Non-Photorealistic Computer Graphics Library

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Found 10 item(s) authored by "John W. Buchanan" Find Author on Google.

Proceedings Comprehensive Halftoning of 3D Scenes
Oleg Veryovka, John W. Buchanan.
Skiggraph '99, 1999. [BibTeX]

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

Proceedings Edge enhancement issues in halftoning
John W. Buchanan, Lisa M. Streit, Oleg Veryovka.
Graphics Interface (GI'98), pp. 209--216, 1998. [BibTeX]

Proceedings Halftoning with Image-Based Dither Screens
Oleg Veryovka, John W. Buchanan.
Graphics Interface (GI'99), 1999. [BibTeX]

Article Importance Driven Halftoning
Lisa M. Streit, John W. Buchanan.
Computer Graphics Forum (EG'98), Vol. 17, No. 3, 1998. [BibTeX]

Proceedings Non-photorealistic Rendering Using an Adaptive Halftoning Technique

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

One of the common goals of Non-Photorealistic Rendering is to emphasize or highlight particular image attributes by using different rendering styles. In order to do this often other information such as depth, surface or lighting information is incorporated into the rendering process. Most halftoning techniques try to preserve particular image attributes such as grey-scale intensities or edges, while avoiding the introduction of artifacts into the resulting image. In Importance Driven Halftoning Streit and Buchanan [1] introduced a technique that allows the preservation of other attributes by controlling rendering through the specification of the importance function and the chosen type of drawing primitive. This paper illustrates how importance driven halftoning can be extended for the creation of non-photorealistic images with information outside the 2D grey-scale image such as a 3D scene or model. Our extensions to Importance Driven Halftoning will provide the user with control over drawing primitives for the creation of tone and texture which is needed to create non-photorealistic images.

Proceedings Observational Model of Blenders and Erasers in Computer-Generated Pencil Rendering
Mario Costa Sousa, John W. Buchanan.
Proceedings of Graphics Interface (GI'99), pp. 157--166, 1999. [BibTeX]

Article Observational Models of Graphite Pencil Materials
Mario Costa Sousa, John W. Buchanan.
Computer Graphics Forum, Vol. 19, No. 1, pp. 27--49, March, 2000. [BibTeX]

Article Special Effects with Half-Toning
John W. Buchanan.
Computer Graphics Forum, Vol. 15, No. 3, pp. 97--108, 1996. [BibTeX]

Proceedings The edge buffer: A data structure for easy silhouette rendering
John W. Buchanan, Mario Costa Sousa.
1st International Symposium on Non-Photorealistic Animation and Rendering (NPAR'00), pp. 39--42, Annecy, France, June 05 - 07, 2000. [BibTeX]

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