介绍了高分辨率遥感影像上道路的特征、模型和道路提取的基本思想，对已有的道路提取方法进行

了分析，并对道路提取问题进行思考，提出下一步的研究方向。-Introduced a high-resolution remote sensing image characteristics on the road, models and extract the basic idea of the road, on the existing road extraction methods were analyzed to reflect on the road extraction problem, propose future research directions.