A single-shot light probe

Authors:
Paul Debevec;Paul Graham;Jay Busch;Mark Bolas
Affiliations:
University of Southern California Institute for Creative Technologies;University of Southern California Institute for Creative Technologies;University of Southern California Institute for Creative Technologies;University of Southern California Institute for Creative Technologies
Venue:
ACM SIGGRAPH 2012 Talks
Year:
2012

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Abstract

We demonstrate a novel light probe which can estimate the full dynamic range of a scene with multiple bright light sources. It places diffuse strips between mirrored spherical quadrants, effectively co-locating diffuse and mirrored probes to record the full dynamic range of illumination in a single exposure. From this image, we estimate the intensity of multiple saturated light sources by solving a linear system.