南腊地区遥感影像图上植被的褪色现象，认为是热蚀变的反映，可以作为找矿的间接标志。
In Nanla area, the vegetation colour anomaly on remote sensing image is a reflection of the hydrothermal alteration, which can be regarded as an indirect indication in ore prospecting.
针对这个现状，本文从实际生产出发，介绍了如何在导航电子地图生产制作中利用遥感影像图进行数据制作和信息补充，从而提高生产效率，同时阐述了利用遥感影像进行电子地图更新所面临的问题。
Based on the analysis of existing problem, we introduced a new way that can advance the production efficiency, that is use the remote sensing image to product map data and extract information.
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