Graphics Gems V (IBM Version)

V.7

Improving Intermediate Radiosity Images Using Directional Light

Feda Martin,     Technical University of Vienna Vienna, Austria. E-mail address: [e-mail]

This gem describes a simple extension of ambient light to directional light for the improvement of progressive refinement radiosity images ( Cohen et al. 1988). Directional light gives the user a much better impression of the scene geometry than ambient light, for only a little additional expense. The approach described here exploits the same approach as ambient light to estimate the final illumination, but includes a directional component. Although the new technique presented here is simple and gives much better results than the conventional ambient light, surprisingly it ...