AOI技术中Mark点定位算法的研究  

Research on Mark Localization Algorithm in AOI System

作　　者：程德强[1] 李硕[1] 薛阳[1] 黄成华[2] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏徐州221008 [2]安徽省皖北煤电集团有限责任公司,安徽宿州234000

出　　处：《电视技术》2013年第15期48-51,共4页Video Engineering

基　　金：国家自然科学基金委员会与神华集团有限责任公司联合资助项目(U1261105);徐州市科技项目(XF11C110)

摘　　要：提出了一种新的检测圆心的方法,可有效识别圆形Mark并准确计算其在PCB板中的位置。该方法中,首先将摄像机采集到的图像灰度化,利用Otsu算法计算阈值并将图像二值化,提取轮廓后用改进的Hough变换计算圆心的位置。实验结果表明,该算法具有定位精确快速,抗噪性能良好等优点。A new method of detecting the center is proposed for recognizing the Mark point and calculating its location in the PCB board accurately. First it grays the image collected by camera. Then it calculates its threshold value with Otsu algorithm and binaries it. At last,it calculates the center of circle with improved Hough transformation after extracting contours. Experimental results show that this algorithm has advantages of quick accurate loca- tion and good noise immunity.

关 键 词：AOI Mark点定位 阈值 霍夫变换 

分 类 号：TN957.53[电子电信—信号与信息处理]