2010 Volume 9 Issue 2 Pages 311-321
The present paper proposes a real-time rendering method based on object surface properties and multi-spectral reflection model. An RGB image is device-dependent and valid for only the fixed conditions of illumination and viewing. On the other hand, spectral reflectance information of an object surface is more useful than RGB information because we can create realistic images of the object under arbitrary illumination and viewing conditions. Firstly, we develop a 3D reflection model based on Nayer model, Torrance-Sparrow model, Fresnel model and multi-spectral information for precise description of object surface reflectance. Secondly, we develop a rendering algorithm of the object under ambient light source distribution. And also, we implement the reflection model to Graphics Processing Unit(GPU) for improving rendering performance. Finally, we render some objects by using multi-spectral reflection model. The overall feasibility of our method is confirmed based on computer graphics images created by using the estimated parameters.
