激光与光电子学进展, 2020, 57 (6): 061005, 网络出版: 2020-03-06
基于改进最大期望聚类的遥感影像道路提取算法 下载: 999次
Road Extraction Algorithm for Remote Sensing Images Based on Improved Expectation-Maximization Clustering
图像处理 道路提取 数学形态学 最大期望聚类 图像分割 image processing road extraction mathematical morphology expectation-maximization clustering image segmentation
摘要
针对目前高分辨率遥感影像道路提取准确性不高的问题,提出一种基于改进最大期望(EM)聚类的遥感影像道路提取算法。首先通过形态学预处理来去除道路上的干扰信息,在此基础上通过改进EM聚类自动确定分割区域数目,完成影像分割,最后结合轮廓检测和灰度直方图阈值化完成遥感影像道路的提取。实验结果表明,所提算法能有效屏蔽道路上的噪声,提取出主干道路信息,该方法的准确率达到90%以上,冗余度较低。
Abstract
The accuracy of current road extraction algorithms for high resolution remote sensing images is low. Aiming at this problem, a road extraction algorithm for remote sensing images based on the improved expectation-maximization (EM) clustering is proposed. First, the morphological preprocessing is carried out to remove the interference information from the road. Then, the improved EM clustering is applied to determine the number of segmentation regions and segment the images automatically. And the extraction of roads from remote sensing images is finally completed through the contour detection and gray histogram thresholding. Experimental results show that the proposed algorithm can effectively screen the noise on the road and extract the main road information, with high accuracy of over 90% and low redundancy.
张宗军, 杨风暴. 基于改进最大期望聚类的遥感影像道路提取算法[J]. 激光与光电子学进展, 2020, 57(6): 061005. Zongjun Zhang, Fengbao Yang. Road Extraction Algorithm for Remote Sensing Images Based on Improved Expectation-Maximization Clustering[J]. Laser & Optoelectronics Progress, 2020, 57(6): 061005.