Fitting virtual lights for non-diffuse walkthroughs
Bruce Walter, Gün Alppay, Eric P. Lafortune, Sebastían Fernández, Donald P. Greenberg · 1997
This paper describes a technique for using a simple shading method, such as the Phong lighting model, to approximate the appearance calculated by a more accurate method.The results are then suitable for rapid display using existing graphics hardware and portable via standard graphics API's.Interactive walkthroughs of view-independent nondiffuse global illumination solutions are explored as the motivating application.