Abstract
This paper presents a new BRDF model allowing the simulation of the optical behaviour of multilayer systems formed of homogeneous and isotropic thin films with random rough boundaries. The boundaries are supposed to be locally smooth and generated by a stationary and isotropic Gaussian process. Moreover, it is assumed that they are mutually independent from the statistical point of view. The BRDF is composed of three terms: specular, directional diffuse and uniform diffuse terms, and accounts for interference, diffraction and polarization effects. The expressions for the specular and directional diffuse components are derived analytically, by means of the Abeles formalism, within the framework of the Kirchhoff theory of diffraction. We present pictures of composite multilayer materials obtained by incorporating this model in a spectral ray-tracing algorithm.
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© 2000 Springer-Verlag Wien
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Icart, I., Arquès, D. (2000). A Physically-based BRDF Model for Multilayer Systems with Uncorrelated Rough Boundaries. In: Péroche, B., Rushmeier, H. (eds) Rendering Techniques 2000. EGSR 2000. Eurographics. Springer, Vienna. https://doi.org/10.1007/978-3-7091-6303-0_32
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DOI: https://doi.org/10.1007/978-3-7091-6303-0_32
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