Optics: measuring and testing – For light transmission or absorption – Of fluent material
Reexamination Certificate
2006-03-21
2006-03-21
Rosenberger, Richard A. (Department: 2877)
Optics: measuring and testing
For light transmission or absorption
Of fluent material
Reexamination Certificate
active
07016045
ABSTRACT:
A visibility measurement system that computes relative visibility by comparing an images of an environment against a benchmark image. A sensing device receives an image and a digital conversion system maps the image into a two-dimensional data array. A processor converts the digital data to a value that represents visibility by identifying a region in the image that has a uniform distance from the sensing device over time, computing a benchmark visibility index for the region as a summation of measurable visual characteristics that influence visibility in the region under a benchmark environmental condition, computing a second visibility index for a second environmental condition, and computing a relative visibility value as the ration of the second visibility index in relation to the benchmark visibility index.
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: 6085152 (2000-07-01), Doerfel
patent: 6128088 (2000-10-01), Nishiwaki
patent: 3801368 (1989-07-01), None
Brooks, C.E.P. et al.,Glossary of Meteorology, American Meteorological Society, Boston, Massachusetts, 7 pages (1959).
Duntley, S., “The Reduction of Apparent Contrast by the Atmosphere,”Journal of the Optical Society of America, vol. 38, No. 2, pp. 179-191 (Feb. 1948).
Gonzalez, R. C. et al., “Digital Image Processing, Chapter 1 and Digital Image Fundamentals, Chapter 2,” pp. 1-19 and 21-52 (Jun. 1992).
Ortega, J.M. et al., “Minimization Methods, Chapter 8,”Interative Solution of Nonlinear Equations in Several Variables, pp. 240-278 (1970).
Knowles Middleton, W.E.,Vision Through the Atmosphere, Table of Contents (pp. vii and viii), Chapter 1 (pp. 3-17), Chapters 4-6(pp. 60-136), Chapter 9 (pp. 175-214) (1952).
Takeuchi, M., “Vertical Profile and Horizontal Increase of Drift-Snow Transport,”Journal of Glaciology, vol. 26, No. 94, pp. 481-492 (1980).
U.S. Department of Transportation, Federal Highway Administration, “Environmental Sensor Systems for Safe Traffic Operations,” pp. 2 cover pages, i-x, and 1-150 (Oct. 1995).
Kwon, T.M., “An Automatic Visibility Measurement System Based on Video Cameras,” 2 cover sheets, i-v, and 1-62 (Sep. 1998).
Regents of the University of Minnesota
Rosenberger Richard A.
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