レイ・トレーシングにおける相互反射を考慮した表現について

概要

論文の詳細を見る
This paper presents an algorithm of ray tracing, including a method of interreflection calculation. Using a geometric method, a surface light-source configuration factor is calculated precisely. In addition, this algorithm is able to calculate direct and diffuse intensities of specular reflection which have an influence on interreflection. First, the direct intensity of a light source at a sample point is calculated by ray tracing. The diffuse intensity is calculated by solving interreflection equations. Next, by executing ray tracing at all pixels on a screen, their direct intensities are calculated. Finally, the diffuse intensity of every pixel is calculated by interpolating sample-point intensities, and adding them to the corresponding direct intensities. As a result, this algorithm brings about realistic color representation.
社団法人日本建築学会の論文
1996-11-30