Real-time hatching

E. Praun, H. Hoppe, M. Webb, A. Finkelstein

Research output: Contribution to conferencePaperpeer-review

207 Scopus citations


Drawing surfaces using hatching strokes simultaneously conveys material, tone, and form. We present a real-time system for non-photorealistic rendering of hatching strokes over arbitrary surfaces. During an automatic preprocess, we construct a sequence of mipmapped hatch images corresponding to different tones, collectively called a tonal art map. Strokes within the hatch images are scaled to attain appropriate stroke size and density at all resolutions, and are organized to maintain coherence across scales and tones. At runtime, hardware multitexturing blends the hatch images over the rendered faces to locally vary tone while maintaining both spatial and temporal coherence. To render strokes over arbitrary surfaces, we build a lapped texture parametrization where the overlapping patches align to a curvature-based direction field. We demonstrate hatching strokes over complex surfaces in a variety of styles.

Original languageEnglish (US)
Number of pages6
StatePublished - 2001
EventComputer Graphics Annual Conference (SIGGRAPH 2001) - Los Angeles, CA, United States
Duration: Aug 12 2001Aug 17 2001


OtherComputer Graphics Annual Conference (SIGGRAPH 2001)
Country/TerritoryUnited States
CityLos Angeles, CA

All Science Journal Classification (ASJC) codes

  • General Computer Science


  • Chicken-and-egg problem
  • Line art
  • Multitexturing
  • Non-photorealistic rendering


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