摘要人脸检测技术，是指利用计算机采用一定的算法或者策略，在动态或者复杂的场景、背景中检测出人的脸部的存在，并确定人脸的位置、大小以的技术。作为人脸识别、表情识别、人脸跟踪等技术的基础和前提技术，人脸检测技术在智能控制、模式识别等其他领域也引起了广发的重视。本论文主要介绍的是基于OpenCV的人脸检测应用程序的开发，简单介绍了国内外人脸识别技术研究及应用的发展现状及其重难点分析。在第二章重点分析了AdaBoost算法中集成机器学习的一个重要机制：多个弱分类器集成的方法，机器学习中的弱学习到强学习，集成的关键是投票，最简单的方法是“绝对多数”的方法，详细分析了AdaBoost算法检测速度快、可以检测任意尺度的图像的特点。本人开发的人脸检测和识别软件是基于OpenCV的Haar级联分类器进行人脸识别，通过对OpenCV开源代码的研究学习，掌握了OpenCV提供的重要的图像分析和处理函数以及基础的数据类型、帮助的数据类型，并VisualC++集成开发环境做平台下搭建了基于OpenCV的人脸检测系统。通过对实例空间内大量图像内对目标区域即人脸的识别，证明了利用Harr级联分类器来进行人脸检测和识别的方法是一种速度快、精度高的方法。关键字：人脸检测；AdaBoost；分类器；OpenCVABSTRACTHumanfacedetectionmeansthatforagivenimageorvideo，todeterminewhetheritcontainsfaceregions，ifso，determinesthenumber,theexactlocationandthesizeofallthefaces．Humanfacedetectionisnotonlyanecessarypreconditionoffacerecognition，expressionrecognitiontechnology,facetracking，butalso，itplaysailimportantroleinapplicationslikeintheintelligenthuman-computerinteraction，videoconferencing，intelligentsurveillance，videoretrievalandsoon．Therefore，facedetectiontechnologyattractedwidespreadattentioninpatternrecognition，computervision，human-computerinteractionandotherfields．ThispapermainlyintroducesthenumberoffacedetectionapplicationprogramwhichisbasedontheOpenCV.Thispaperdescribesthenationalandinternationalrecognitiontechnologyapplicationsresearchanddevelopmentandanalysisthedifficultsituation.Inchapter2ontheanalysisoftheAdaBoostalgorithmsintegrationofmachinerytostudyofanimportantmechanism:moreintegratedapproachintheclassificationofthestudyofstudyatthelearningandintegrationisthekeytothevote,thesimplestmethodistheabsolutemajority.Also,detailedanalysisAdaBoostalgorithmtestspeed,youcandetectanyscaletheimagequality.IdevelopedtheapplicationprogrambyusingtheHaarcascadeclassifieroftheOpenCVforfacerecognition.Theso-calledHaarcascadeclassifierisagreaterlevelofclassifierwhichisassociatedwithseveralsimpleboostclassifiers,thedetectedtargetspassthrougheachclassifier,theonewhopassedthroughallheclassifierscanbejudgedasthefaceregion.Bytheexperimentofsamplephotosrecognition,itprovedthattheHarrcascadeclassifierface-detectionmethodisakindofhighspeedandprecisionmethod.Thispaper’sresearchisbasedontheOpenCVsourcecode，inwhichsomebasicdatatypeandhelpingdatatypewerecreated，andbecauseoftheopermessofthecode，webuildahumanfacedetectionsystemintheVisualC++environment.Keywords:facedetection;AdaBoost;classifier;OpenCV目录1.概述...............................................................................................................................11.1引言......................................................................................................................11.2概念介绍..............................................................................................................21.3研究现状....................................................................................................
