We describe a novel system for vehicle speed estimation from videos captured in urban roadways. Our system uses text detection to locate the license plates of passing vehicles, which are then used to select stable features for tracking. The tracked features are then filtered and rectified for perspective distortion. Vehicle speed is estimated by comparing the trajectory of the tracked features to known real world measures. In experiments performed on videos captured under real operation conditions, our system attained a precision of 0.87 and a recall of 0.92 for license plate detection. Vehicle speeds were estimated with an average error of 0.59 km/h, staying inside the +2/-3 km/h limit, determined by regulatory authorities in several countries, in over 75% of the cases.
Vehicle speed estimation by license plate detection and tracking
2014-05-01
736567 byte
Conference paper
Electronic Resource
English
Speed-vision: speed measurement by license plate reading and tracking
Tema Archive | 2001
|Speed-Vision: speed Measurement by License Plate Reading and Tracking
British Library Conference Proceedings | 2001
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