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ISPRS Int. J. Geo-Inf. 2017, 6(12), 403; https://doi.org/10.3390/ijgi6120403

Extraction of Road Intersections from GPS Traces Based on the Dominant Orientations of Roads

1
School of Resource and Environmental Sciences, Wuhan University, 129 Luoyu Road, Wuhan 430079, China
2
Collaborative Innovation Centre of Geo Spatial Technology, Wuhan University, 129 Luoyu Road, Wuhan 430079, China
*
Author to whom correspondence should be addressed.
Received: 25 October 2017 / Revised: 22 November 2017 / Accepted: 7 December 2017 / Published: 10 December 2017
(This article belongs to the Special Issue Mapping for Autonomous Vehicles)
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Abstract

Many studies have used Global Navigation Satellite System (GNSS) traces to successfully extract segments of road networks because such data can be rapidly updated at a low cost. However, most studies have not focused on extracting intersections, which are indispensable parts of road networks in terms of connectivity. However, extracted intersections often present unsatisfactory precision and misleading connectivity. This study proposes a novel method for extracting road intersections from Global Position System (GPS) trace points and for capturing intersections with better accuracy. The key to improving the geometric accuracy of intersections is to identify the dominant orientations of road segments around intersections, merge similar orientations and maintain independent conflicting orientations. Extracting intersections by aligning the dominant orientations can largely reduce location offsets and road distortions. Experiments are performed to demonstrate the increased accuracy and connectivity of extracted road intersections by the proposed method. View Full-Text
Keywords: road segments; extraction of intersections; dominant orientation; GNSS; GPS traces road segments; extraction of intersections; dominant orientation; GNSS; GPS traces
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Li, L.; Li, D.; Xing, X.; Yang, F.; Rong, W.; Zhu, H. Extraction of Road Intersections from GPS Traces Based on the Dominant Orientations of Roads. ISPRS Int. J. Geo-Inf. 2017, 6, 403.

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