射线垂距法进行象对相对定向的理论与方法

在解析空中三角测量中,其象点坐标的量测误差是不可避免的。所谓同名点并非真正同名,象对左右射线束里的相应光线不可能同时相交。通过移动和转动一个线来的位置,可使对应射线间的垂直距离平方和最小,从而决定出最可能的相应交点,作为相对定向的结果。象对中的点数不限于六个,可增多到十四个或更多,但仍仅只有五个法方程式。本文中的数值实例结果表明,这种理论和方法是可行的。

On Relative Orientation by Method of Least Perpendicular Distances between Pairs of Rays

The error of measurements of photographic coordinates in analytical stereo triangulation is unavoidable. Since the so-called identical points are really not the same points, the corresponding pairs of stereo lines cannot be adjusted to intersect simultaneo- usly. Removing and rotating one of the bundles of lines, it is possible to make the sum of the squares of the perpendicular distances between corresponding pairs of rays to minimum, and then the probable interseeting positions of relative orientation may be obtained. The number of pass points used in a stereopair is not confined to six, it may be fourteen, or even more, but the normal equations are only five. The results of numerical examples show that the principle and the method suggested are available.