文章基本信息

标题：RDQS: A Geospatial Data Analysis System for Improving Roads Directionality Quality
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作者：Salama, Abdulrahman ; Hampshire, Cordel ; Lee, Josh 等
期刊名称：ISPRS International Journal of Geo-Information
电子版ISSN：2220-9964
出版年度：2022
卷号：11
期号：8
页码：1-20
DOI：10.3390/ijgi11080448
语种：English
出版社：MDPI AG
摘要：With the increasing availability of smart devices, billions of users are currently relying on map services for many fundamental daily tasks such as obtaining directions and getting routes. It is becoming more and more important to verify the quality and consistency of route data presented by different map providers. However, verifying this consistency manually is a very time-consuming task. To address this problem, in this paper we introduce a novel geospatial data analysis system that is based on road directionality. We investigate our Road Directionality Quality System (RDQS) using multiple map providers, including: Bing Maps, Google Maps, and OpenStreetMap. Results from the experiments conducted show that our detection neural network is able to detect an arrow’s position and direction in map images with >90% F1-Score across each of the different providers. We then utilize this model to analyze map images in six different regions. Our findings show that our approach can reliably assess map quality and discover discrepancies in road directionality across the different providers. We report the percentage of discrepancies found between map providers using this approach in a proposed study area. These results can help determine areas needs to be revised and prioritized to improve the overall quality of the data within maps.
关键词：computer vision; roads; geospatial analysis; geospatial data; smart city; IoT; convolutional neural networks; arrow detection; arrow directionality; Detectron2; rcnn; faster-rcnn