基于查找表的四路摄像头协同多触点定位方法  

Four Collaborated Cameras Multi-touch Locating Method Based on Look-up Table

作　　者：王德鑫[1] 熊志辉[1] 张茂军[1] 

机构地区：[1]国防科技大学信息系统与管理学院系统工程系,长沙410073

出　　处：《计算机科学》2009年第11期251-253,282,共4页Computer Science

基　　金：国家自然科学基金(60705013;60773023);湖南省自然科学基金(08JJ5027)资助

摘　　要：针对多重触控技术中的多触点遮挡难题,提出一种基于四路摄像头协同的多触点定位方法。该方法利用矩形交互区四顶点处的四路摄像头同步获取交互区图像,检测目标触点,根据光的直线传播原理和交互区尺寸参数约束构建四条代表触点方向的直线,最后拟合四条直线交点定位出触点位置。实验证明,该方法能有效解决多触点遮挡问题,可支持任意多个触点的精确定位,而且成本低,安装方便,易于移植。To solve the occlusion of multi touch, this paper presented a multi-touch locating method based on the collaboration of four cameras. It used four cameras fixed at each corner of the frame to capture images synchronously, detected objects in each camera, built lines directing the object according to the principle of geometric optics and physical dimension constraint of the frame, and finally calibrated with the four cameras to locate each object. Experimental results show that this method can locate multi touch precisely even under occlusion and it is low cost, easy to install and transplant.

关 键 词：多重触控 人机交互 表面计算 触点定位 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]