Image-Based Lighting Design
Frederik Anrys | Philip Dutré |
Contact: Computer Graphics Research Group
Proceedings of the 4th IASTED International Conference on Visualization, Imaging, and Image Processing
Marbella, Spain, September 2004
Abstract
In this paper, we present a lighting design framework for near-diffuse real objects, starting from a set of prerecorded photographs of an object under various lighting conditions. Light sources are placed at fixed positions around an object, for which the intensities are to be determined. Using existing digital imaging software, the lighting designer paints the desired illumination distribution on a photograph of an object. This painted-on illumination is used to determine the light intensities which produce a shading of the real object matching the desired illumination distribution. Certain areas in the painted image can be favored among others by weighting their importance in the optimization algorithm.
Keywords: lighting design, image-based rendering, computer graphics