基于LabVIEW机器视觉的全息透镜板自动拼接系统  

Auto-stitching system of holographic lens sheet based on LabVIEW machine vision

作　　者：苏萍[1] 张长杰[2] 程雪岷[1] 马建设[1] 毛杰 

机构地区：[1]清华大学深圳研究生院,广东深圳518005 [2]清华大学精密仪器系,北京100086 [3]上海环鼎影视科技有限公司,上海200120

出　　处：《传感器与微系统》2016年第1期110-113,116,共5页Transducer and Microsystem Technologies

基　　金：2012年广东省产学研省部合作专项资金与省院全面战略合作专项资金资助项目(050100001);青年科学基金资助项目(20149110092);深圳市基础研究项目(JCYJ20140417115840236)

摘　　要：理论计算表明,全息透镜板之间的拼缝偏差或两个透镜边缘线偏差小于0.1 mm时,可以满足基于全息透镜技术的裸眼3D LED显示系统对全息透镜板拼接的要求。研究由小尺寸全息透镜板拼接为大尺寸全息透镜板的过程,结合基于投射条纹的拼接方法,提出了基于机器视觉的自动化拼接方案。分析了两块透镜板相对位置变化过程中亮条纹间距的变化规律,并基于Lab VIEW编写了系统操作程序。根据理论分析和系统设计,搭建了闭环控制实验平台。实验结果表明:使用该自动拼接系统可以高效地将两块透镜板移动到准确的位置,且透镜板之间的偏差小于0.1 mm,满足理论计算要求。此系统方法可以应用到小规模的透镜板拼接系统中。Theoretical calculation shows that while the seam width deviation of two holographic lens sheets or edge line deviation between two holographic lens is less than 0.1 mm, which can meet demand of naked eye 3D LED display system based on holographic lens technology for stitching of holographic lens sheet. The process of large- size holographic lens sheet stitched by several small-size lens sheets is studied, combined with method of stitching based on projecting stripes, automation stitching scheme based on machine vision is proposed. Analyze variation rule of bright stripes spacings in process of relative position change of two holographic lens sheets, system operation program based on LabVIEW is compiled. According to theoretical analysis and system design, closed-loop control experimental platform is set up. Experimental results show that using this system can move two holographic lens sheets the precise position high-efficiently and the relative position deviations of the holographic lens sheets is less than O. 1 mm, which meets demand of theoretical computation. This system method can be applied in the small scale lens sheet auto-stitching system.

关 键 词：全息透镜板 机器视觉 自动拼接 闭环系统 LABVIEW 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]