空三加密在数字摄影测量中的精度分析

Accuracy Analysis on Encryption in Digital Photogrammetry

摘要:

该文结合章丘市1∶2000地形图绘制项目的具体实践，认为航空摄影测量产品误差来源主要为空三加密这一重要工序，影响空三加密精度的因素主要为:影像质量(分辨率、清晰度、重叠度)、像控点选取及精度、加密点的选取及加密解算方法、加密人员的经验等。找出影响空三加密精度的主要因素及解决办法，结合生产实践解决了1∶2000地形图绘制空三加密精度问题。

Abstract:

Accompanying with the development of electronic technologies, traditional method can not meet the demand for making maps. Remote sensing adjustment of images technology based on high resolution satellite remote sensing phantom and the controlling points has already obtained the preliminary application and the development. But the precision of products still limited the development and application of airphoto surveying technology, while image controlling precision in the field and spatial three encryption precision indoor are the main factors affected the precision of products.