摘要： 针对2010年上海世博会主题馆设计需求，提出并实现一种低成本的多点触摸实时互动桌面系统。以受抑全内反射(FTIR)技术为核心，介绍多点触摸屏的设计和实现。基于计算机视觉，采用改进的最小距离优先算法和字符串相似度算法，实现对交互手势的识别。通过基于软件的几何校准和边缘融合，对多投影机画面进行无缝拼接，形成一个逻辑上统一的大屏幕。应用结果表明，该系统具有较好的实时性、交互性和娱乐性。
关键词:
受抑全内反射,
多点触摸,
手势识别,
互动桌面,
屏幕拼接
Abstract: According to the design requirement of the Theme Pavilion of the World Expo 2010, this paper proposes and implements a low-cost multi-touch real-time interactive tabletop system. The design and implementation of multi-touch screen based on Frustrated Total Internal Reflection(FTIR) is introduced. Improved Minimum Distance First(MDF) algorithm and string similar degree algorithm are adopted to recognize the interaction gesture. In order to form a large screen, it adopts software-based seamlessly merging solution, which includes geometry calibration and edge blending. Application results indicate that this system has characteristics such as real-time, interactivity and entertainment.
Key words:
Frustrated Total Internal Reflection(FTIR),
multi-touch,
gesture recognition,
interactive tabletop,
screen splicing
中图分类号:
赵秋均, 王毅刚, 黄岸仲, 吴钰辉. 基于FTIR的多点触摸实时互动桌面系统[J]. 计算机工程, 2011, 37(14): 291-292.
DIAO Qiu-Jun, WANG Yi-Gang, HUANG An-Zhong, TUN Yu-Hui. Multi-touch Real-time Interactive Tabletop System Based on Frustrated Total Internal Reflection[J]. Computer Engineering, 2011, 37(14): 291-292.