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DOI:
Journal of Software:2010.21(zk):123-132

MTDriver:一种改进的多点触摸桌面工具包
谭国富,刘佳升,戴志军,张凤军,王宏安,戴国忠
(中国科学院 软件研究所 人机交互与智能信息处理实验室,北京 100190; 中国科学院 研究生院,北京 100190)
MTDriver: An Improved Multi-Touch Table Toolkit
TAN Guo-Fu,LIU Jia-Sheng,DAI Zhi-Jun,ZHANG Feng-Jun,WANG Hong-An,DAI Guo-Zhong
(Intelligent Engineering Laboratory, Institute of Software, The Chinese Academy of Sciences, Beijing 100190, China; Graduate University, The Chinese Academy of Sciences, Beijing 100190, China)
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Received:May 01, 2010    Revised:November 09, 2010
> 中文摘要: 目前多点触摸桌面广泛采用计算机视觉技术实现.触摸信息是通过手指反射的红外线在红外摄像机下成像,然后对红外相机得到灰度图像进行手指区域提取,跟踪,校正得到.由于桌面表面红外光照射不均衡,环境噪声干扰等因素,目前存在的多点触摸工具包在检测和跟踪方面效果较差,也没有考虑手指运动和摄像机畸变的影响.本文提出基于图像局部极值点检测手指触摸区域,结合手指运动和相邻帧信息进行手指跟踪,实现摄像机畸变校正的多点触摸桌面系统工具包MTDriver.实验结果表明,MTDriver 跟踪识别准确,效率高,鲁棒性强,具有实用性.
Abstract:Among the implementations of multi-touch technologies, computer vision is a widely used way to build the multi-touch table. The touch information are obtained through the processing the imaging of infrared lights which comes from the reflection on touching fingers. The processing includes finger area extraction, tracking, and rectification. Because of disturbance of environment and unequally spread of the infrared lights on the surface, the image processing methods of previous multi-touch toolkits have poor performance on the detection and tracking of touch fingers, and these methods have not considered the influence of finger moving and camera distortion. In this paper, we propose a multi-touch table toolkit named as MTDriver. In MTDriver, we use local extreme area to extract the possible areas of touch fingers, then we track the motion of touch fingers by the tracking method which use the adjacent frames information. Experiments show that MTDriver has higher precision, better performance, and more robust compared with the other toolkits.
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基金项目:Supported by the National Natural Science Foundation of China under Grant Nos.U0735004, 60673188 (国家自然科学基金); the National High-Tech Research and Development Plan of China under Grant Nos.2009AA01Z337, 2009GJA00045 (国家高技术研究发展计划(863)); the National Basic Research Program of China under Grant No.2009CB320804 (国家重点基础研究发展计划(973)) Supported by the National Natural Science Foundation of China under Grant Nos.U0735004, 60673188 (国家自然科学基金); the National High-Tech Research and Development Plan of China under Grant Nos.2009AA01Z337, 2009GJA00045 (国家高技术研究发展计划(863)); the National Basic Research Program of China under Grant No.2009CB320804 (国家重点基础研究发展计划(973))
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谭国富,刘佳升,戴志军,张凤军,王宏安,戴国忠.MTDriver:一种改进的多点触摸桌面工具包.软件学报,2010,21(zk):123-132

TAN Guo-Fu,LIU Jia-Sheng,DAI Zhi-Jun,ZHANG Feng-Jun,WANG Hong-An,DAI Guo-Zhong.MTDriver: An Improved Multi-Touch Table Toolkit.Journal of Software,2010,21(zk):123-132