发光二极管形状检测识别系统

THE SHAPE DETECTION AND RECOGNITION SYSTEM OF LIGHT EMITTING DIODE

发光二极管(LED)缺陷检测工作是确保LED产品质量的必不可少的质量检验环节,具有重要的意义。本文运用图象处理和模式识别技术,完成发光二极管的检测识别工作。文章介绍了建立在SGI图象图形工作站上的发光二极管形状识别系统的系统配置、识别原理、检测步骤、技术难点和解决方案。系统能检测LED的外形尺寸、脚位偏移、漏固、汽泡、崩损和花痕等常见缺陷,具有检测精度高、识别速度快等特点,为实现计算机形状识别提供了可行途径。

The deformity detection of light emitting diode is an important work for quality assurance of LED. This paper describes the system which implements detection and recognition of LED using imago processing and pattern recognition. The paper introduces system configuration, recognition principle, detection procedure, key technology and solutions of LED shape recognition system established on the SGI workstation. This system can detaet the usual deformities, for example, shape size, offset of position, absent assembly, pubble, crack and mark etc. The detection accuracy of this system is high and the detection speed is fast. This system presents a new way of shape recognition in computer.