System for automated determination of retroreflectivity of road signs and other reflective objects
First Claim
1. A method for displaying and manipulating retroreflectivity data for a reflective surface disposed along a roadway comprising:
- determining a plurality of retroreflectivity values for the reflective surface;
generating a three-dimensional representation of retroreflectivity values of the reflective surface; and
displaying the three-dimensional representation of retroreflectivity values.
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0 Petitions
Accused Products
Abstract
A system for the automated determination of retroreflectivity values for reflective surfaces disposed along a roadway repeatedly illuminates an area along the roadway that includes at least one reflective surface using a strobing light source. Multiple light intensity values are measured over a field of view which includes at least a portion of the area illuminated by the light source. A computer processing system is used to identifying a portion of the light intensity values associated with a reflective surface and analyze the portion of the light intensity values to determine at least one retroreflectivity value for that reflective surface.
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Citations
17 Claims
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1. A method for displaying and manipulating retroreflectivity data for a reflective surface disposed along a roadway comprising:
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determining a plurality of retroreflectivity values for the reflective surface; generating a three-dimensional representation of retroreflectivity values of the reflective surface; and displaying the three-dimensional representation of retroreflectivity values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for simulating a virtual drive-through that includes at least one reflective surface disposed along a roadway comprising:
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determining a plurality of retroreflectivity values for each reflective surface; and simulating a virtual drive-through along the roadway using the plurality of retroreflectivity values to simulate reflections from each reflective surface disposed along the roadway during the virtual drive-through. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification