Hairy brushes

ABSTRACT

Paint brushes are modeled as a collection of bristles which evolve over the course of the stroke, leaving a realistic image of a sumi brush stroke. The major representational units are (1) Brush: a compound object composed of bristles, (2) Stroke: a trajectory of position and pressure, (3) Dip: a description of the application of paint to a class of brushes, and (4) Paper: a mapping onto the display device. This modular system allows experimentation with various stochastic models of ink flow and color change. By selecting from a library of brushes, dips, and papers, the stroke can take on a wide variety of expressive textures.

References

1. 1.Benton, Stephen A., "Holographic Displays- A Review," OpHcal Engineering 14, 5, Sept-Oct 1975.
2. 2.Buxton, W., Hill, R., and Rowley, P., "Issues and Techniques in Touch-Sensitive Tablet Input," Computer Graphict 19~ 3, July 1985: pp. 215-224.
3. 3.Ginsberg, C., and Maxwell, D., "Graphical Marionette," Proc. A CM SIGGRAPH/SIGART Workshop on Motion, April 1983, pp. 172-179.
4. 4.Greene, Richard, "The Drawing Prism: A Versatile Graphic Input Device," Computer Graphics 19~ 3, July 1985, pp. 103-110.
5. 5.Lewis, John-Peter, "Texture Synthesis for Digital Painting," Computer Graphics 18: 3, July 1984, pp. 245-251.
6. 6.Minsky, Margaret, ~Manipu}ating Simulated Objects with Real-world Gestures using a Forcc and Position Sensitive Screen," Computer Graphics 18~ 3, July 1984, pp. 195-203.
7. 7.Rogers, David F., "Procedural Elements for Computer Graphics," McGraw-Hill, New York, 1985.
8. 8.Sato, Shozo, "The Art of Sumi-e'" (in English), Kodansha International, Tokyo, 1984.
9. 9.Schmandt., Chris, "Spatial I~put,/Display Correspondence in a Stereoscopic Computer Graphic '~~orkstation,~ Computer Graphics 17, 3, July 1983, pp. 253- 257.
10. 10.Strassm~nn, Steve, ~'Hairy Brushes in Computer~ Generated Images," M.S. Thesis, MIT Media Laboratory, June 1986.
11. 11.Whirred, Turner, ~'Anti-aliasecl Line Drawing Using Brush Extrusions" Computer Graphics 17, 3, July } 983, pp. }5}-} 56.
12. 12.Wolfram, Stephen, "Cellular Automata as Models of Complexity," Nature 311~ 4, 1984~ pp. 419-424.

Index Terms

• Applied computing

  • Physical sciences and engineering

    • Chemistry

• Computing methodologies

  • Computer graphics

    • Animation

      • Physical simulation

    • Image manipulation

    • Rendering

    • Shape modeling

      • Parametric curve and surface models

      • Volumetric models

  • Modeling and simulation

    • Simulation evaluation

• Mathematics of computing

  • Continuous mathematics

    • Topology

      • Geometric topology