摘要
提出了一种新颖的用于滑坡监测的多目标微位移图像监测系统。利用目标的微小形变反映在 CCD 获取的图像对应特征点位移的性质,运用光学重心等算法来确定目标是否超出安全警戒范围。结合步进电机和经纬仪对目标方位的精确定位能力并通过电台的控制,实现多点目标的遥控测量。系统的监测距离为 500m,实验达到的测量位移分辨率为 12mm,光斑重心坐标检测的重复精度优于 0.7μm。
A novel multi-objective micro-displacement system for monitoring landside is proposed. The system exploits the displacement of the correspondent feature points with the variation of target micro-deformation acquired by CCD and determines whether targets go beyond the safety scope by using image arithmetic manipulation such as the algorithm of gravity center. By combing the precision stepping of motor and accurate target orientation determination by theodolite,the system can measure the displacement of multiple targets in remote mode by the transmitter-receiver. The preliminary system can detect target 500m away with displacement resolution of 12mm. Also its repetition accuracy with spot gravity algorithm is better than 0.7μm.
出处
《光电工程》
CAS
CSCD
北大核心
2004年第B12期33-35,39,共4页
Opto-Electronic Engineering
基金
国土资源部科技发展基金资助项目(20021020303)
关键词
位移监测系统
图像采集
图像处理
电荷耦合器件
目标探测
Displacement monitoring systems
Image acquisition
Image processing
Charge-coupled devices
Target detection
