With the development of computer technology and the popularity of Internet,volunteered geographic information(VGI)as a new geographic information model has received more and more at-tention from scholars and gradually becomes an important supplement to professional geographic in-formation.The representative OpenStreetMap(OSM)has hindered the application of OSM in many projects due to loose mapping standards and non-professional data editing,and its reliability and ap-plicability have become the most interesting topics for researchers.This paper presents an OSM road data quality evaluation model based on reference data,which is studied in terms of completeness,subject accuracy and location accuracy,as a method to assess the applicability of OSM data.In this study,the OSM data quality evaluation study is carried out with OSM road data in some areas of Zhengzhou City,and the differences and associations in the spatial distribution of quality elements are derived.The results show that,compared with authoritative data,the OSM dataset has 97%length completeness,98%classification accuracy of high-grade roads,over 88%name accuracy,while the average overlap percentage between the two datasets is over 90%,with the lowest result being less than 40%for name completeness.The overall quality is relatively high.
volunteer geographic informationOpenStreetMapspatial data quality elementsquali-ty assessment
国家科技期刊平台
NSTL
万方数据
