Catalogue of orthoimages Year 1997-20 020.5 m.

Catalogue of orthoimages obtained by rectification of aerial images, within the visible spectrum, on digital model derived from cartography 1:5,000.本数据集为正射影像（orthoimage）目录，系以1:5000比例尺测绘生成的数字模型为基准，对可见光谱范围内的航空影像进行正射纠正后所得。