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KIAM Preprint  63, Moscow, 2008
Authors: Voloboy A. G., Galaktionov V. A., Lobalzo N.A.
Physically Based Lighting Model for Cloth and its Validation
Abstract:
We present a new approach to modeling lighting in cloth based on a confirmed assumption that cloth yarns are scattering media. The paper proposes a way to calculate Bi-directional Reflectance Distribution Function (BRDF) of a yarn by integrating the yarns Bidirectional Sub-Surface Scattering Reflectance Distribution Function (BSSRDF) over the yarns surface. The yarns BSSRDF is obtained via a Monte-Carlo ray tracing simulation of scattering and absorption of light within yarns volume. We demonstrate that the new approach is physically plausible by showing the correspondence of scattering patterns of the incident light between our modeled cloth sample and a piece of a real cotton cloth. The scattering pattern of a real cloth is acquired via direct measurement performed with a proprietary measurement apparatus.
Publication language: russian,  : 18
Research direction:
Mathematical modelling in actual problems of science and technics
Russian source text: