25 September 2014 A lighting metric for quantitative evaluation of accent lighting systems
Author Affiliations +
Accent lighting is critical for artwork and sculpture lighting in museums, and subject lighting for stage, Film and television. The research problem of designing effective lighting in such settings has been revived recently with the rise of light-emitting-diode-based solid state lighting. In this work, we propose an easy-to-apply quantitative measure of the scene's visual quality as perceived by human viewers. We consider a well-accent-lit scene as one which maximizes the information about the scene (in an information-theoretic sense) available to the user. We propose a metric based on the entropy of the distribution of colors, which are extracted from an image of the scene from the viewer's perspective. We demonstrate that optimizing the metric as a function of illumination configuration (i.e., position, orientation, and spectral composition) results in natural, pleasing accent lighting. We use a photorealistic simulation tool to validate the functionality of our proposed approach, showing its successful application to two- and three-dimensional scenes.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Cyril O. Acholo, Cyril O. Acholo, Kenneth A. Connor, Kenneth A. Connor, Richard J. Radke, Richard J. Radke, "A lighting metric for quantitative evaluation of accent lighting systems", Proc. SPIE 9190, Thirteenth International Conference on Solid State Lighting, 91900K (25 September 2014); doi: 10.1117/12.2062190; https://doi.org/10.1117/12.2062190


Real time compensation of in aging effects in solid state...
Proceedings of SPIE (September 17 2014)
Preferred color spaces for white balancing
Proceedings of SPIE (May 15 2003)
Measuring color quality of light sources
Proceedings of SPIE (September 12 2006)
Photometric ranging and 3-D vision
Proceedings of SPIE (July 31 1990)

Back to Top