摘要
常规的绝对定向方法往往需布设足够多的物方控制点才能得到精确的7个绝对定向元素。当测量过程无需确定被摄物体在空间的绝对位置时,常规的绝对定向方法就会增加测量的工作量,降低工作效率。基于有向线段的绝对定向方法,无需布设控制点,只需通过铅垂线段和已知方位角的非铅垂线段即可确定像对所构建模型的空间相对方位。详细阐述了基于有向线段的绝对定向方法的原理,并对该方法在测绘工程中的应用进行了初步探讨。
In order to obtain accurate seven absolute orientation elements, the traditional absolute orientation method often has to lay a sufficient number of object control points. In some measurement process which needn’t to determine the absolute position of the subject in space, the traditional absolute orientation method will increase the measurement workload and reduce efficiency. The absolute orientation method based on directional line segment, which needn’t to lay the control point, can use the vertical line and the non-vertical line that known azimuth angle to determine the spatial relative orientation of the model constructed by image pair. In this paper, we elaborated the principle of the absolute orientation method based on directional line segment, and discussed the applications of this method in surveying and mapping engineering.
出处
《地理空间信息》
2019年第7期100-102,I0003,共4页
Geospatial Information
关键词
有向线段
绝对定向
工程应用
directional line segment
absolute orientation
engineering application
