Image analysis – Applications – Vehicle or traffic control
Reexamination Certificate
2004-09-23
2010-06-29
Bella, Matthew C (Department: 2624)
Image analysis
Applications
Vehicle or traffic control
C382S103000, C382S107000, C340S937000, C348S149000, C701S118000, C701S119000
Reexamination Certificate
active
07747041
ABSTRACT:
A system and method for automated estimation of average stopped delay at signalized intersections using digitized still image analysis of actual traffic flow is disclosed. The system and method includes digitizing images of an intersection and creating a line of pixels that acts as a virtual sensor in a traffic lane of interest. Background intensities of the pixel line on the traffic lane without vehicles are compared to pixel intensities on images with traffic. Once vehicles are identified, the present method and system provides for three alternative embodiments of methods for determining the stopped delay for an entire image or for a particular vehicle. Once the stopped delay for all relevant images or for all relevant vehicles is determined, the average stopped delay per vehicle is estimated.
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Hereth, Jr. William R.
Saito Mitsuru
Zundel Alan
Austin Rapp & Hardman
Bella Matthew C
Brigham Young University
Mackowey Anthony
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