Gesture Recognition by Line Fitting Over Significant Pixels.pdf

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1、GestureRecognitionbyLineFittingOverSignificantPixelsAshtoshSapru,RaviLakkundiandNisarAhmedAricentCommunicationsPvtLtd.AudioandSpeechEngineeringBangaloreIndiaashtosh.sapru@aricent.comAbstractMultimediaapplicationshaverevolutionizedmobilephoneusage,withemphasisoninteractionbetweenuserand

2、thephone.Camerabeinganintegralpartofnewgenerationphonescanbeusedtofelicitatethisinteractionusingmachinevisiontechniques.Visionalgorithmshavebeenexploredtobeportedontomobilede-vices,howeverduetoreal-timecomplexitylimitationthesealgorithmshavenotbeenlargelydeployedinembeddedmobileapplica

3、tions.Inthispaperweproposeandimplementamachinevisionalgorithmwellsuitedforembeddedapplications.Thealgorithmusesapredefinedangularmotionofhumanarmforcameracontrolpurpose.ThealgorithmbeinglowcomplexisalsoimplementedonanOMAP2420-H4board,whichislargelyusedbymobilephonemanufacturers.Keyword

4、sGestureRecognition,LFOSPPME.I.INTRODUCTIONCameracanbeefficientlyusedasauserinterfaceinFig.1.ModelOfHumanArm.applicationswheredevicecontrolfromadistanceisneeded[1],[2].Someapplicationsofcameracontrolfromadistancecanbepan,zoom,clicketc.Predefinedhandgesturescanbejointslocatedatthejuncti

5、onsofwrist,elbowandshoulder.analyzedusingvisionalgorithmswhichcanbeusedtocontrolWhenuserdoesahandwave,thewristandforearmareusuallyabovecamerafeatures.aligned,whereasthepartofarmconnectedtotheshoulderSurveyofrecentliteraturerevealsseveralalgorithmsforjointshowsminimummotion.Thisreasonin

6、gisfurtherusedgesturerecognitioninmobilephones[3],[4].Handgesturesforimageanalysis,whereonlymotionofforearminthewereusedtocontrolthemobiledevice.Howeverauthorsimageplaneisanalyzed.Thisgestureresultsinaperiodic,believethatthecomplexityrequirementsofthesealgorithmsangularmotion.Thedesign

7、ofproposedalgorithmisbasedonmakesithardertoportthemonlowcostembeddeddevices.extractingtheseperiodicandangularfeatures.Inthispaperweexploreagesturebasedonarmwavingasa1.GESTURERECOGNITIONtriggerforcameraimagecapture.Thechoiceofthisgestureasacapturetriggerwasmotivatedbythefactthathandwa