Painting with light.

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.

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