倾斜多视影像空中三角测量的精度分析

摘要

针对目前国内对倾斜多视影像空中三角测量的精度缺少定量分析的问题,利用控制点数据对倾斜影像的空三结果进行验证.以倾斜数字航摄仪TOPDC-5在安阳测区获取的影像数据为例,设计了3组实验,分别对垂直影像、倾斜影像、垂直影像加倾斜影像进行空三加密处理,并对3组实验的结果进行对比分析.实验结果表明,倾斜影像参与的空中三角测量,其高程和平面精度相对于垂直影像都有所降低,但仍能满足传统摄影测量的限差要求.%Aiming at the lack of quantitative analysis for aerial triangulation of oblique imagery,this paper validated the aerial triangulation result by control points.It used the data collected by oblique digital camera TOPDC-5 in Anyang.Three experiments have been designed for vertical image,oblique image,and combined vertical and oblique image respectively and the result of experiments have been analysed.It proves that the oblique image will reduce the precision of plane and height simultaneously compared to traditional photogrammetry.