基于数字图像处理技术的激光光斑位置检测研究  

Research on laser spot position detection based on digital image processing technology

作　　者：夏青 王桂霞 XIA Qing;WANG Guixia(School of Electro-mechanical Engineering,Zhongyuan Institute of Science and Technology,Zhengzhou 450000,China)

机构地区：[1]中原科技学院机电工程学院,郑州450000

出　　处：《激光杂志》2024年第9期208-212,共5页Laser Journal

基　　金：河南省本科高校青年骨干教师培养计划(No.2023GGJS200)。

摘　　要：激光技术在应用过程中,光斑位置检测与确定是其中的关键环节,直接决定着激光技术的应用性能。但是,现有光斑位置检测方法由于应用手段的缺陷,存在着检测时间过长、检测精度较低等问题,故提出基于数字图像处理技术的激光光斑位置检测研究。使用图像采集设备(相机或者摄像机)获取激光光斑图像,基于数字图像处理技术处理激光光斑图像,以此为基础,采用二维Otsu算法分割激光光斑图像,应用Canny算子提取光斑边缘,通过最小二乘圆拟合方法拟合处理光斑边缘,即可计算出激光光斑中心位置,从而实现了激光光斑位置的精准检测。实验结果显示:应用提出方法获得的光斑位置检测时间最小值为0.1 s,光斑位置检测误差最小值为0.2%,充分证实了提出方法应用性能较佳。In the application process of laser technology,the detection and determination of spot position is a key link,which directly determines the application performance of laser technology.However,due to the limitations of application methods,existing spot position detection methods have problems such as long detection time and low detection accuracy.Therefore,a research on laser spot position detection based on digital image processing technology is proposed.Using image acquisition devices(cameras or cameras)to obtain laser spot images,processing the laser spot images based on digital image processing technology.Based on this,the two-dimensional Otsu algorithm is used to segment the laser spot images.The Canny operator is applied to extract the edge of the spot,and the minimum twice circle fitting method is used to fit and process the edge of the spot.The center position of the laser spot can be calculated,thus achieving accurate detection of the laser spot position.The experimental results show that the minimum detection time for spot position obtained by the proposed method is 0.1 s,and the minimum detection error for spot position is 0.2%,fully confirming that the proposed method has better application performance.

关 键 词：激光光斑 数字图像处理技术 位置检测 检测精准度测试 中心位置计算 

分 类 号：TN929.1[电子电信—通信与信息系统]