基于机器视觉的柔性杆件振动频率测量算法研究  

Research on vibration frequency measurement algorithm of flexible rod based on machine vision

作　　者：吕腾达 刘成[1] 

机构地区：[1]中国科学院国家空间科学中心,北京100190 [2]中国科学院大学,北京100190

出　　处：《电子设计工程》2017年第4期119-121,125,共4页Electronic Design Engineering

摘　　要：基于机器视觉的方法实现了对空间柔性杆振动频率测量的算法,通过在视频图像中杆件边缘附近设置合适的LOI(line of interest),并检测并计算得到LOI(line of interest)内的柔性杆边缘点坐标位置移动,通过计算边缘点坐标波动频谱密度,实现了对柔性杆的振动频率的测量。该算法不但复杂度较低,且解决了必须在柔性杆件上安装点光源和标志点等问题。实验表明该算法具有较好的实时性。Based on machine vision method realized the space flexible rod vibration frequencymeasurement algorithm. In the video image near the edge of the flexible rod set proper LOI （line ofinterest）, check and detect the moving of the flexible bar edge point in the LOI （line of interest）. Theflexible rod vibration frequencymeasurement is realized by calculating the spectrum of density of theedge point coordinate＇sfluctuation. The algorithm not only has low complexity, and solves the problemthat point source and sign must be installed on the flexible rod. Experiments show that the algorithm hasa better real-time performance.

关 键 词：机器视觉 柔性杆件 振动频率测量 边缘点平移 

分 类 号：TN98[电子电信—信息与通信工程]