It is quite challenging to improve the accuracy of the measurement point coordinate when using the double forward intersection method to measure the coordinates of ground objects in the traditional digital photogrammetry system. In this paper, a method is proposed to improve the coordinate accuracy of measuring points using multi-slice forward intersection mapping. The intersection images are provided for multiple mapping through the unmanned aerial vehicle (UAV) oblique photogrammetry system to obtain high overlap and multi-angle oblique image data. The experimental results show that the accuracy qualification rate of marking points is high. The total rate of standard-reaching is up to 45.14%. The proposed method can improve the coordinate accuracy of aero photogrammetry by 8.7% using multi-view images obtained by UAV oblique photogrammetry.

在传统的数字摄影测量系统中，使用双前向相交法测量地面物体的坐标时，提高测量点坐标的精度非常具有挑战性。本文提出了一种利用多层正向相交映射提高测量点坐标精度的方法。通过无人飞行器（UAV）斜摄影测量系统提供相交图像以进行多重映射，以获得高重叠度和多角度斜图像数据。实验结果表明，标记点的准确率较高。达到标准的总比率高达45.14％。利用无人机倾斜摄影测量获得的多视角图像，该方法可以将航空摄影测量的坐标精度提高8.7％。