激光束在视觉检测中的标定方法研究  

Study on Calibration Method of Laser in Visual Measurement

作　　者：韩峰[1] 王彦平[1] 赵太新[1] 张明鸣[1] 

机构地区：[1]内蒙古工业大学机械学院,呼和浩特010051

出　　处：《中国仪器仪表》2007年第1期36-38,共3页China Instrumentation

摘　　要：计算机视觉检测技术在测绘、工业、军事、导航等领域已得到广泛的应用。而标定是视觉检测的关键技术之一。本文介绍一种用激光束对系统进行标定的新方法,即将激光器发出的平行光束投射到被测物表面上的光斑作为标定物,通过采集光斑图像并对图像进行预处理,包括噪声处理、图像分割技术等得到光斑图像,最后计算出图像象素与实际尺寸的对应关系。该方法能够在不便于或者不能使用常规标准件法的环境下进行快速标定。试验结果验证了该方法在一定精度下的稳定性和可用性。Computer visual measurement has been used extensively in mapping, industry, military affairs, and navigation and so on. Calibration is one of key technique of visual measurement. This paper introduces a new method of system calibration with laser, which is that laser facula projected on surface of object measured from laser parallel beam is used as calibration object. Collect facula image and acquire it by image preprocessing, including noise processing, image segmentation and so on. Finally, corresponding modulus can be calculated in image pixel and actual dimension. This method can adapt to fast calibrating for unable or inconveniences to using standard letter law environment. The test result confirmed that this method is of stability and usability under certain precision.

关 键 词：视觉检测 标定 图像处理 

分 类 号：TP274.4[自动化与计算机技术—检测技术与自动化装置]