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本文介绍了可见光黑白航片的处理方法。通过光学的空间滤波将底片分为高频、中频、低频三张底片。再用它们作图象处理,可获得一张彩色象片。此种象片提高了地质构造及岩性的可解程度,并提取了矿产信息。密云某地区的处理象片上,可识别出大量断层及磁铁石英岩的分布与褶皱的地表形态。此方法有效性的关键在于:根据地质体与航片的特征正确选定滤波器的直径及曝光时间。
This article describes the treatment of visible black and white aerial photos. Through the optical space filter will be divided into high frequency, intermediate frequency, low frequency three negatives. Then use them for image processing, you can get a color image. This image enhances the solvability of geological formations and lithology and extracts mineral information. Miyun a region of the treatment of photos, you can identify a large number of faults and magnetite quartz rock distribution and folds of the surface morphology. The key to the effectiveness of this method lies in correctly selecting the diameter and the exposure time of the filter according to the characteristics of the geological body and the aerial photograph.