遥感影像提取冰川信息方法研究

Study on the Remote Sensing Image Extraction Methods in Glaciers Area

以天山博格达峰地区为例,综合目视解译以及计算机自动解译,主要介绍具有代表性的冰川信息提取方法。对各种方法的原理、特点、优势与限制进行了分析、对比、并展望下一步研究方向。在冰川边界提取研究中,目视解译精度高,仍是冰川解译研究中重要的手段。传统基于光谱的解译方法各有优缺,应用于冰川信息的提取需借助于人工修正;基于象元的遥感解译方法应尝试应用到冰川的解译中。

This paper used the manual interpretation method and RS computer automatic interpretation method to extract the glacier boundary in Bogeda region, Tianshan Mountain. The results showed that：Manual interpretation method remains the best tool for extracting glacier area information; Classification methods based on threshold band ratios or NDSI have proven to be accurate and robust methods for clean ice, but not for the debris-covered glaciers;traditional spectral analysis methods still needs to improve for further study.