基于动态梯度的激光光斑中心定位算法  

Location Algorithm of the Laser Spot Center Based on Dynamic Gradient

作　　者：蓝章礼[1] 闫果[1] 杨小帆[2] 周建廷[3] 

机构地区：[1]重庆交通大学计算机与信息学院,重庆400074 [2]重庆大学计算机学院,重庆400044 [3]重庆交通大学土木工程学院,重庆400074

出　　处：《计算机科学》2008年第8期223-226,共4页Computer Science

基　　金：国家自然科学基金(50608072);863科技计划项目(2006AA04Z433);重庆市教委项目(KJ070420);重庆市科技攻关项目资助

摘　　要：为提高激光光斑中心检测的长期稳定性、抗干扰性能和定位精度,在对相关圆心定位算法进行研究的基础上,通过理论分析与实验测试,提出一种基于动态梯度的激光光斑中心定位算法。该算法根据激光光斑特点,利用图像梯度对光斑进行标识与定位。实验结果表明,该算法定位精度高,有效提高了激光光斑中心检测的抗干扰性能和长期稳定性,适合对测量精度要求高的长期在线测量。这种新方法已被成功用于自动激光挠度测量系统中。To improve the long-term stability, anti-interference performance and location precision of the laser spot center detection, a dynamic gradient based location algorithm of laser spot center is given after theoretical analysis and experiment based on researching of some location algorithms of the centre of a circle. According to the character of the laser spot, the algorithm identifies and locates the spot by using gradient. Experiment results demonstrate the high precision of the algorithm, and the long-term stability and anti-interference performance of the detection of the laser spot center are improved efficiently. It is suitable for long-term online measurement. The new algorithm has been used in a laser deflection measurement system successfully.

关 键 词：定位算法 激光光斑 中心 动态梯度 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置] P228[自动化与计算机技术—控制科学与工程]