形状先验和图割的高分辨率遥感影像道路段提取

摘要

A road connection strategy and a road extraction method is studied from high resolution images .Here are the steps:firstly , filter images to form characteristics to be segmented ;secondly ,detect road candidate points from characteristics based on graph cuts theory ;thirdly , process road candidate points with the line segment match method to achieve original road strips;finally ,connect original road strips based on graph cuts theory ,shape priors and dynamic segmentations to obtain whole roads . Experiments testify the effectiveness of the road connection strategy and the road extraction method respectively .%探索一种连接初始道路段的策略，并在该连接策略基础上研究从高分辨率影像中提取道路段的方法。道路提取流程包括：首先滤波预处理遥感影像获取待分割特征矢量；接着基于图割理论从待分割特征矢量中检测道路候选点；再通过直线匹配法处理道路候选点以获得初始道路段；最后基于图割理论和形状先验知识，并结合动态外推的思路连接初始道路段，以获得完整道路。试验证明了本文连接策略和道路提取算法的有效性。