A photodetector, coupled to a computer via an AC-DC converter (capacity 8 or 12 bit) is used to monitor the time changes in daylight illumination. In particular, a picture of the successive (percent) changes in lighting is given by averaging input data across pre-established time blocks, to refer to "frequencies" of importance from the biological stand point. This assessment of the instability of lighting, on a fine time scale, might be of importance for those systems, like human vision (and, why not, robotic vision), working on a differential sensitivity basis, and where the input is controlled by servomechanisms.

Date Published: 10 July 1987
PDF: 8 pages
Proc. SPIE 0701, 1986 European Conf on Optics, Optical Systems and Applications, (10 July 1987); doi: 10.1117/12.937031

Published in SPIE Proceedings Vol. 0701:
1986 European Conf on Optics, Optical Systems and Applications
Stefano Sottini; Silvana Trigari, Editor(s)