基于相机阵列的叠层纸张数量检测  

Apparatus and method for stacked sheet counting with camera array

作　　者：陈飞[1] 朱海斌[2] 贾康成 肖昌炎[2] 

机构地区：[1]第二炮兵工程大学理学院机械室,西安710025 [2]湖南大学电气与信息工程学院,长沙410082

出　　处：《计算机工程与应用》2015年第13期168-171,共4页Computer Engineering and Applications

基　　金：湖南省自然科学常德联合基金(No.12JJ9019);国家自然科学基金(No.61172160)

摘　　要：在印刷和包装领域中,类似纸板数量检测的质检是一个重要的环节,其中机器视觉方法凭借无物理接触和实时性等优点得到了广泛的应用。由于传统的单相机成像方法无法获取一个超高叠层的清晰图像,设计了一套使用相机阵列组成的成像装置和高性能的计数方法。详细叙述了成像系统的具体结构,着重介绍了基于Canny边缘检测和Hough直线检测实现计数的图像处理方法,更重要的是设计了一种融合相机阵列计数结果的方法,以得到一个精确的烟标数目。通过在生产车间近一年的测试表明,该设备误差小于6?,完全能够满足精度、实时性的要求。There is an emerging requirement for quality control like sheet-counting in printing and packaging industry,where machine vision methods are widely adopted due to their nondestructive and real-time merits.However,the conventional single-camera scanning systems often suffer from insufficient resolution while handling the sheet-counting issue of ultrahigh stacks.To solve the problem,this paper presents a new apparatus using camera array and advanced image processing algorithms.The system architecture of the apparatus is briefly described,and much emphasis is exerted on the line detection of images based on an improved Canny edge algorithm.Particularly,the fusion of results from multi-camera imaging is described in details.Through more than one year＇s test in factory production lines,it is demonstrated that the apparatus can satisfy the high-accuracy requirement of real-time sheet-counting task with an error less than 6？.

关 键 词：机器视觉 烟标数量检测 Canny边缘检测算子 HOUGH变换 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置]