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International Journal of Automotive Technology > Volume 17(3); 2016 > Article
International Journal of Automotive Technology 2016;17(3): 483-491.
doi: https://doi.org/10.1007/s12239-016-0050-9
VEHICLE DISTANCE ESTIMATION USING A MONO-CAMERA FOR FCW/AEB SYSTEMS
J. HAN1, O. HEO1, M. PARK1, S. KEE1, M. SUNWOO2
1Mando
2Hanyang University
ABSTRACT
For robust vision-based forward collision warning (FCW) and autonomous emergency braking (AEB) systems, not only reliable detection performance including high detection rate and low false positives but also accurate measurement output of a target vehicle is required. Especially, in order to reduce false alarm or activation of FCW/AEB systems, the systems require the precise measurement output of a target object, such as position, velocity, acceleration, and time-to-collision (TTC). In this study, we developed a measurement estimation algorithm of a target vehicle using a monocular camera. This method estimates two cases of vehicle widths for a target vehicle by using the detected lane information and a pin-hole camera model. After that, the position, velocity, acceleration, and TTC of a target vehicle are estimated by using a Kalman filter for the each estimated vehicle width. To improve robustness, the both estimation results using the detected lane information and the pinhole camera model are fused. This estimation algorithm was evaluated and compared with the state-of-the-art technology. As a result, the proposed measurement output estimation method can improve the performance of the FCW/AEB systems.
Key Words: Vehicle detection, Measurement output, Distance estimation, Time-to-collision (TTC), Camera
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