Cornell University Program of Computer Graphics
Painting with light.Chris Schoeneman, Julie Dorsey, Brian Smits, James Arvo, and Donald Greenberg.
In James T. Kajiya, editor, SIGGRAPH 93 Conference Proceedings, Computer Graphics Proceedings, Annual Conference Series, pages 143--146. ACM SIGGRAPH, ACM Press, August 1993.
We present a new approach to lighting design for image synthesis. It is based on the inverse problem of determining light settings for an environment from a description of the desired solution. The method is useful for determining light intensities to achieve a desired effect in a computer simulation and can be used in conjunction with any rendering algorithm. Given a set of lights with fixed positions, we determine the light intensities and colors that most closely match the target image painted by the designer using a constrained least squares approach. We describe an interactive system that allows exible input and display of the solution.
This paper is available as a PDF file SDS+93.pdf (310K).