Non-Photorealistic Computer Graphics Library

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Found 10 item(s) authored in "1994".

Article Computer Art that Isn't
Dave Sims.
IEEE Computer Graphics and Applications, pp. 4--6, 1994. [BibTeX]

Article Computer Generated Copper Plates
Wolfgang Leister.
Computer Graphics Forum, Vol. 13, No. 1, pp. 69--77, 1994. [BibTeX]

Article Computer Graphics System for Reproducing Three-Dimensional Shape from Idea Sketch
Makoto Akeo, Hiroshi Hashimoto, Taisuke Kobayashi, Tetsuo Shibusawa.
Computer Graphics Forum, Vol. 13, No. 3, pp. 477--488, 1994. [BibTeX]

Technical Report Computer-Generated Pen-and-Ink Illustration
George Winkenbach, David H. Salesin.
Department of Computer Science & Engineering, No. 94-01-08b, University of Washington, Seattle, WA 98195, 23 June, 1994. [BibTeX]

Proceedings Drawing and Animation Using Skeletal Strokes
Siu Chi Hsu, Irene H. H. Lee.
Proceedings of SIGGRAPH 94, pp. 109--118, July, 1994. [BibTeX]

Article How to Render Frames and Influence People
Thomas Strothotte, Bernhard Preim, Andreas Raab, Jutta Schumann, David R. Forsey.
Computer Graphics Forum, Vol. 13, No. 3, pp. 455--466, 1994. [BibTeX]

Proceedings Interactive Pen-and-Ink Illustration
Michael P. Salisbury, Sean E. Anderson, Ronen Barzel, David H. Salesin.
SIGGRAPH 94 Conference Proceedings, pp. 101--108, July, 1994. [BibTeX]

Proceedings Multiresolution painting and compositing
Deborah F. Berman, Jason T. Bartell, David H. Salesin.
21st annual conference on Computer graphics and interactive techniques, pp. 85--90, 1994. [BibTeX]

PhD Thesis Non-photorealistic Rendering: A Critical Examination and Proposed System
Simon Schofield.
School of Art and Design, Middlesex University, United Kingdom, May, 1994. [BibTeX]

Article Real Time Fitting of Hand-Sketched Pressure Brushstrokes

Author(s): Thierry Pudet.
Article: Computer Graphics Forum, Vol. 13, No. 3, pp. 205--220, 1994.
[BibTeX] Find this paper on Google

A method is described for fitting the outline of hand-sketched pressure brushstrokes with Bézier curves. It combines the brush-trajectory model, in which a stroke is generated by dragging a brush along a given trajectory, with a fast curve fitting algorithm. The method has been implemented for a vector-based drawing program in which the user draws with a cordless pressure-sensitive stylus on a digitizing tablet. From the trajectory followed by the stylus, its associated pressure data, and a specified brush, a stroke of variable width is computed and displayed in real time. First, the digitized trajectory is fitted, thus removing noise. Then, from polygonal approximations of the fitted trajectory and the brush outline, a polygonal approximation of the stroke outline is computed. Working with polygonal approximations reduces computations to simple geometric operations and greatly simplifies the treatment of dynamic, pressure-controlled brushes. Last, the polygonal approximation of the stroke outline is fitted. The result is a closed piecewise Bézier curve approximating the brushstroke outline to within an arbitrary error tolerance. Several examples of hand-sketched drawings realized with this method are presented.

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