基于小波变换的遥感影像变化检测

Change Detection for Remote Sensing Images Based on Wavelet Transform

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。为了减小照度和噪声对变化检测的影响，本文利用小波变换的多尺度分析特性，提出了基于小波变换构造差异影像的变化检测方法，并利用多套遥感影像数据进行了实验，验证了该方法的可行性。实验表明，该方法对照度和噪声影响具有较强的鲁棒性。

Change detection technology is widely used in damage assessment, environment monitoring , crops growing, coverage of forest. Based on the multiscale analysis capability of the wavelet transform, a change detection method is proposed by ways of wavelet transform constructing difference image in order to reduce the impact of illumi- nation and noise for change detection of remote sensing images. Experiment results show that this method is robust to the illumination and noise.