Non-Photorealistic Computer Graphics Library

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Found 134 item(s) authored in "2004".
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Proceedings Extracting 3D Stylized Accentuation Effects from a Painted Image
Youetsu Sato, Yoshinori Dobashi, Tsuyoshi Yamamoto, Katsumi Takao, Ken Anjyo.
Computer Graphics International (CGI'04), pp. 222--229, June, 2004. [BibTeX]

Proceedings Frame Skeleton Based Auto-Inbetweening in Computer Assisted Cel Animation
Konstantin Melikhov, Feng Tian, Hock Soon Seah, Quan Chen, Jie Qiu.
International Conference on Cyberworlds (CW'04), pp. 216--223, November, 2004. [BibTeX]

Proceedings Frame-to-Frame Coherent Halftoning in Image Space
Mike Eissele, Daniel Weiskopf, Thomas Ertl.
Theory and Practice of Computer Graphics (TPCG'04), pp. 188--195, Bournemouth, 2004. [BibTeX]

Misc Free-form Video Tooning Deformation
Jue Wang, Ying-Qing Xu, Michael F. Cohen.
Poster on SCA2004, 2004. [BibTeX]

In Book Game Programming Gems 4
Bert Freudenberg, Maic Masuch, Thomas Strothotte.
Andrew Kirmse, Real-Time Halftoning: Fast and Simple Stylized Shading, pp. 443--440, Charles River Media, 2004. [BibTeX]

Technical Report Genetic Painting: A Salience Adaptive Relaxation Technique for Painterly Rendering
John P. Collomosse, Peter M. Hall.
University of Bath, No. CSBU-2003-02, UK, October, 2004. [BibTeX]

Proceedings Graph-Based Point Relaxation for 3D Stippling
Oscar E. Meruvia Pastor, Thomas Strothotte.
Fifth Mexican International Conference in Computer Science (ENC'04), pp. 141--150, September, 2004. [BibTeX]

Proceedings Hardware-Determined Feature Edges

Author(s): Morgan McGuire, John F. Hughes.
Proceedings: 3rd International Symposium on Non-Photorealistic Animation and Rendering (NPAR'04), pp. 35-147, 2004.
[BibTeX] Find this paper on Google

Algorithms that detect silhouettes, creases, and other edge based features often perform per-edge and per-face mesh computations using global adjacency information. These are unsuitable for hardware-pipeline implementation, where programmability is at the vertex and pixel level and only local information is available. Card and Mitchell and Gooch have suggested that adjacency information could be packed into a vertex data structure; we describe the details of converting global/per-edge computations into local/per-vertex computations on a related ‘edge mesh.’ Using this trick, we describe a feature-edge detection algorithm that runs entirely in hardware, and show how to use it to create thick screen-space contours with end-caps that join adjacent thick line segments. The end-cap technique favors speed over quality and produces artifacts for some meshes. We present two parameterizations for mapping stroke textures onto these thick lines—a tessellation-independent screen space method that is better suited to still images, and an object space method better suited to animation. As additional applications, we show how to create fins for fur rendering and how to extrude contours in world-space to create the sides of a shadow volume directly on the GPU. The edge mesh is about nine times larger than the original mesh when stored at 16-bit precision and is constructed through a linear time pre-processing step. As long as topology remains fixed, the edge mesh can be animated as if it were a vertex mesh.

Article High Quality Hatching
Johannes Zander, Tobias Isenberg, Stefan Schlechtweg, Thomas Strothotte.
Computer Graphics Forum (EG'04), Vol. 23, No. 3, pp. 421--430, September, 2004. [BibTeX]

Proceedings High-Quality Silhouette Illustration for Texture-Based Volume Rendering
Zoltán Nagy, Reinhard Klein.
The 12th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision (WSCG'2004), V. Skala, R. Scopigno, Vol. 12, No. 2, pp. 301--308, February, UNION Agency - Science Press, 2004. [BibTeX]

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