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A Trigonal Prism-Based Method for Hair Image Generation
January/February 1992 (vol. 12 no. 1)
pp. 47-53

The difficulties involved in modeling and rendering hair in computer graphics are described. An efficient method using a trigonal prism model to render individual human hairs is presented. A wisp model easily controls hair shape with a few parameters. The method also proves effective for rendering eyebrows, eyelashes, beards, moustaches, clothes and personal ornaments such as earrings and hair accessories. A double z-buffer generates the backlighting effect. A simple parabola approximates wisp loci for hair animation. The method makes it possible to draw an enormous number of hairs within a reasonably short time.

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Citation:
Yasuhiko Watanabe, Yasuhito Suenaga, "A Trigonal Prism-Based Method for Hair Image Generation," IEEE Computer Graphics and Applications, vol. 12, no. 1, pp. 47-53, Jan.-Feb. 1992, doi:10.1109/38.135883
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