Modeling and Rendering of Woven Cloth Using Microfacet BSDF
Kensuke Tobitani, Atsushi Ishida, Shuhei NOMURA, Noriko Nagata · Journal of the Japan Society for Precision Engineering · 2013
The need for rendering woven fabrics arises frequently in computer graphics. Woven fabrics have a specific appearance, sheen, and transparency. A BRDF (bidirectional reflectance distribution function)/BTDF(bidirectional transmittance distribution function) model is well known as the basic technology for expressing the appearance of woven fabric. In order to represent the transparency of woven fabric, a BSDF (bidirectional scattering distribution function) model is required in addition to the BRDF/BTDF model. In this paper, we propose a BSDF model using the microfacet BTDF model(GGX model), and perform comparison experiments. As a result, we confirmed the effectiveness of our method with objects of quality of generated CG image, rendering time, and parameter adjustment. Our goal is to produce a catalog of curtain animations that can express various kinds of Woven Cloths under arbitrary light conditions.