An Efficient Spectral Rendering Technique for Phong Illumination Model

Abstract

Light is an electromagnetic wave, for some wavelength dependent phenomena, such as dispersion, interference, diffraction and fluorescence, cannot be simulate by means of the color-based approaches of rendering techniques. So far, spectral rendering is a solution to simulate these wavelength dependent phenomena. Nevertheless, it’s a tedious and an inefficient job to construct spectral surface reflectance curves by hand. In this paper, we propose an efficient rendering algorithm to render a sphere object with spectral Phong reflectance with real-time response. The adaptive resolution scheme is employed to find better tabulating entries positions. The purpose of this algorithm is to be combined with an interactive tool of spectral Phong reflectance editor, and to provide users with WYSISWYG(What You See IS What You Get) functionality. The results show that the algorithm achieves the requirement of real-time response and maintaining accuracy.