Tizian Zeltner

Practical Multiple-Scattering Sheen Using Linearly Transformed Cosines

Tizian Zeltner Brent Burley Matt Jen-Yuan Chiang

SIGGRAPH 2022 Talk

Illustration of our sheen model in a production setting. Low and high roughness values produce fuzzy or dusty appearances respectively as shown in the middle column.

Abstract

We introduce a new volumetric sheen BRDF that approximates scattering observed in surfaces covered with normally-oriented fibers. Our previous sheen model was motivated by measured cloth reflectance, but lacked significant backward scattering. The model presented here allows a more realistic cloth appearance and can also approximate a dusty appearance. Our sheen model is implemented using a linearly transformed cosine (LTC) lobe fitted to a volumetric scattering layer. We detail the fitting process, and present and discuss our results.

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BibTeX Reference

@inproceedings{Zeltner2022Practical,
    author = {Tizian Zeltner and Brent Burley and Matt Jen-Yuan Chiang},
    title = {Practical Multiple-Scattering Sheen Using Linearly Transformed Cosines},
    booktitle = {ACM SIGGRAPH 2022 Talks},
    articleno = {7},
    numpages = {2},
    year = {2022},
    series = {SIGGRAPH '22},
    doi = {10.1145/3532836.3536240},
}