基于光反射的超大屏幕触控技术研究  

Touch Technology for Large Screen Based on Light Reflection

作　　者：田丰[1] 夏雪[1] 田晶[1] 张文俊[1] 

机构地区：[1]上海大学影视艺术技术学院影视工程系,上海200072

出　　处：《光电工程》2013年第9期76-81,共6页Opto-Electronic Engineering

基　　金：上海市教育委员会科研创新项目(12YZ008);上海大学创新基金(sdcx2012045)

摘　　要：通过介绍基于光反射的大屏幕定位方法,解释了视觉触控的实现原理,搭建了大屏幕触控系统。针对大尺寸超大屏幕的应用和平板显示屏幕的大型化趋势,研究了超大屏幕触控的小信号检测方法,包括位置选行方法、背景跟随方法和屏幕抗重压方法。实验证明,在不需要佩戴任何标记和传感器的条件下,基于光反射的超大屏幕触控系统能够在100英寸(1英寸=2.54 cm)的大屏幕上全屏绘图且不产生断笔与跳笔等现象,触控系统的设计也为大尺度真三维人机交互奠定了实物基础。By introducing big screen positioning methods based on light reflection, the principle of visual touch is explained and the big touch-screen system is built. For large-scale trend of FPD （Flat Panel Display）, touch detection method based on small-signal is studied. Row selected, background followed and screen heavy pressure removal method are proposed. It is demonstrated in the experiments that large screen touch system based on light reflection achieves full-screen drawing on a lO0-inch screen without wearing any marks or sensors and there are not drawing breaking and skipping phenomena. The design of touch system also lays the foundation for large-size volumetric human-computer interaction.

关 键 词：触控检测 重压鬼点 断笔 跳笔 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置] TP301.1[自动化与计算机技术—控制科学与工程]