Summary: Closed­Form Expressions for Irradiance
from Non­Uniform Lambertian
Luminaires
Part I : Linearly­Varying Radiant Exitance
Min Chen James Arvo
Technical Report CS­TR­00­01
Computer Science Department
California Institute of Technology
Pasadena, California
May 25, 2000


Closed­Form Expressions for Irradiance from
Non­Uniform Lambertian Luminaires
Part I : Linearly­Varying Radiant Exitance #
Min Chen + James Arvo #
Abstract
We present a closed­form expression for the irradiance at a point on a surface due to
an arbitrary polygonal Lambertian luminaire with linearly­varying radiant exitance. The
solution consists of elementary functions and a single well­behaved special function that can

Source: Arvo, Jim - Departments of Information and Computer Science & Electrical and Computer Engineering, University of California, Irvine

Collections: Computer Technologies and Information Sciences