摘要
本文对控制点标志的选择进行分析,指出选择的基本原则;提出了基于像点与物方之间几何关系来识别点的方法。阐述了对目标影像的分割、定位及光束法平差解算物方点的空间坐标,并根据验后方差确定观测值的权;给出了一个二维控制场建立的实例,物方控制点的坐标中误差小于±0.2mm。
The paper introduce the several main artificial marks of control points,and point out the main principles of selection.The way using the geometrical relation of images to identify the control points automatically and semi-automatically has been introduced.The key techniques including image division,points position and calculation of coordinates ground points using bundle adjustment have been clearly expatiated.The power of value participating in adjustment is determined according to the mean square error after adjustment.In this paper a instance has been provided,the mean square error of coordinates of check points is less than 0.2mm.
出处
《测绘科学》
CSCD
北大核心
2006年第2期44-46,共3页
Science of Surveying and Mapping
关键词
控制场
摄影测量
相机检校
直线提取
标志识别
子象素
control network
photogrammetry
image processing
camera calibration
object detection
symbol identification
sub-pixel
作者简介
侯文广（1974-），博士生，主要研究方向为工业测量和近景摄影测量。E-mail：Houwenguang99@163．com
