Adaptive lane line detection and warning algorithm based on dynamic constraint

The lane line detection algorithm is highly sensitive to the environment. And the selection of parameters is greatly affected by human subjective factors. Therefore, the concept of adaptive and dynamic constraint is introduced into the lane line detection algorithm. The evaluation function is set based on the detected information. A high precision lane line detection algorithm with supervision and warning mechanism is proposed. Firstly, the Canny operator gradient calculation method is improved by using eight neighborhood models. And by setting multi-level threshold instead of double threshold detection method, the algorithm’s adaptability is improved. Secondly, the concept of dynamic region of interest is proposed. The detection region of Canny operator is constrained, the environment interference to the algorithm is reduced. Finally, lane line information is included in the supervision and correction warning mechanism. And the early warning is given to drivers. The experimental results show that the algorithm is of high accuracy, real-time and adaptability.

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