志愿者地理信息中天桥的自动识别方法

发布时间：2018-01-25 02:50

本文关键词： 天桥结构识别支持向量机志愿者地理信息　出处：《测绘学报》2017年02期 　论文类型：期刊论文

【摘要】：基于天桥的几何与属性特征,提出了一种志愿者地理信息中自动识别天桥的方法。天桥从几何结构上可分为主桥和附属设施两个部分,主桥部分特征鲜明,可以视为两类分类问题,依据其几何特征和属性特征构建特征空间,利用支持向量机的方法进行识别;附属设施部分可依据已识别的天桥主桥,按照路段的长度、属性等判定规则进行识别,从而完成整个天桥的自动识别。以北京市OpenStreetMap(osm)数据进行试验验证的结果表明,本文提出的方法能有效地识别出志愿者地理信息中的典型天桥结构,可以为志愿者地理信息道路网的多尺度建模与化简、步行导航等提供帮助。
[Abstract]:Based on the geometric and attribute features of flyovers, a method of automatically identifying flyovers in volunteer geographic information is proposed. The flyovers can be divided into two parts: the main bridge and the ancillary facilities. It can be regarded as two kinds of classification problems. The feature space is constructed according to its geometric features and attribute features, and the support vector machine (SVM) method is used to identify them. The accessory facilities part can be recognized according to the identified main bridge of the flyover according to the length and attribute of the section of the road. In order to complete the automatic identification of the whole flyover, the result of test verification with the data of OpenStreetMaposm in Beijing shows that. The method proposed in this paper can effectively identify the typical flyover structure in the volunteer geographic information, and can provide help for multi-scale modeling and simplification of volunteer geographic information road network, walking navigation and so on.
【作者单位】：信息工程大学地理空间信息学院;96633部队;69027部队;
【基金】：国家863项目(2012AA12A404) 国家自然科学基金(41571399;41201391;41071297;41201469)~~
【分类号】：P208
【正文快照】： 新疆乌鲁木齐830002天桥是路口或交通繁忙路线上的跨桥,一般用来供行人或非机动车辆跨越道路。随着我国一线城市交通压力的不断增大,天桥作为一种解决人车矛盾的立体交通分离方式,作用日益突出,成为城市主干道路以及主要交叉路口不可或缺的一部分,也是步行导航、路径规划和可

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