Non-Photorealistic Computer Graphics Library

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Found 5 item(s) authored by "Michael A. Kowalski" .

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 Real-Time Nonphotorealistic Rendering

Author(s): Lee Markosian, Michael A. Kowalski, Samuel J. Trychin, Lubomir D. Bourdev, Daniel Goldstein, John F. Hughes.
Proceedings: ACM Siggraph 97, Annual Conference Series 1997, pp. 415--420, August, 1997.
[BibTeX] Find this paper on Google

Abstract:
Nonphotorealistic rendering (NPR) can help make comprehensible but simple pictures of complicated objects by employing an economy of line. But current nonphotorealistic rendering is primarily a batch process. This paper presents a real-time nonphotorealistic renderer that deliberately trades accuracy and detail for speed. Our renderer uses a method for determining visible lines and surfaces which is a modification of Appel’s hidden-line algorithm, with improvements which are based on the topology of singular maps of a surface into the plane. The method we describe for determining visibility has the potential to be used in any NPR system that requires a description of visible lines or surfaces in the scene. The major contribution of this paper is thus to describe a tool which can significantly improve the performance of these systems. We demonstrate the systemwith several nonphotorealistic rendering styles, all of which operate on complex models at interactive frame rates.

Proceedings User-Guided Composition Effects for Art-Based Rendering
Michael A. Kowalski, John F. Hughes, Cynthia Beth Rubin, Jun Ohya.
2001 ACM Symposium on Interactive 3D Graphics, 2001. [BibTeX]

Article WYSIWYG NPR: Drawing Strokes Directly on 3D Models
Robert D. Kalnins, Lee Markosian, Barbara J. Meier, Michael A. Kowalski, Joseph C. Lee, Philip L. Davidson, Matthew Webb, John F. Hughes, Adam Finkelstein.
ACM Transactions on Graphics, Vol. 21, No. 3, pp. 755--762, July, 2002. [BibTeX]

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