基于视觉的触控系统标定方法  

Calibration Method for Vision-Based Touch System

作　　者：田丰[1] 汪浩[1] 夏雪[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：《液晶与显示》2013年第4期561-566,共6页Chinese Journal of Liquid Crystals and Displays

基　　金：上海市教育委员会科研创新项目(No.12YZ008);上海大学创新基金(No.sdcx2012045)

摘　　要：通过介绍基于视觉的大屏幕定位方法,解释了视觉触控的实现原理,搭建了大屏幕触控系统。为了满足视觉触控定位精度的要求,提出了对角线全屏分段标定方法,并对标定点进行拟合计算,完成了视觉多点触控系统的定位。实验证明,在准确触控标定点的条件下,基于视觉的大屏幕触控系统能够在距离屏幕上檐2cm以外实现3个像素内的准确定位,在距离屏幕上檐2cm以内实现10个像素内的定位。By introducing the big screen positioning method based on visual touch, the visual touch principle is expounded and large screen touch system is built. In order to meet the re- quirements of accurate positioning, the full screen diagonal segmented calibration method is proposed and calibration points are fitted, the positioning for optical multi-touch system is achieved. The experiments demonstrated that in conditions of touching calibration points accurately, the vision-based big screen touch system is able to achieve accurate positioning within 3 pixels when the area is 2 cm away from the up edge of the screen. Positioning can be reached within 10 pixels when the area is within 2 cm from the up edge of the screen.

关 键 词：视觉触控 标定 拟合 定位精度 

分 类 号：TN911.74[电子电信—通信与信息系统]