离线彩色套印误差检测系统

为了实现彩色印刷套印误差的检测,提出了基于计算机视觉的检测方法,并设计了检测算法.应用CCD采集印版测量标识的图像,在HSI色彩空间中,通过色调统计特征进行套准识别,并通过色调和亮度对彩色图像进行阈值分割,对分割后的图像采用色调投影积分方法快速获取测量标识的坐标参数,实现彩色套印误差的检测.实验表明,该系统能快速准确地检测出套印误差参数,并已经用于北人集团印刷机套印精度的检测.

A Off-line System on Detection of Overprint Deviation in Color Printing

In order to detect the overprint deviation in color printing,the article brought forward a method based on computer vision and established its algorithm.The image of the measuring mark of plate captured by CCD,recognized and analyzed the registered mark by the statistic character of hue in HSI space,and segmented the color image by the 2 paramaters of hue and intensity,measuring data about the registering quality can be obtained by hue projecting integral method after color image segmentation.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.