Publications

On the Computation of the 3D Visibility Skeleton, S. Lazard, C. Weibel, S. Whitesides, L. Zhang,   to appear in The 16th Annual International Computing and Combinatorics Conference (COCOON 2010)

On the Degree of Standard Geometric Predicates for Line Transversals in 3D, H. Everett, S. Lazard, B. Lenhart, L. Zhang,   Computational Geometry: Theory and Applications, Vol.42, No.5 (2009) 484 - 494. (PDF).

On the size of the 3D visibility skeleton: Experimental results, L. Zhang, H. Everett, S. Lazard, C. Weibel, and S. Whitesides, 16th Annual European Symposium on Algorithms, Sep. 2008 (PDF).

Towards an Implementation of the 3D Visibility Skeleton, L. Zhang, H. Everett, S. Lazard, S. Whitesides,   23rd Annual ACM Symposium on Computational Geometry, Gyeongju, South-Korea, June 2007 (PDF)   Video

On the expected size of the 2d visibility complex, H. Everett, S. Lazard, S. Petitjean, L. Zhang,  International Journal of Computational Geometry and Applications, Vol.17, No.4 (2007) 361-381. (PDF).

Predicates for Line Transversals in 3D, H. Everett, S. Lazard, B. Lenhart, J. Redburn, L. Zhang, 18th Canadian Conference on Computational Geometry. Kingston, Canada. Aug. 2006 (PDF)   Presentation slides

An Experimental Assessment of the 2D Visibility Complex, H. Everett, S. Lazard, S. Petitjean, L. Zhang, 17th Canadian Conference on Computational Geometry. Windsor, Canada. Aug. 2005 (PDF)   Presentation slides

A spectral-particle hybrid method for rendering falling snow, M. S. Langer, L. Zhang, A.W. Klein, A. Bhatia, J. Pereira, D. Rekhi, Eurographics Symposium on Rendering. Norkoping, Sweden. June 2004 (PDF)   Video Samples

How to make a motion parallax stimulus using an inverse Fourier transform, L.Zhang and M.S.Langer, European Conference on Visual Perception, Paris, France, Sep. 2003.
Presentation slides   Abstract

Rendering falling snow using an inverse Fourier transform, M.S.Langer and L.Zhang, SIGGRAPH 2003, San Diego, Technical Sketch (PDF)   Presentation slides

Ph.D. Thesis

On the 3D visibility skeleton: implementation and analysis, submitted on Sep. 2009 (PDF).

M.Sc. Thesis

Rendering falling snow using an inverse Fourier transform, submitted on Aug. 2003 (PDF), along with a few video demoes of it:
Snowing Day   Snowstorm Struck Sydney   Non-coherent Motion   Motion Inconsistancy