示证屏中红外多重触控快速标定算法
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摘要
论文以受抑全内反射(FTIR)技术为核心,针对互动示证屏系统的技术特点,设计并实现了激光多重触控快速标定算法。分析实际应用场景中,不同光线、距离而产生的不同掩膜(MASK)的标定算法和估算方法,系统采用C/C++实现,NURBS曲面拟合,应用结果表明,论文设计的算法具有较好的实时性、运行效果稳定,用户体验效果良好,达到了系统设计要求。
In this paper,with Frustrated Total Internal Reflection technology as the core and according to the technical characteristics of interactive display system,a fast calibration algorithm for laser multi-touch control is designed and implemented. The calibration algorithms and estimation methods of different masks produced by different light and distance in practical application scenarios are analyzed. The system is implemented by C/C++ and NURBS surface fitting. The application results show that the algorithm designed in this paper has good real-time performance,stable operation effect,good user experience effect,and meets the system design requirements.
In this paper,with Frustrated Total Internal Reflection technology as the core and according to the technical characteristics of interactive display system,a fast calibration algorithm for laser multi-touch control is designed and implemented. The calibration algorithms and estimation methods of different masks produced by different light and distance in practical application scenarios are analyzed. The system is implemented by C/C++ and NURBS surface fitting. The application results show that the algorithm designed in this paper has good real-time performance,stable operation effect,good user experience effect,and meets the system design requirements.
引文
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[13]陈阔,冯华君,徐之海,等.亚像素精度的行星中心定位算法[J].光学精密工程,2013,21(7):1881-1890.CHEN Kuo,FENG Huajun,XU Zhihai,et al.Subpiexl location algorithm for planetary center measurement[J].Opt.Precision Engineering,2013,21(7):1881-1890.
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[2]Buxton B.Multi-Touch Systems that I have known and loved[EB/OL].www.billbuxton.com/multi-touch Overview.html,2012.
[3]Benko,H.,Wilson,A.D.,and Balakrishnan,R.2008.Sphere:multi-touch interactions on a spherical display[C]//In Proceedings of the 21st Annual ACM Symposium on User interface Software and Technology Monterey,CA,USA,October 19-22,2008.UIST'08.ACM,New York,NY,2008:77-86.
[4]Echtler F,Klinker G.A multitouch software architecture[C]//In:Proceedings of the(NordiCHI'08),ACM Press,New York,2008:463-466.
[5]Kaltenbrunner M,Bencina R reacTIVision:A computer-vision framework for table-based tangible interaction[C]//Proceedings of the 1st international conference on Tangible and embedded interaction,2007:69-74.
[6]李江晨,徐小维,韩君佩,等.基于同步脉冲光源的抗环境红外FTIR多点触摸算法[J].红外与激光工程,2013.(06):1415-1419.LI Jiangchen,XU Xiaowei,HAN Junpei,et al.Anti-environment infrared FTIR multi-touch algorithm based on synchronous pulse source[J].Infrared and Laser Engineering,2013.(06):1415-1419.
[7]章毓晋.图像分割[M].北京:清华大学出版社,2000:50-70.ZHANG Yujin.Image Segmentation[M].Beijing:Tsing-hua University Press,2000:50-70.
[8]贾永红.计算机图像处理与分析[M].武汉:武汉大学出版社,2001:153-172.JIA Yonghong.Computer Image Processing and Analysis[M].Wuhan:Wuhan University Press,2001:153-172.
[9]OTSU N.A threshold selection method from gray-level histograms[J].IEEE Trans SMC,1979,9(1):62-69.
[10]Bongjoe Kim,Jihoon Choi.Robust corner detection based on image structure[J].Circuits System and Signal Processing,2012,31(2):1443-1457.
[11]Shui Peng-Lang,Zhang Wei-Chuan.Corner detection and classification using anisotropic directional derivative representations[J].IEEE Trans.on Image Processing,2013,22(8):3204-3219.
[12]黄宣达.摄像机标定中亚像素级角点检测算法[J].计算机与数字工程,2008,222(4):137-139.HUANG Xuanda.Sub-piexl corner detection algorithm in camera calibration[J].Computer&Digital Engineering,2008,222(4):137-139
[13]陈阔,冯华君,徐之海,等.亚像素精度的行星中心定位算法[J].光学精密工程,2013,21(7):1881-1890.CHEN Kuo,FENG Huajun,XU Zhihai,et al.Subpiexl location algorithm for planetary center measurement[J].Opt.Precision Engineering,2013,21(7):1881-1890.
[14]LI Yushan,Young T Y.Subpixel Edge Detection and Estimationwith a Microprocess Controlled Line Scan Camera[J].IEEE Trans on PAMI,1988(5):3-6.
[15]B.K.Choi,et al.Matrix Representation for NURBSCurves and Surfaces[J].CAD,1990,22(4):235-240.
[16]X.Zhiming,C.Jincheng,F.Zhengjin,Performance evaluation of a realtime interpolation algorithm for NURBScurves[C]//International Journal of Advanced Manufacturing Technology 2002,20:270-276.