变化检测技术被广泛应用于灾情估计、环境监测、农作物生长、森林覆盖等多个领域。为了自动获取变化检测的阈值,本文仔细分析了最大类间方差的方法和原理,改进了二维最大类间方差方法在变化检测中的应用,并利用多套遥感影像数据进行了实验,实验表明了该方法的可行性和有效性。 Change detection technology is widely used in disaster prediction, environmental monitoring, crop growth, forest cover and other fields. In order to obtain the threshold of change detection automatically, this paper carefully analyzed the method and principle of maximum inter-class variance, improved the application of two-dimensional maximum inter-class variance method in the change detection and conducted experiments with multiple sets of remote sensing image data. Experiments show that The feasibility and effectiveness of this method.