测绘学报 ›› 2021, Vol. 50 ›› Issue (11): 1546-1557.doi: 10.11947/j.AGCS.2021.20210255

• 智能驾驶环境感知 • 上一篇    下一篇

车辆轨迹与遥感影像多层次融合的道路交叉口识别

李雅丽, 向隆刚, 张彩丽, 吴华意, 龚健雅   

  1. 武汉大学测绘遥感信息工程国家重点实验室, 湖北 武汉 430079
  • 收稿日期:2021-05-11 修回日期:2021-09-24 发布日期:2021-12-07
  • 通讯作者: 向隆刚 E-mail:geoxlg@whu.edu.cn
  • 作者简介:李雅丽(1992—),女,博士生,研究方向为融合车辆轨迹与遥感影像的道路信息提取。
  • 基金资助:
    国家自然科学基金(42071432;41771474)

Road intersection recognition based on a multi-level fusion of vehicle trajectory and remote sensing image

LI Yali, XIANG Longgang, ZHANG Caili, WU Huayi, GONG Jianya   

  1. State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China
  • Received:2021-05-11 Revised:2021-09-24 Published:2021-12-07
  • Supported by:
    The National Natural Science Foundation of China (Nos. 42071432;41771474)

摘要: 交叉口是构成道路网络的基础与核心要素,起到了连接道路和承载转向的重要作用。在城市路网中,交叉口不仅数量众多、形态多样,而且结构复杂、大小不一。单一数据源对于道路交叉口的描述能力有限,难以做到道路交叉口的全面、精确识别。为此,本文设计了一种从车辆轨迹与遥感影像中识别道路交叉口的多元集成方法。首先,集成形态学处理、密度峰值聚类与张量投票提取种子交叉口,将其作为小样本集;然后,据此采用协同训练机制,分别构建基于深度卷积网络,面向车辆轨迹与遥感影像的交叉口分类器;最后,综合两模型优点,形成道路交叉口的集成分类模型。本文方法在多个层次上融合车辆轨迹与遥感影像关于交叉口的互补性描述特征,提出半监督式交叉口提取技术,无须人工标注即可有效识别复杂多样的道路交叉口。基于武汉市出租车轨迹和遥感影像的试验表明,本文方法在无人工标注样本的前提下,道路交叉口提取的准确率超过93%,召回率达到87%。

关键词: 道路交叉口, 车辆轨迹, 遥感影像, 协同训练, 自动标注

Abstract: Road intersections are important components of a road network, which are not only numerous and diverse in shape, but also complex in structure and different in size. It is difficult to recognize comprehensive and accurate road junctions based on single data source, as its limited describe information. To this end, this paper designs a multiple integration method to identify road intersections from vehicle trajectories and remote sensing images. Firstly, based on the unsupervised idea, a method combining morphological processing, density peak clustering and tensor voting is proposed to extract the seed intersections, which is regarded as a small sample set. Based on it two intersection classifiers based on deep convolution network and oriented to vehicle trajectories and remote sensing images are constructed by using collaborative training mechanism, and finally, the advantages of the two models are combined to form an integrated classification model of road intersections. In this paper, a semi supervised intersection extraction technology is proposed by fusing the complementary description features of vehicle trajectories and remote sensing images on multiple levels, which can effectively identify complex and diverse road intersections without manual labeling. Experiments based on Wuhan taxi trajectories and remote sensing images show that the accuracy of this method is more than 93% and the recall rate is 87% without manually labeled samples.

Key words: road intersection, vehicles trajectory, remote sensing image, co-training, automatic activation

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