紀要論文

不均質な半透明物体内部での光の散乱挙動の解析

An Analysis of Light Scattering in Heterogeneous Translucent Materials

jpn

24321192

https://doi.org/10.15002/00022729

法政大学大学院情報科学研究科

法政大学大学院紀要. 情報科学研究科編

15

1

6

2020-03-24

Version of Record

We discuss an analysis of light scattering in heterogeneous translucent materials. We have to simulate the scattering events in order to render translucent materials realistically. Light scattering in homogeneous materials can be approximated by the Bidirectional Scattering Surface Reflectance Distribution Function (BSSRDF) model, which considers scattering as diffusion. On the other hand, heterogeneous materials are mixed with multiple optical properties, and it is difficult to consider light scattering as another phenomenon. Because of this, there is no BSSRDF models for heterogeneous materials. Our goal is to obtain photo-realistic rendering results of heterogeneous translucent materials with BSSRDF models. For this purpose, we have two experiments on the relationship between the change in optical properties and the light behavior. First, we average the optical properties in the scattering area and render heterogeneous materials with existing BSSRDF models. Second, we simulate light scattering with Monte Carlo ray tracing and analyze characteristics of scattering events. These results give us important knowledge to approximate light scattering in heterogeneous translucent materials.

Article

AA12746425