不同年份的Radarsat与TM数据融合探测土地利用变更

常规的土地利用变更信息的遥感获取方式有分类后比较法和逐像元比较法/图像增强法。本文使用不同年份的遥感数据进行融合来探测土地利用变更信息,针对本文使用的雷达遥感数据的特点,本文采用改进的IHS变换法进行融合,对融合后图像的灰度进行分析,结果表明,融合图像的灰度既不同于融合前的Radarsat,又不同于融合前的TM,变更信息非常明显。

Detecting Land - use Change Using Radarsat and Multi - year TM Images

Generally, there are two kinds of remote sensing techniques to detect land-use change and they are post classification and pixel to pixel comparison. This study used multi-source remote sensing data of multi year to detect land-use change. This paper brought forward an improved fusion method on basis of IHS transformation, which gave weight to TM and Radarsat image and to calculate replacement of the variable intensity. The result of analyzing gray value of the fused imagery and non-fused imagery showed that gray value of the fused image was different from the Radarsat image, and also different from the TM image. Changed informaton was very obvious in the fused image.