低空立体像对的严密相对定向

Rigorous Relative Orientation of Low-altitude Stereo Images

本文针对传统航空摄影测量相对定向方法在低空影像处理中存在局限的问题,提出了低空立体像对相对定向严密解法,推导出适用于低空立体像对相对定向的误差方程。该方法首先利用直接解法解算出相对定向元素的初值,然后代入低空立体像对相对定向误差方程迭代精化,实现相对定向元素值精确和高效地严密解算。实验验证了该方法在低空影像相对定向中精度比传统的相对定向方法和直接解法精度更高,对于诸如无人机等作为平台的低空摄影测量立体像对相对定向解算具有较强的实用性。

To improve the accuracy and efficiency of relative orientation for low-altitude stereo images,firstly,the initial value is obtained in direct solution,then the value is refined by iterative solution in the error equation of the relative orientation for low-altitude stereo images.Experimental results show that the rigorous solution of relative orientation can improve the precision of relative orientation compared with the traditional relative orientation and direct solution,and maybe practical in low-altitude photogrammetry,such as UAV photogrammetry etc.