路网更新的轨迹-地图匹配方法

发布时间：2018-05-12 05:49

本文选题：地图匹配 + 问题路段　；参考：《测绘学报》2017年04期

【摘要】：全面准确的路网信息作为智慧城市的重要基础之一,在城市规划、交通管理以及大众出行等方面具有重要意义和价值。然而,传统的基于测量的路网数据获取方式往往周期较长,不能及时反映最新的道路信息。近几年,随着定位技术在移动设备的广泛运用,国内外学者在研究路网信息获取时逐渐将视野转向移动对象的轨迹数据中所蕴含的道路信息。当前,基于移动位置信息的路网生成和更新方法多是直接面向全部轨迹数据施加道路提取算法,在处理大规模轨迹或者大范围道路时,计算量极大。为此,本文基于轨迹地图匹配技术,提出一种采用"检查→分析→提取→更新"过程的螺旋式路网数据更新策略。其主要思想是逐条输入轨迹,借助HMM地图匹配发现已有路网中的问题路段,进而从问题路段周边局部范围内的轨迹数据中提取并更新相关道路信息。该方法仅在局部范围内利用少量轨迹数据来修复路网,避免了对整个轨迹数据集进行计算,从而有效减少了计算量。基于OpenStreetMap的武汉市区路网数据以及武汉市出租车轨迹数据的试验表明,本文提出的路网更新方法不仅可行,而且灵活高效。
[Abstract]:As one of the important bases of intelligent city, comprehensive and accurate road network information is of great significance and value in urban planning, traffic management and mass travel. However, the traditional road network data acquisition method based on survey often has a long period and can not reflect the latest road information in time. In recent years, with the wide application of positioning technology in mobile devices, scholars at home and abroad have gradually shifted their vision to the road information contained in the track data of moving objects when they studied road network information acquisition. At present, road network generation and updating methods based on moving position information are directly oriented to all track data and impose road extraction algorithm. When dealing with large-scale or large-scale roads, the computation is very heavy. Therefore, based on the track map matching technology, this paper proposes a spiral road network data updating strategy based on the process of "check analysis and update". The main idea is to input the track one by one and find out the problem section in the existing road network by using HMM map matching, and then extract and update the relevant road information from the track data of the local area around the problem road. In this method, only a small amount of track data is used to repair the road network in the local range, thus avoiding the calculation of the whole track data set, thus effectively reducing the calculation amount. The test of Wuhan urban road network data based on OpenStreetMap and Wuhan taxi track data shows that the road network renewal method proposed in this paper is not only feasible but also flexible and efficient.
【作者单位】：中南大学地球科学与信息物理学院;武汉大学测绘遥感信息工程国家重点实验室;地球空间信息技术协同创新中心;
【基金】：国家自然科学基金(41001296;60903035)~~
【分类号】：P208

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