文献类型：会议论文

英文题名：An automation visual inspection system for color overprint deviation

作者：Yu, Li-Jie[1]; Zhao, Li-Xian[1]; Zhou, Guan-Ling[1]

第一作者：于丽杰

通讯作者：Yu, L.-J.

机构：[1] College of Automation, Beijing Union University, Beijing 100101, China

第一机构：北京联合大学城市轨道交通与物流学院

会议论文集：Proceedings 2011 International Conference on Transportation, Mechanical, and Electrical Engineering, TMEE 2011

会议日期：December 16, 2011 - December 18, 2011

会议地点：Changchun, China

语种：英文

外文关键词：Color - Color printing - Computer hardware - Least squares approximations - Printing presses - Video cameras

摘要：Now, registration precision is usually adjusted by handwork that is an undeveloped method for multi-color printing machines in china. To solving this problem, a machine vision system was designed and developed for automatically detecting the overprint deviation. The system consisted of a video camera and a PC computer with image processing hardware and software. The image of the measuring marker of plate captured by CCD, recognized and analyzed the registration marker by the statistic character of hue in HSI space, and segmented the color image by means of threshold, that edge pixels of color marker are extracted, and their structural lines are approximated by least squares approximations, final, the deviation from each other is obtained. Experimental results show that the system can fast enough measure the exact overprint deviation in color printing and have used to examine the overprint precision in Beiren Printing Machinery Co., Ltd. ? 2011 IEEE.