Non-Photorealistic Computer Graphics Library

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Found 13 item(s) authored by "Lee Markosian" .
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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]

PhD Thesis Art-based Modeling and Rendering for Computer Graphics
Lee Markosian.
Department of Computer Science, Brown University, 2000. [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 Art-based Rendering with Continuous Levels of Detail
Lee Markosian, Barbara J. Meier, Michael A. Kowalski, Loring S. Holden, J.D. Northrup, John F. Hughes.
1st International Symposium on Non-Photorealistic Animation and Rendering (NPAR'00), pp. 59--66, Annecy, France, June 05 - 07, 2000. [BibTeX]

Proceedings Artistic Silhouettes: A Hybrid Approach
J.D. Northrup, Lee Markosian.
1st International Symposium on Non-Photorealistic Animation and Rendering (NPAR'00), pp. 31--37, Annecy, France, June 05 - 07, 2000. [BibTeX]

Article Coherent stylized silhouettes
Robert D. Kalnins, Philip L. Davidson, Lee Markosian, Adam Finkelstein.
ACM Transactions on Graphics, Vol. 22, No. 3, pp. 856--861, July, 2003. [BibTeX]

Article Detail Control in Line Drawings of 3D Meshes
Kyuman Jeong, Alex Ni, Seungyong Lee, Lee Markosian.
The Visual Computer (Pacific Graphics 2005), Vol. 21, No. 8, pp. 698--706, 2005. [BibTeX]

Technical Report Multi-scale Line Drawings from 3D Meshes
Alex Ni, Kyuman Jeong, Seungyong Lee, Lee Markosian.
Department of Electrical Engineering and Computer Science, University of Michigan, No. CSE-TR-510-05, July, 2005. [BibTeX]

Proceedings Multi-scale line drawings from 3D meshes

Author(s): Alex Ni, Kyuman Jeong, Seungyong Lee, Lee Markosian.
Proceedings: SI3D '06: Proceedings of the 2006 symposium on Interactive 3D graphics and games, pp. 133--137, New York, NY, USA, ACM Press, 2006.
[BibTeX] [DOI] Find this paper on Google

Abstract:
We present a method to view-dependently control the size of shape features depicted in computer-generated line drawings of 3D meshes. Our method exhibits good temporal coherence during level of detail transitions, and is fast because the calculations are carried out entirely on the GPU. The strategy is to pre-compute, via a digital geometry processing technique, a sequence of filtered versions of the mesh that eliminate shape features at progressively larger scales. Each filtered mesh retains the original connectivity, providing a direct correspondence between meshes. At run-time, the meshes are loaded onto the graphics card and a vertex program interpolates curvatures and positions between corresponding vertices in adjacent meshes of the sequence. A fragment program then renders silhouettes and suggestive contours to produce a line drawing for which the size of depicted shape features follows a user-specified "target size". For example, we can depict fine shape features over nearby surfaces, and appropriately coarse-scaled features in more distant regions. More general levelof-detail policies could be implemented on top of our approach by letting the target size vary with scene attributes such as depth, image location, or annotations provided by the scene designer.

Proceedings Real-Time Nonphotorealistic Rendering
Lee Markosian, Michael A. Kowalski, Samuel J. Trychin, Lubomir D. Bourdev, Daniel Goldstein, John F. Hughes.
ACM Siggraph 97, Annual Conference Series 1997, pp. 415--420, August, 1997. [BibTeX]

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