基于图像检测技术的触摸屏关键技术研究-光学工程专业论文.docx

万方数据 万方数据 日期： 年 月 日 摘 要 21 世纪人与机器的交流方式发生深刻的变革，由此带来了触摸屏技术的飞速 发展期。触摸屏技术因其能够使用户摆脱鼠标和键盘等传统输入设备的特点而被 广大用户喜爱。不同方式的触摸定位技术决定了触摸屏的种类不同，但现有主流 触摸屏都存在一个共同的缺陷：限制了用户操作触摸屏的人机交互距离。因此， 人机非接触式交互技术已经成为一个竞相研究的热点。 与传统触摸检测定位技术不同，本课题提出利用图像检测处理的技术解决触 摸屏触摸操作点定位的问题。利用激光光斑驱动光标运动，利用无线收发模组控 制系统模拟鼠标的各种动作，最终实现非接触式触摸操作的功能。 本文概括了系统的工作原理，描述了非接触式触摸屏系统的软件开发环境和 图像处理的平台，并完成对开发平台相应的配置工作，阐述了驱动光标运动及绘 图操作的方法。接着重点介绍了激光控制笔的设计方案，以及软件模块的开发流 程，详细介绍了图像检测定位技术的理论和方法，重点研究分析了激光光斑的定 位算法，并进行实验仿真工作，从光斑定位精度和算法时间复杂度以及遮挡光斑 定位效果等三个角度综合衡量最终选择出适用于本系统的光斑定位算法。 本文最后对系统性能进行了相关测试，总结了本文系统的缺点，指明了未来 进一步研究的方向。 关键词：触摸屏，图像处理，激光光斑，OpenCV，非接触式触摸 ABSTRACT In the 21st century, man-machine communication has witnessed the tremendous changes, brings the touch-screen technology a rapid development times. Touch screen technology is loved by the majority of users because it enables the users to get rid of the traditional input-devices, such as mouses and keyboards. Different ways of locating determine the different types of touch screens. However, existing mainstream touch screen systems exist a common flaw: they limit the distance of man-machine interaction. So the man-machine non-contact interaction technology has become a competing research focus all of the world. Be different with the traditional detection and location technology, this article proposed using the image detection and procession technology to solve the problem of locating operation-points, using laser spots to drive the cursor’s movements, and using a wireless transceiver module to simulate a variety of mouse action. This article realized the non-contact touch function ultimately. In this article, the working principle of this system, the software development environment and the imaging-processing platform were described firstly. Afterwards, the methods of driving cursor movements and drawing operations were summarized. In chapter 3, the design of the laser pen and the development process of software were introduced. And then, the theories of image detection technology and the l