Video camera-based visibility measurement system

Details Video camera-based visibility measurement system Video camera-based visibility measurement system

2005-02-08

2005-02-08

Rosenberger, Richard A. (Department: 2877)

Optics: measuring and testing

For light transmission or absorption

Of fluent material

Reexamination Certificate

active

06853453

ABSTRACT:
A video camera based atmospheric visibility measurement system that is capable of providing automated measurements of atmospheric visibility during both the day and night. For daylight measurements, the system views an image that has contrasting portions. A representative contrast signal is generated for contrasting portions of the images. The representative contrast number is used to generate an exponential curve of contrast levels versus distance. Atmospheric visibility is determined by detecting where the exponential curve reaches a threshold of visibility.

REFERENCES:
patent: 2198971 (1940-04-01), Neufeld
patent: 3694936 (1972-10-01), Ling et al.
patent: 4200398 (1980-04-01), Persson et al.
patent: 4216498 (1980-08-01), Evans et al.
patent: 4921349 (1990-05-01), Richards
patent: 5987152 (1999-11-01), Weisser
patent: 6128088 (2000-10-01), Nishiwaki
patent: 3801368 (1989-07-01), None
“Glossary of Meteorology,”American Meteorological Society, 7 pgs., (1959).
Duntley, S., “The Reduction of Apparent Contrast by the Atmosphere,”Journal of the Optical Society of America, vol. 38, No. 1-12, pp. 179-191, (1948).
Gonzalez, R. et al.,Digital Image Processing, Addison-Wesley Publishing Company, pp. 1-52 (1992).
Ortega J. M.; Rheinholdt, W.G.,Iterative Solution of Non-Linear Equations and Several Variables, Academic Press: San Diego, Ca, 1970, pp. 240-280.
W.E. Knowles Middleton,Vision Through Atmosphere, University of Toronto Press: Canada, Table of Contents; pp. 3-17; 60-136; 175-214 (1968).

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