Date of Award

Spring 3-1-2025

Document Type

Thesis (Master's)

Department or Program

Computer Science

First Advisor

Wojciech Jarosz

Second Advisor

Adithya Pediredla

Third Advisor

Geoffrey Luke

Abstract

In this project, we present a wave optics bidirectional scattering distribution function(BSDF) for the material with a collection of scatterers, such as certain fabrics with pores or foggy glass, where the corona effect can be observed under strong light sources. This effect arises from the diffraction of individual scatterers and the interference between them. To describe this effect, we treat each scatterer as an aperture to calculate diffraction, while using a pair correlation function to represent their spatial relationships and calculate the interference. This two-level decomposition allows us to derive a BSDF that can control both the individual diffraction function and the interference function. Additionally, we extend this method to handle mixtures of different types of scatterers within a single system. Furthermore, we propose a practical strategy for importance sampling this BSDF and demonstrate the ability of our method to qualitatively reproduce the corona effect for several common materials.

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