Research

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The computer graphics field of non-photorealistic rendering (NPR) aims at expanding the expressive power of computer graphics with alternate visual abstractions founded on knowledge and techniques long used by artists and scientific illustrators. NPR emphasizes specific features of a model, exposing subtle attributes and omitting extraneous information.

(a) Costa Sousa & Buchanan '99b; (b) Costa Sousa & Prusinkiewicz '03; (c) Buchin et al. '04;
(d)
Kim et al. '09; (e) Costa Sousa et al. '03; (f) Maciejewski et al. ´08.

To date, NPR projects are organized into seven groups.

  • Silhouette extraction. Costa Sousa 93
  • Automatic capture + reuse of artistic styles.
  • NPR for modeling representations.
  • NPR algorithms encoding artistic composition principles
  • Natural media simulation for graphite pencil adn pen-and-ink.
  • Automatic rendering of 3D models using natural media simulation.
  • Comparative analysis of hand-drawn and computer-generated stippling.

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