利用数码相机进行LED灯具光衰自动检测  

Automatic Detection of Decay of LED Lamps based on Digital Camera

作　　者：赵浩之[1] 蒋春旭[1] 申中鸿[1] 王深[1] 林树坚[1] 

机构地区：[1]工业和信息化部电子第五研究所,广东广州510610

出　　处：《电子产品可靠性与环境试验》2013年第A01期251-255,共5页Electronic Product Reliability and Environmental Testing

基　　金：广东省战略性新兴产业发展专项资金资助项目(2012556044);国家科技支撑计划课题资助项目(2011BAE01B14);国家自然科学基金<半导体照明系统可靠性强化机理与试验方法设计>资助项目(U1201254)

摘　　要：将数码相机测量亮度与机器视觉技术进行有效的结合,并将其首次运用到LED灯具光衰自动检测中。首先,使用机器视觉技术对LED灯具的图像进行处理,包括阈值分割等预处理方式以及根据计算几何学相关知识,对不同外形的LED灯具进行特征识别和分类;然后,通过对数码相机工作原理和感光特性的研究,在完成对相机的准确标定后,即可实现对LED灯具光亮度的测量。该方法具有很高的创新性,可应用于加速寿命试验箱中LED灯具的光衰自动检测。The method using digital camera to measure the brightness in combining with the machine vision technology was applied to the automatic detection of LED decay for the first time. First of all, the images of LED lamps are processed using machine vision technology, including threshold segmentation. And LED lamps with different shapes can be classified by com- putational geometry knowledge and feature recognition. Then, after the accurate calibration of the camera, the measurement of LED lamp brightness can be realized. This method is highly innova-tive, and can be applied to automatic detection of LED decay in the accelerated lite test box.

关 键 词：数码相机 机器视觉 发光二极管 亮度 光衰自动检测 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]