A New Method for Detecting Color Printing Image Registration Error
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摘要: 提出了一种印刷品检测方法,用印刷图像信息取代套印控制条来检测套准。首先,把CCD采集到的印刷品图像从RGB色彩空间转换到CMYK色彩空间,并分解成C、M、Y、K(青、品、黄、黑)4个通道。之后求出C、M、Y、K通道图像的边缘,计算C、M、Y边缘图像和基准K边缘图像的距离边缘共生矩阵(distance edge cooccurrence matrix,DECM),即可求出四色套印偏差。通过仿真和实验证明本算法检测印刷品套准具有较高的精度,符合国家印刷行业标准规定的套准精度要求。为印刷机的工作状态的调整提供可靠的数据。Abstract: In this paper,we present a new printing image registration error detection method based on the DECM(Distant Edge Co-occurrence Matrix). We use printing image information to register errors. Firstly,we collect aprinting image with the CCD camera and convert it from RGB color space to CMYK color space. Secondly,we sep-arate the image into C, M, Y, K color channels and obtain the edge image of each channel. We calculate the trans-lation distance between detecting the edge images (C,M,Y) and the reference edge image (K). The method pro-posed in this paper can easily compute the four-color overprint deviation. The simulation results and experimentalresults have good agreement,indicating that the method is correct and effective.
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Key words:
- printing image /
- registration error /
- edge extraction
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[1] 龙永红，昊敏. 一种基于图像的套印参数测量方法[J]. 湖南大学学报，2006，33(2):59～62 [2] 王跃宗，刘京会，李德胜. 套准偏差自动检测方法[J]. 机械工程学报，2009，45(12):242～246 [3] 王梅，赵荣丽，李克天. 印刷自动套准标记识别方法研究[J]．包装工程，2007，28(8):60～62 [4] Marode S A，Nandedkar A V，Bonde S V. Computer visionbased offset error computation for web printing machines usingFPGA[A]. 2010 Annual IEEE India Conference ( INDI-CON)[C]，2010，Kolkata:1～6 [5] Chandu K，Saber E，Wu W C. A mutual information based auto-matic registration and analysis algorithm for defect identificationin printed documents[A]. 14th IEEE International Confer-ence on Image Processing[C]，2007，San Antonio，TX，United states:449～452 [6] Rakun J，Zazula D. Optimisation of image registration for printquality control [A]. 6th EURASIP Conference focused onSpeech and Image Processing，Multimedia Communicationsand Services[C]，2007:454～458 [7] 高军，李学伟，张建等. 基于模板匹配的图像配准算法[J]. 西安交通大学学报，2007，41(3):307～311 [8] 张海燕，赵博. 基于图像处理的单张纸胶印机对角线套准及自动控制系统[J]. 包装工程，2005，26(2):50～51 -
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