基于FPGA的车道偏离报警系统关键技术研究

A Research on Key Technologies for Lane Departure Warning System Based on FPGA

提出一种基于单目视觉的车道偏离报警系统,用于驾驶辅助系统中帮助驾驶员预防和避免事故的发生。该系统基于现场可编程门阵列而实现,所采用的主要关键技术包括自动曝光技术以改善采集图像的质量,并行的Hough变换技术以鲁棒地实现实时车道线检测和基于车道线夹角法的简单而有效的报警策略。实验结果显示了本系统在各种道路场景中的鲁棒性和较高的检测速度及应用价值。

A monocular vision-based lane departure warning system (LDWS) is proposed for being used in driver assistance system (DAS) to help driver prevent and avoid accidents. The system is implemented based on field programmable gate array (FPGA) with the key technologies adopted covering adaptive exposure technique for improving the quality of captured images, parallel Hough transform for robustly realizing real-time lane mark detection and simple and effective warning strategy based on the intersection angle between running path and lane marks. The results of experiments demonstrate the robustness of the system in various road scenes and the high detection speed and application significance of the system proposed.