IEEE Trans Vis Comput Graph - Cone Tracing for Furry Object Rendering.

Tópicos

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Resumo

We present a cone-based ray tracing algorithm for high-quality rendering of furry objects with reflection, refraction and defocus effects. By aggregating many sampling rays in a pixel as a single cone, we significantly reduce the high supersampling rate required by the thin geometry of fur fibers. To reduce the cost of intersecting fur fibers with cones, we construct a bounding volume hierarchy for the fiber geometry to find the fibers potentially intersecting with cones, and use a set of connected ribbons to approximate the projections of these fibers on the image plane. The computational cost of compositing and filtering transparent samples within each cone is effectively reduced by approximating away in-cone variations of shading, opacity and occlusion. The result is a highly efficient ray tracing algorithm for furry objects which is able to render images of quality comparable to those generated by alternative methods, while significantly reducing the rendering time. We demonstrate the rendering quality and performance of our algorithm using several examples and a user study.

Resumo Limpo

present conebas ray trace algorithm highqual render furri object reflect refract defocus effect aggreg mani sampl ray pixel singl cone signific reduc high supersampl rate requir thin geometri fur fiber reduc cost intersect fur fiber cone construct bound volum hierarchi fiber geometri find fiber potenti intersect cone use set connect ribbon approxim project fiber imag plane comput cost composit filter transpar sampl within cone effect reduc approxim away incon variat shade opac occlus result high effici ray trace algorithm furri object abl render imag qualiti compar generat altern method signific reduc render time demonstr render qualiti perform algorithm use sever exampl user studi

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