基于双投双定位的超宽屏交互式电子白板系统

发布时间：2018-03-24 21:46

本文选题：超宽屏　切入点：红外超声定位　出处：《计算机应用》2015年S2期

【摘要】：交互式电子白板是一种利用投影机将计算机上的内容投影到屏幕上并能发生实时交互的系统。传统交互式电子白板遇到强抗干扰技术、定位校准算法瓶颈而导致交互范围小、定位精度差和响应速度延时严重,满足不了阶梯大教室和会议室等场合的宽屏交互需求的现状。基于多投多定位的超宽屏交互式电子白板系统利用国际领先的远距离红外超声精确定位技术,结合多屏幕融合技术、差分特征提取及双阈值的强抗干扰放大技术,实现了4 m×2 m超宽投影屏幕上的全屏交互。系统是国内第一台4 m×2 m且可拓展屏幕的超宽屏交互式电子白板,有着毫米级的定位精度,能够进行实时系统响应,突破了当前电子白板的书写精度不高和书写屏幕窄小的技术瓶颈。
[Abstract]:Interactive electronic whiteboard is a kind of system which can project the contents of computer onto the screen and can interact in real time by using projector. The traditional interactive whiteboard meets strong anti-interference technology, and the bottleneck of positioning and calibration algorithm leads to a small interactive range. The positioning accuracy is poor and the response time delay is serious. It can not meet the need of wide screen interaction in large classrooms and meeting rooms. The ultra-wide screen interactive electronic whiteboard system based on multi-throw and multi-location makes use of the international leading infrared ultrasonic accurate positioning technology. Combined with multi-screen fusion technology, differential feature extraction and double threshold strong anti-jamming amplification technology, The system is the first 4m 脳 2m and expandable screen interactive electronic whiteboard in China, which has a positioning accuracy of millimeter level, and can make real-time system response. Break through the current electronic whiteboard writing accuracy is not high and writing screen narrow technical bottleneck.
【作者单位】：广东工业大学自动化学院;
【基金】：广东省教育部产学研合作专项资金资助项目(2012B091000075)
【分类号】：TP334.3

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