Non-Photorealistic Computer Graphics Library

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Found 7 item(s) authored by "Allison W. Klein" .

Proceedings A Spectral Approach to NPR Packing
Ketan Dalal, Allison W. Klein, Yunjun Liu, Kaleigh Smith.
NPAR '06: Proceedings of the 4th international symposium on Non-photorealistic animation and rendering, pp. 71--78, New York, NY, USA, June, ACM Press, 2006. [BibTeX]

Proceedings Animosaics
Kaleigh Smith, Yunjun Liu, Allison W. Klein.
ACM SIGGRAPH/Eurographics Symposium on Computer animation (SCA'05), pp. 201--208, 2005. [BibTeX]

Proceedings Isoluminant Color Picking for Non-Photorealistic Rendering
Trân-Quân Luong, Ankush Seth, Allison W. Klein, Jason Lawrence.
Graphics Interface (GI'05), pp. 233--240, June, 2005. [BibTeX]

Proceedings Non-Photorealistic Virtual Environments
Allison W. Klein, Wilmot Li, Michael M. Kazhdan, Wagner T. Correa, Adam Finkelstein, Thomas A. Funkhouser.
Proceedings of SIGGRAPH 2000, Kurt Akeley, pp. 527--534, July, ACM Press / ACM SIGGRAPH / Addison Wesley Longman, 2000. [BibTeX]

Proceedings Performance-Driven Hand-Drawn Animation

Author(s): Ian Buck, Adam Finkelstein, Charles Jacobs, Allison W. Klein, David H. Salesin, Joshua E. Seims, Richard Szeliski, Kentaro Toyama.
Proceedings: 1st International Symposium on Non-Photorealistic Animation and Rendering (NPAR'00), pp. 101--108, Annecy, France, June 05 - 07, 2000.
[BibTeX] Find this paper on Google

We present a novel method for generating performance-driven, “hand-drawn” animation in real-time. Given an annotated set of hand-drawn faces for various expressions, our algorithm performs multi-way morphs to generate real-time animation that mimics the expressions of a user. Our system consists of a vision-based tracking component and a rendering component. Together, they form an animation system that can be used in a variety of applications, including teleconferencing, multi-user virtual worlds, compressed instructional videos, and consumer-oriented animation kits. This paper describes our algorithms in detail and illustrates the potential for this work in a teleconferencing application. Experience with our implementation suggests that there are several advantages to our hand-drawn characters over other alternatives: (1) flexibility of animation style; (2) increased compression of expression information; and (3) masking of errors made by the face tracking system that are distracting in photorealistic animations.

Proceedings Stylized Video Cubes
Allison W. Klein, Peter-Pike J. Sloan, Adam Finkelstein, Michael F. Cohen.
ACM SIGGRAPH Symposium on Computer Animation, pp. 15--22, July, 2002. [BibTeX]

Proceedings Video Mosaics
Allison W. Klein, Tyler Grant, Adam Finkelstein, Michael F. Cohen.
NPAR 2002: Second International Symposium on Non Photorealistic Rendering, pp. 21--28, June, 2002. [BibTeX]

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