Real-time Rendering of Objects Coated with Multilayer Thin Films

Abstract

This paper presents a real-time rendeing method for multilayer thin films.To render multilayer thin films, the products of the incident radiance, the composite reflectances, and the color matching functions are integrated.To calculate the integration, the incident radiance, composite reflectances, and the color matching functions are stored at each discretized wavelength. Therefore, the required data size is quite largeand the computational cost is quite expensive. To address this problem, our method approximates the spectrum distributions of them using a small number of wavelets. This reduces the data size and makes it possible to render on GPUs. Our method can render an object consists of ten thousands verticesat about 200 frames per second.with wavelets.