卷烟盒装外观检测设备成像环境物理稳定性原位测量方法  

In-situ monitoring physical stability of imaging environment for cigarette packet appearance inspection device

作　　者：刘冠铭 张鹏飞[1] 宁英豪 应伟[2] 史占东 黄华[2] 张勍[1] 苗芊[1] LIU Guanming;ZHANG Pengfei;NING Yinghao;YING Wei;SHI Zhandong;HUANG Hua;ZHANG Qing;MIAO Qian(Zhengzhou Tobacco Research Institute of CNTC,Zhengzhou 450001,China;China Tobacco Zhejiang Industrial Co.,Ltd.,Hangzhou 310024,China)

机构地区：[1]中国烟草总公司郑州烟草研究院,郑州450001 [2]浙江中烟工业有限责任公司,杭州市310024

出　　处：《烟草科技》2025年第3期87-96,102,共11页Tobacco Science & Technology

基　　金：国家烟草专卖局标准预研项目“卷烟盒条包装外观质量在线视觉检测设备性能指标检测及溯源方法研究”(国烟科[2023]35号);浙江中烟工业有限责任公司科技项目“卷烟盒装外观质量在线视觉检测设备性能智慧探测及溯源关键技术研究”(ZJZY2023D018)。

摘　　要：为在不影响生产的前提下实现对卷烟盒装外观检测设备(以下简称设备)成像环境物理稳定性的监测,利用大部分设备自带3个相机的特性,提出一种基于计算机视觉的原位测量方法。①基于LK光流法对正位相机实时采集的连续图像进行分析,获取设备振动幅度数据;②利用两个侧位相机组成双目视觉系统,结合相机标定、霍夫变换等算法,获取烟盒位姿变化数据;③根据平均振幅μ_(y)、平均旋转角μ_(g)和平均偏移距离μd建立设备稳定性异常判别准则,当振动幅值yi>1.5μ_(y)时判定振动异常,当旋转角度gi>1.5μ_(g)或平移距离di>1.5μd时判定烟盒位姿异常。对该方法进行准确性验证并测试其在16台设备中的应用效果,结果表明:该方法能够实时、准确地检测出设备的异常振动和烟盒的异常位姿,对振动的测量结果与加速度计测量结果的相关性系数>85%,对位姿变化(包括旋转和平移)的综合测量误差<2%;不同设备对于烟盒位姿的控制能力差异较大且设备振动幅度随使用年限的增加呈增大趋势。该方法可为提高烟盒外观检测水平提供技术支持。In order to online monitor the physical stability of the imaging environment for cigarette packet appearance inspection devices,an in-situ measurement method based on computer vision was proposed,taking the advantage of the fact that most of these devices are equipped with three cameras.1)The LK luminous flux method was used to analyze the continuous images collected in real time by the front camera to obtain the vibration amplitude data of the device.2)The two side cameras were used to form a binocular vision system,the posture change data of the cigarette packets were obtained by combining with camera calibration and algorithms such as Hough transform.3)The average vibration amplitudeμ_(y),the average rotation angleμ_(g),and the average offset distanceμd were created as criteria for discriminating the status of the device when the vibration amplitude yi>1.5μ_(y),the vibration of the device is defined as an abnormal vibration;if the rotation angle gi>1.5μ_(g)or the offset distance di>1.5μd,the posture of the cigarette packet is defined as an abnormal posture.The method was verified and its performance was tested on 16 devices.The results showed that this method could accurately detect the abnormal vibration of the device and the abnormal posture of the cigarette packet in real time.The correlation coefficient between the results measured by this method and an accelerometer was higher than 85%,and the compound measurement error for the posture changes(including rotation and translation)was less than 2%.The ability of different devices to control the posture of the cigarette packet varied widely,and the vibration amplitude of the devices increased as the increase of their length of service.This method provides technical support for improving the appearance inspection of cigarette packets.

关 键 词：卷烟盒装 外观检测设备 光流法 双目视觉 振动检测 位姿检测 原位测量 

分 类 号：TS434[农业科学—烟草工业]