
FOLLOWUS
Lab of Visual Cognitive Computing and Intelligent Vehicle, Xi'an Jiaotong University, Xi'an 710049, China
E-mail:jrxue@xjtu.edu.cn
收稿:2016-12-29,
录用:2017-1-8,
纸质出版:2017-01
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薛建儒, 王迪, 杜少毅, 等. 无人车自主定位和障碍物感知的视觉主导多传感器融合方法[J]. 信息与电子工程前沿(英文), 2017,18(1):122-138.
Jian-ru XUE, Di WANG, Shao-yi DU, et al. A vision-centered multi-sensor fusing approach to self-localization and obstacle perception for robotic cars[J]. Frontiers of Information Technology & Electronic Engineering, 2017, 18(1): 122-138.
薛建儒, 王迪, 杜少毅, 等. 无人车自主定位和障碍物感知的视觉主导多传感器融合方法[J]. 信息与电子工程前沿(英文), 2017,18(1):122-138. DOI: 10.1631/FITEE.1601873.
Jian-ru XUE, Di WANG, Shao-yi DU, et al. A vision-centered multi-sensor fusing approach to self-localization and obstacle perception for robotic cars[J]. Frontiers of Information Technology & Electronic Engineering, 2017, 18(1): 122-138. DOI: 10.1631/FITEE.1601873.
人类驾驶与自主驾驶在对交通环境的理解方式上有着明显差别。首先,人主要通过视觉来理解交通场景,而机器感知需要融合多种异构的传感信息才能保证行车安全。其次,一个熟练的驾驶员可以轻松适应各种动态交通环境,但现有的机器感知系统却会经常输出有噪声的感知结果,而自主驾驶要求感知结果近乎100%准确。本文提出了一种用于无人车交通环境感知的视觉主导的多传感器融合计算框架,通过几何和语义约束融合来自相机、激光雷达(LIDAR)及地理信息系统(GIS)的信息,为无人车提供高精度的自主定位和准确鲁棒的障碍物感知,并进一步讨论了已成功集成到上述框架内的鲁棒的视觉算法,主要包括从训练数据收集、传感器数据处理、低级特征提取到障碍物识别和环境地图创建等多个层次的视觉算法。所提出的框架里已用于自主研发的无人车,并在各种真实城区环境中进行了长达八年的实地测试,实验结果验证了视觉主导的多传感融合感知框架的鲁棒性和高效性。
Most state-of-the-art robotic cars' perception systems are quite different from the way a human driver understands traffic environments. First
humans assimilate information from the traffic scene mainly through visual perception
while the machine perception of traffic environments needs to fuse information from several different kinds of sensors to meet safety-critical requirements. Second
a robotic car requires nearly 100% correct perception results for its autonomous driving
while an experienced human driver works well with dynamic traffic environments
in which machine perception could easily produce noisy perception results. In this paper
we propose a vision-centered multi-sensor fusing framework for a traffic environment perception approach to autonomous driving
which fuses camera
LIDAR
and GIS information consistently via both geometrical and semantic constraints for efficient self-localization and obstacle perception. We also discuss robust machine vision algorithms that have been successfully integrated with the framework and address multiple levels of machine vision techniques
from collecting training data
efficiently processing sensor data
and extracting low-level features
to higher-level object and environment mapping. The proposed framework has been tested extensively in actual urban scenes with our self-developed robotic cars for eight years. The empirical results validate its robustness and efficiency.
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