Non-Photorealistic Computer Graphics Library

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Found 7 item(s) authored by "Seungyong Lee" Find Author on Google.

Proceedings Coherent Line Drawing
Henry Kang, Seungyong Lee, Charles K. Chui.
5th International Symposium on Non-Photorealistic Animation (NPAR'07), 2007. [BibTeX]

Article Detail Control in Line Drawings of 3D Meshes

Author(s): Kyuman Jeong, Alex Ni, Seungyong Lee, Lee Markosian.
Article: The Visual Computer (Pacific Graphics 2005), Vol. 21, No. 8, pp. 698--706, 2005.
[BibTeX] [DOI] Find this paper on Google

We address the problem of rendering a 3D mesh in the style of a line drawing, in which little or no shading is used and instead shape cues are provided by silhouettes and suggestive contours. Our specific goal is to depict shape features at a desired scale. For example, when mesh triangles project into the image plane at sub-pixel sizes, both suggestive contours and silhouettes may form dense networks that convey shape poorly. The solution we propose is to convert the input mesh to a multi-resolution representation (specifically, a progressive mesh), then view-dependently refine or coarsen the mesh to control the size of its triangles in image space. We thereby control the scale of shape features that are depicted via silhouettes and suggestive contours. We propose a novel refinement criterion that achieves this goal, and we address the problem of maintaining temporal coherence of silhouette and suggestive contours when extracting them from a changing mesh.

Article Flow-Based Image Abstraction
Henry Kang, Seungyong Lee, Charles K. Chui.
IEEE Transactions on Visualization and Computer Graphics, Vol. 15, No. 1, pp. 62--76, 2009. [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
Alex Ni, Kyuman Jeong, Seungyong Lee, Lee Markosian.
SI3D '06: Proceedings of the 2006 symposium on Interactive 3D graphics and games, pp. 133--137, New York, NY, USA, ACM Press, 2006. [BibTeX]

Proceedings Real-Time Pencil Rendering
Hyunjun Lee, Sungtae Kwon, Seungyong Lee.
NPAR '06: Proceedings of the 4th international symposium on Non-photorealistic animation and rendering, pp. 37--45, New York, NY, USA, ACM Press, 2006. [BibTeX]

Article Shape-simplifying Image Abstraction
Henry Kang, Seungyong Lee.
Computer Graphics Forum, Vol. 27, No. 7, pp. 1773--1780, 2008. [BibTeX]

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