测绘科学技术学报2015，Vol.32Issue(6)：615-618,625,5.DOI:10.3969/j.issn.1673-6338.2015.06.014
利用动态规划半自动提取高分辨率遥感影像道路中心线
Semi-Automatic Road Centerline Extraction from High-Resolution Remote Sensing by Image Utilizing Dynamic Programming
摘要
Abstract
The conventional road extraction algorithms based on dynamic programming all define merit function di-rectly on the basis of road features on image domain. As the spectral characteristic of road varies, the conventional algorithms need to define merit function again, which is inflexible and unsuitable for high-resolution remote sensing image with various complex types of road. To address this problem, the road centerline extraction algorithm based on dynamic programming was proposed. Firstly, the thresholding and kernel density estimation are used to generate the road probability map, and then the merit function is defined based on road features in the road probability map. Lastly, the road centerlines are extracted by optimizing merit function using dynamic programming. Experimental results demonstrated that the proposed algorithm’ s sability in extracting road centerlines of various spectral types from high-resolution remote sensing image.关键词
高分辨率遥感影像/道路提取/道路中心线提取/动态规划/代价函数Key words
high-resolution remote sensing image/road extraction/road centerline extraction/dynamic program-ming/merit function分类
天文与地球科学引用本文复制引用
曹帆之,徐杨斌,朱宝山,李润生..利用动态规划半自动提取高分辨率遥感影像道路中心线[J].测绘科学技术学报,2015,32(6):615-618,625,5.基金项目
国家自然科学基金项目(41001262)。 （41001262）
