基于多时相遥感图像灰度差值法的地表变化检测  

Change Detection of Urban Surface Based on Image Subtracting Operation between Multi-temporal Images

作　　者：杨希[1] 刘国祥[1] 秦军[1] 陈于林[2] 王鹏[1] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031 [2]四川省国土勘测规划研究院,四川成都610031

出　　处：《四川测绘》2008年第3期99-103,共5页Surveying and Mapping of Sichuan

摘　　要：为快速利用多时相遥感数据实现地表信息的变化检测,探讨了使用多时相遥感图像的灰度差值法来进行地表变化检测。计算差值图像的均值和标准差,建立其数学关系,确定变化阈值;通过差值运算后处理方法获得变化信息,并结合地表信息的光谱反射特性,进行城市地表信息的变化检测。In order to process expediently change detection of earth＇s surface utilizing multi-temporal remote sensing data, this paper discusses the method of image subtracting operation between multi-temporal images to obtain change information of earth＇s surface. The change threshold of subtraction image is obtained from the statistic of mean and standard deviation in the post processing. Then, combining with spectral reflectance signature of urban surface, change detection can be implemented.

关 键 词：多时相遥感 地表变化检测 图像灰度差值法 差值运算后处理 

分 类 号：P237[天文地球—摄影测量与遥感]