期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2010
卷号：XXXVIII - Part 1
出版社：Copernicus Publications
摘要：Building an accurate 3D road database is important for many future advanced auto motive applications. Intermap is in the process of collecting 2D road networks based on its orthorectified radar imagery and extracting elevations from its IFSAR-derived DEMs. The current 2D collection process is mainly manual, while the elevation assignment to the 2D road vectors is highly automated. This paper discusses the challenges that we are facing in terms of assigning elevations to 2D road vector and the approaches that we have been taking to building 3D road geometry based on IFSAR-derived DEMs. Validation results from various areas in Europe have shown that our 3D road products are vertically accurate with an overall RMSE in the range of 1.0 to 2.0m depending on the complexity of the area
