Non-Photorealistic Computer Graphics Library

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Found 37 item(s) authored in "1999".
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Proceedings An Illustration Technique Using Hardware-Based Intersections and Skeletons
Oliver Deussen, Jörg Hamel, Andreas Raab, Stefan Schlechtweg, Thomas Strothotte.
Graphics Interface (GI'99), pp. 175--182, 1999. [BibTeX]

Proceedings An Interface for Sketching 3D Curves
Jonathan M. Cohen, Lee Markosian, Robert C. Zeleznik, John F. Hughes, Ronen Barzel.
Proceedings of the 1999 ACM Symposium on Interactive 3D Graphics, pp. 17--21, 1999. [BibTeX]

Misc Animated Teleconferencing: Video Driven Facial Animation
Ian Buck.
B.S.E. Undergraduate Thesis, June, 1999. [BibTeX]

Proceedings Art-Based Rendering of Fur, Grass, and Trees
Michael A. Kowalski, Lee Markosian, J.D. Northrup, Lubomir D. Bourdev, Ronen Barzel, Loring S. Holden, John F. Hughes.
Proceedings of Siggraph 99, 1999. [BibTeX]

Proceedings Beyond Photorealism
Stuart Green.
10th Eurographics Workshop on Rendering, 1999. [BibTeX]

Article Capturing and Re-Using Rendition Styles for Non-Photorealistic Rendering
Jörg Hamel, Thomas Strothotte.
Computer Graphics Forum, Vol. 18, No. 3, 1999. [BibTeX]

Proceedings Comprehensive Halftoning of 3D Scenes

Author(s): Oleg Veryovka, John W. Buchanan.
Proceedings: Skiggraph '99, 1999.
[BibTeX] Find this paper on Google

Abstract:
The display of images on binary output hardware requires a halftoning step. Conventional halftoning algorithms approximate image values independently from the image content and often introduce artificial texture that obscures fine details. The objective of this research is to adapt a halftoning technique to 3D scene information and thus to enhance the display of computer generated 3D scenes. Our approach is based on the control of halftoning texture by the combination of ordered dithering and error diffusion techniques. We extend our previous work and enable a user to specify the shape, scale, direction, and contrast of the halftoning texture using an external buffer. We control texture shape by constructing a dither matrix from an arbitrary image or a procedural texture. Texture direction and scale are adapted to the external information by the mapping function. Texture contrast and the accuracy of tone reproduction are varied across the image using the error diffusion process. We halftone images of 3D scenes by using the geometry, position, and illumination information to control the halftoning texture. Thus, the texture provides visual cues and can be used to enhance the viewer’s comprehension of the display.

Master Thesis Computational expressionism : a study of drawing with computation
Joanna Maria Berzowska.
Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, February, 1999. [BibTeX]

PhD Thesis Computer-Generated Graphite Pencil Materials and Rendering
Mario Costa Sousa.
Department of Computing Science, University of Alberta, June, 1999. [BibTeX]

Proceedings Computer-Generated Pencil Drawing
Mario Costa Sousa, John W. Buchanan.
Skiggraph '99, 1999. [BibTeX]

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