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Automotive Engineering ›› 2023, Vol. 45 ›› Issue (8): 1468-1478.doi: 10.19562/j.chinasae.qcgc.2023.08.017

Special Issue: 智能网联汽车技术专题-感知&HMI&测评2023年

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Research on Semantic Segmentation of Uneven Features of Unpaved Road

Wenguang Wu(),Shuangyue Tian,Zhiyong Zhang,Bin Zhang   

  1. Changsha University of Science and Technology College,Changsha 410114
  • Received:2023-01-16 Revised:2023-02-21 Online:2023-08-25 Published:2023-08-17
  • Contact: Wenguang Wu E-mail:wwglq@csust.edu.cn

Abstract:

The complexity of uneven feature parameters of unpaved roadincreases the difficulty of extracting effective information for path planning and decision control of autonomous vehicles. Accurate semantic segmentation method can help simplify road uneven parameter information, improve the accuracy and efficiency of feature recognition, thus improve the safety and comfort of autonomous driving of vehicles. Therefore, this paper proposes a semantic segmentation method for uneven features of unpaved road to classify uneven features of different dimensions and elevation differences. Firstly, the Gaussian function is introduced to establish the expression model of unpaved road, and the automatic labeling method of uneven features is proposed and the simulation data set is constructed, making up the gap of unpaved road point cloud data set. Then, a semantic segmentation model of unpaved road uneven features is built. Based on multi-level feature extraction structure of Pointnet++, the semantic segmentation of non-paved road uneven features is realized for the first time. Finally, the sand table model of unpaved road features is established and the proposed method is used for verification of the measured data. The results show that the proposed method can accurately classify the road uneven characteristics, and has good robustness in data of different point cloud data densities and road surface ranges.

Key words: unpaved road, uneven features, Pointnet++, semantic segmentation, automatic driving