利用CCD相机进行南极站积雪覆盖监测的方法

Method of Monitoring Snow Cover in the Antarctic Great Wall Station Based on CCD Camera

针对南极考察站区小尺度高时相的积雪覆盖信息目前还没有成熟的监测手段这一问题,详尽地介绍了利用CCD相机进行积雪覆盖监测的方法,包括对相片分割阈值的选取、感兴趣区(ROI)的划定以及像素点的坐标转换等技术流程;计算和分析了2014年8月的南极长城站区积雪覆盖变化情况;并在此基础上,对未来站区附近积雪动态变化监测研究做了展望。

There is no high effective ways to monitor snow cover in Antarctic Region in small scare and high temporal resolution.This paper introduced the whole technological process of monitoring snow cover in detail using CCD camera.Besides the paper also discussed how to select the segmentation threshold,the region of interested and how to transform coordinate at pixel level.On the basis of these,the paper calculated monthly time-lapse photos and analyzed the variation of snow cover.Finally,the paper put forward some improvements and made a prospect of monitoring snow cover in other polar stations.