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Proceedings Paper

Video semaphore decoding for free-space optical communication
Author(s): Matthew Last; Brian Fisher; Chinwuba Ezekwe; Sean Michael Hubert; Sheetal Patel; Seth Hollar; Brian S. Leibowitz; Kristofer S. J. Pister
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Paper Abstract

Using teal-time image processing we have demonstrated a low bit-rate free-space optical communication system at a range of more than 20km with an average optical transmission power of less than 2mW. The transmitter is an autonomous one cubic inch microprocessor-controlled sensor node with a laser diode output. The receiver is a standard CCD camera with a 1-inch aperture lens, and both hardware and software implementations of the video semaphore decoding algorithm. With this system sensor data can be reliably transmitted 21 km form San Francisco to Berkeley.

Paper Details

Date Published: 27 April 2001
PDF: 11 pages
Proc. SPIE 4303, Real-Time Imaging V, (27 April 2001); doi: 10.1117/12.424948
Show Author Affiliations
Matthew Last, Univ. of California/Berkeley (United States)
Brian Fisher, Univ. of California/Berkeley (United States)
Chinwuba Ezekwe, Univ. of California/Berkeley (United States)
Sean Michael Hubert, Univ. of California/Berkeley (United States)
Sheetal Patel, Univ. of California/Berkeley (United States)
Seth Hollar, Univ. of California/Berkeley (United States)
Brian S. Leibowitz, Univ. of California/Berkeley (United States)
Kristofer S. J. Pister, Univ. of California/Berkeley (United States)


Published in SPIE Proceedings Vol. 4303:
Real-Time Imaging V
Nasser Kehtarnavaz, Editor(s)

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