基于遥感影像的城市用地变化监测方法研究

Study on Change Detection Method of Urban Land Use Based on Remote Sensing Image

利用遥感技术进行动态变化监测是地理国情监测的重点研究内容之一,动态监测技术方法较多,笔者在对已有方法探讨的基础上,基于World View-2及资源三号遥感影像,提出了一种城市用地变化信息检测的多波段主成分分析方法。该方法通过线性变换生成互不相关的波段组合,对多波段主成分分析后的影像采用直方图统计法进行阈值分割,再经过滤波处理,去除干扰信息。研究结果表明,采用该方法提取两期遥感影像上的变化信息,可以实现动态变化监测。

Using remote sensing technology to dynamic monitoring is the important research content of geography national condition monitoring, there are already exist lots of methods. This article based on the remote sensing images of worldview2 and ZY3 and on the basis of summarized the existed methods, come up with a method of multiband principal component analysis. This method generates unrelated band combination by linear transformation, then the image using histogram statistic to threshold segmentation, and filter process to remove the interference information. By this way we extract the change information from the two remote sensing images and achieve the purpose of dynamic monitoring.