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In non-photorealistic rendering, line direction matters much of effects. In order to achieve a good effect, I wanna rotate texture to principal curvature directions.

I have 3D mesh model(consist of triangle set). I wanna estimate principle curvature directions for each vertices in the model. You can answer this question or tell me where can I find the methods(such as give out a paper).

genpfault
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cyblocker
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  • Could you explain the effect you're trying to create? There might be a simpler way than doing complex geometry. – LukeGT May 08 '12 at 05:05
  • Thanks for your help. We finished our work a long time ago. We wanted to realize pencil rendering effect and we used a trick to skip this principle curvature direction step. – cyblocker Sep 15 '13 at 06:01

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The usual way to do this is determining the curvature tensor. See the resources at http://www-sop.inria.fr/members/Pierre.Alliez/demos/curvature/

datenwolf
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