广东工业大学学报 ›› 2013, Vol. 30 ›› Issue (2): 74-78.doi: 10.3969/j.issn.1007-7162.2013.02.014

• 综合研究 • 上一篇    下一篇

结合二维信息的PMP三维测量相位展开方法

易群生1,章云1,罗兵2   

  1. 1. 广东工业大学 自动化学院,广东 广州 510006;2. 东莞市神州视觉科技有限公司,广东 东莞 523128
  • 收稿日期:2012-03-16 出版日期:2013-06-27 发布日期:2013-06-27
  • 作者简介:易群生(1985-),男,硕士研究生,主要研究方向为制造业自动化装备.
  • 基金资助:

    广东省教育部产学研结合资助项目(2010B09040055)

Improved Phase Unwrapping Method Using 2D Information in PMP 3D Measurement

Yi Qun-sheng1, Zhang Yun2, Luo Bing2   

  1. 1. School of Automation, Guangdong University of Technology, Guangzhou 510006, China;2. Aleader Vision Technology Co., Ltd, Dongguan 523128, China
  • Received:2012-03-16 Online:2013-06-27 Published:2013-06-27

摘要: 在基于光栅投影相位测量轮廓术的电子贴片安装印刷锡膏质量三维检测中,阴影、噪声和在线检测的快速性要求都使传统相位展开方法不能满足需要.结合该应用的实际工程条件,根据二维图像信息,可以改进相位展开方法:在测量对象平滑的区域,用基本原理法进行相位展开;在阴影、边界区域和三维异常的情形,分别采用质量图导向法和最小二乘法进行相位展开.实验证明该方法既保证了PMP包裹相位的正确展开,又提高了处理速度.

关键词: 相位展开;相位测量轮廓术;三维测量;贴片安装技术;机器视觉

Abstract: In SMT solder paste deposit 3D measurement based on Phase Measurement Profilometry(PMP), shadow, noise and holes made the conventional phase unwrapping method unable to meet requirement. Considering practical engineering conditions, the phase unwrapping method was improved with 2D image information: the basic principle method was applied to smooth areas while the quality-guided unwrapping and least-square methods were employed in shadow areas, border areas and special solder for phase unwrapping respectively. Experimental results show that the proposed method can ensure the correct and quick unwrapping of desired phases.

Key words: phase unwrapping; phase measurement profilometry; 3D measurement; surface mounted technology; machine vision

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