光电经纬仪图像测量中的自动调焦系统研究  

Research on Automatic Focusing System for Theodolite's Image Measurement

作　　者：蒋汉元 李雪雷[2] 张涛[2] 廉绿松 

机构地区：[1]91245部队 [2]中国科学院长春光学精密机械与物理研究所

出　　处：《计算机测量与控制》2010年第1期183-185,共3页Computer Measurement &Control

摘　　要：针对经纬仪传统自动调焦中因目标距离数据不足而无法使用的缺点,从获取的数字图像中提取表征图像清晰度特征的聚焦量入手,设计实现了经纬仪自动调焦系统;首先对自动调焦系统进行了总体结构设计,其次设计开发了图像采集存储处理控制单元的软硬件,设计了自动调焦的控制过程,实现了基于图像处理的经纬仪自动调焦;实验结果表明,在外场工作条件下,应用该系统对静止目标和多数运动目标均能获得良好的调焦效果。The traditional theodolite＇s automatic focusing system always is invalid because there are not the target＇ s distance data. This paper designed a new automatic focusing system which worked with getting the focusing number from the obtained digital image. Firstly the integrated constitution is introduced. Then the operating principle, hardware and software of the units of image gathering, processing, saving and control are presented. The control process of automatic focus is analyzed in detail. Experimental results show that the system can realize good focus to immobile targets and most mobile targets in the working environment.

关 键 词：图像处理 自动调焦 聚焦量 调焦控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]