Illustrating smooth surfaces

A. Hertzmann, D. Zorin

Research output: Contribution to conferencePaperpeer-review

455 Citations (SciVal)


We present a new set of algorithms for line-art rendering of smooth surfaces. We introduce an efficient, deterministic algorithm for finding silhouettes based on geometric duality, and an algorithm for segmenting the silhouette curves into smooth parts with constant visibility. These methods can be used to find all silhouettes in real time in software. We present an automatic method for generating hatch marks in order to convey surface shape. We demonstrate these algorithms with a drawing style inspired by A Topological Picturebook by G. Francis.

Original languageEnglish
Number of pages10
Publication statusPublished - 2000
Externally publishedYes
EventSIGGRAPH 2000 - New Orleans, LA, United States
Duration: 23 Jul 200028 Jul 2000


ConferenceSIGGRAPH 2000
Country/TerritoryUnited States
CityNew Orleans, LA


  • Direction fields
  • Hatching
  • Non-photorealistic rendering
  • Pen-and-ink illustration
  • Silhouettes


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