基于多目视觉的高速印刷质量在线检测系统

A Vision System for On-line Quality Inspection of High Speed Printing Based on Multiple Cameras

印品质量的在线控制对印刷工艺管理、剔废和提高印品质量至关重要。研究了一种基于多面阵相机的对高速印品进行在线缺陷检测的机器视觉系统。通过独特的光学系统,可以消除闪光元素的眩光,检测到印品上的微小印刷缺陷;研究了快速缺陷查找算法;研究了纸张纠偏算法,避免了纸张蛇形造成的误检;通过C/S网络化并行结构,可以对图像数据进行分布式处理和集中统计管理。

A vision system for on - line quality inspection of high speed printing process is proposed. The system consists of distributed data processing with multiple area scan cameras, effective anti - blooming illumination design and fast image processing algorithm with blob searching. Pattern matching adapted to paper snake - moving are emphasized. Experimental results verify the speed, reliability and accuracy of the proposed system.