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：2008
卷号：XXXVII Part B6b
页码：335-338
出版社：Copernicus Publications
摘要：Upgrading fundamental GIS databases for navigation use is an important work for providing location-based services In this paper, we present a process for extraction road networks in urban city from panchromatic IKONOS imagery, which is one of the steps in a framework for extracting the roads for the upgrading of the existing data of a fundamental topographic database. Our four-stage process is including image classification based on SVM, road orientation estimation based on edge direction histogram, directional filter for the classified road pixels and the intersection extraction of road networks. An initial result is shown in this paper. Our next research may include matching of the extracted road nodes with the vector data in fundamental databases
关键词：Road Extraction; Updating; Upgrading; Navigation; High Resolution
