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时间:2017-12-08
《基于opencv的摄像头动态手势轨迹识别及其应用_江超》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、JournalofComputerApplicationsISSN1001-90812012-07-10计算机应用,2012,32(S1):128-133CODENJYIIDUhttp://www.joca.cn文章编号:1001-9081(2012)S1-0128-06基于OpenCV的摄像头动态手势轨迹识别及其应用*江超,艾矫燕(广西大学电气工程学院,南宁530004)(*通信作者电子邮箱a520jc@163.com)摘要:利用OpenCV计算机视觉库在vs2008平台上设计了一个基于实时摄像头的集动态手势检测、动
2、态手势跟踪、动态手势轨迹识别的应用。首先,该应用基于静止的背景更新,利用背景差分检测运动手势,再结合颜色直方图的粒子滤波进行动态手势跟踪,最后利用隐马尔可夫模型(HMM)进行运动轨迹识别。在运动检测部分结合了背景差分图与通过颜色直方图获得的反投影图,达到比较满意的实时运动检测效果;在运动手势跟踪部分,改进的颜色直方图的粒子跟踪能够在经过类肤色人脸的干扰后迅速地找回运动手势,基本达到了跟踪的要求,但是同时对于HMM识别轨迹时需要的运动轨迹序列采集造成了影响;在识别轨迹部分,HMM的训练达到了识别的要求,但是识别的效果主要
3、取决于实时运动轨迹序列的采集工作与采集方法的优化。关键词:OpenCV;摄像头;粒子跟踪;HMM;轨迹识别中图分类号:TP391.41文献标志码:ADynamicgesturetrajectoryrecognitionanditsapplicationdesignforcamerabasedonOpenCV*JIANGChao,AIJiao-yan(SchoolofElectricalEngineering,GuangxiUniversity,NanningGuangxi530004,China)Abstract:Us
4、ingOpenCVcomputervisionlibrary,theauthorsdesignedanapplicationinvs2008platform,whichwasbasedonreal-timecameraandmadeupofdynamicgesturedetection,dynamicgesturetracking,dynamicgesturetrajectoryrecognition.Firstly,theapplicationbasedonstaticbackgroundupdate,usedthe
5、backgroundsubtractiontodetectmotiongestures;secondly,itusedparticlefiltercombinedwiththecolorhistogramfordynamicgesturestracking;andthen,itusedtheHiddenMarkovModel(HMM)fortrajectoryrecognition.Inpartofmotiondetection,combinedwiththeprojectionmapfromcolorhistogra
6、mandbackgroundsubtraction,itcangetsatisfactoryeffectofreal-timemotiondetection;inpartofmotiongesturetracking,theparticletrackingwithimprovedcolorhistogramcanquicklygetbackthemotiongestureswhengoingthroughinterferenceincolorofskin-likeface,whichbasicallymeetthetr
7、ackingrequirementsbutinfluencesthecollectionofHMMtrajectorysequence;inpartoftrajectoryrecognition,thetrainingofHMMmeetstherequirementsofrecognition,buttheeffectofrecognitiondependsonthecollectionworksofreal-timetrajectorysequenceandthetheoptimizationofcollection
8、method.Keywords:OpenCV;camera;particletracking;HiddenMarkovModel(HMM);trajectoryrecognition0引言1OpenCV简介动态手势识别的一个重要用途是人机交互,而且对智能OpenCV是Intel开源的计算机视觉库(opensource控制和视频监控
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