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

Author(s): Kaleigh Smith, Yunjun Liu, Allison W. Klein.
Proceedings: ACM SIGGRAPH/Eurographics Symposium on Computer animation (SCA'05), pp. 201--208, 2005.
[BibTeX] Find this paper on Google

Abstract:
Animated mosaics are a traditional form of stop-motion animation created by arranging and rearranging small objects or tiles from frame to frame. While this animation style is uniquely compelling, the traditional process of manually placing and then moving tiles in each frame is time-consuming and labourious. Recent work has proposed algorithms for static mosaics, but generating temporally coherent mosaic animations has remained open. In addition, previous techniques for temporal coherence allow non-photorealistic primitives to layer, blend, deform, or scale, techniques that are unsuitable for mosaic animations. This paper presents a new approach to temporal coherence and applies this to build a method for creating mosaic animations. Specifically, we characterize temporal coherence as the coordinated movement of groups of primitives. We describe a system for achieving this coordinated movement to create temporally coherent geometric packings of 2D shapes over time. We also show how to create static mosaics comprised of different tile shapes using area-based centroidal Voronoi diagrams.

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

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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