Image analysis – Applications – Vehicle or traffic control
Reexamination Certificate
2011-01-25
2011-01-25
Le, Vu (Department: 2624)
Image analysis
Applications
Vehicle or traffic control
C701S001000
Reexamination Certificate
active
07876926
ABSTRACT:
A method of lane marker detection and detection fitting is provided for lane tracking. A lane marker is modeled and split into left and right steps. A filter response is calculated from a cumulative row sum, and normalized for filter pixel size, lane marker brightness and road brightness. A lane marker response is peak detected for positive and negative peaks and checked for having a magnitude above a threshold and being a local peak in a five point neighborhood. A Hough transform is extended to multiple planes to use lane marker features to determine a best line. Lane marker features include a mean and variance of lane marker brightness, lane marker width, lane marker parallelism to a host vehicle direction of travel, and consistence with a predicted lane marker characteristic. A closest lane marker line to a host vehicle is identified, and refitted to account for any curvature.
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Hamilton Lisa R.
Schiffmann Jan K.
Schwartz David A.
Abdi Amara
Delphi Technologies Inc.
Funke Jimmy L.
Le Vu
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