Interactive Rates: From Silhouette Edges to Silhouette Strokes

Isenberg:2002:SSA (Article)
Author(s)Isenberg T., Halper N. and Strothotte T.
Title« Stylizing Silhouettes at Interactive Rates: From Silhouette Edges to Silhouette Strokes »
JournalComputer Graphics Forum (Proceedings of Eurographics 2002, Saarbrücken, Germany, September 2--6, 2002)
Volume21
Number3
Page(s)249--258
Year2002
AddressOxford, UK
URLhttp://isgwww.cs.uni-magdeburg.de/~nick/stylizedsilhouettes/
Editor(s)George Drettakis and Hans-Peter Seidel

Abstract
A way to create effective stylized line drawings is to draw strokes that start and stop at visible portions along the silhouette of an object to be portrayed. In computer graphics to date, algorithms to extract silhouette edges are many, although putting these edges into a form such that stylized strokes may be applied to them has not been greatly covered, so that existing methods are either time-consuming or presented vaguely. In this paper, we introduce an algorithm that takes a set of silhouette edges originating from polygonal meshes and efficiently computes the visible parts of the edges before connecting them to form long smooth silhouette strokes to which stylization algorithms may be effectively applied. Features of our algorithm that gain efficiency and accuracy over existing methods is that we directly exploit the analytic connectivity information of the mesh in combination with the available z-buffer information during rendering, and filter artifacts in connected edges during the process to improve the visual quality of strokes after stylization.

BibTeX code
@article{Isenberg:2002:SSA,
  www = {http://www.eg.org/EG/CGF/volume21/issue3/abstracts/CGF584.HTML},
  number = {3},
  month = sep,
  optnote = {},
  author = {Tobias Isenberg and Nick Halper and Thomas Strothotte},
  optkey = {},
  optannote = {},
  editor = {George Drettakis and Hans-Peter Seidel},
  url = {http://isgwww.cs.uni-magdeburg.de/~nick/stylizedsilhouettes/},
  address = {Oxford, UK},
  localfile = {papers/Isenberg.2002.SSA.pdf},
  publisher = {Blackwell Publishers},
  doi = {http://dx.doi.org/10.1111/1467-8659.00584},
  organization = {The Eurographics Association},
  journal = EUROGRAPHICS2002,
  citeseer = {http://citeseer.nj.nec.com/isenberg02stylizing.html},
  volume = {21},
  booktitle = {Proceedings of Eurographics 2002 (Saarbr{\"u}cken, Germany, sep
               2002)},
  optstatus = {doi},
  title = {{S}tylizing {S}ilhouettes at {I}nteractive {R}ates: {F}rom
           {S}ilhouette {E}dges to {S}ilhouette {S}trokes},
  abstract = {A way to create effective stylized line drawings is to draw
              strokes that start and stop at visible portions along the
              silhouette of an object to be portrayed. In computer graphics to
              date, algorithms to extract silhouette edges are many, although
              putting these edges into a form such that stylized strokes may be
              applied to them has not been greatly covered, so that existing
              methods are either time-consuming or presented vaguely. In this
              paper, we introduce an algorithm that takes a set of silhouette
              edges originating from polygonal meshes and efficiently computes
              the visible parts of the edges before connecting them to form long
              smooth silhouette strokes to which stylization algorithms may be
              effectively applied. Features of our algorithm that gain
              efficiency and accuracy over existing methods is that we directly
              exploit the analytic connectivity information of the mesh in
              combination with the available z-buffer information during
              rendering, and filter artifacts in connected edges during the
              process to improve the visual quality of strokes after
              stylization.},
  year = {2002},
  pages = {249--258},
}

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