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一种基于激光虚拟键盘按键定位的方法(英文).docx

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一种基于激光虚拟键盘按键定位的方法(英文) AMethodforKeyPositioningofLaserVirtualKeyboardBasedonLaser Introduction Withthedevelopmentoftechnology,traditionalkeyboardshavebecomeoutdated,andvirtualkeyboardsarebecomingincreasinglypopularduetotheirconvenienceandeaseofuse.Comparedtotraditionalkeyboards,virtualkeyboardsdonotrequirephysicalbuttons.Instead,theyrelyonsensorstodetecttheuser'sinputandcreateavirtuallayoutofakeyboard.Onetypeofvirtualkeyboardisthelaservirtualkeyboard,whichusesalasertoprojectavirtualkeyboardontoanyflatsurface. Inthispaper,weproposeamethodforkeypositioningofalaservirtualkeyboardbasedonalaser.Thisapproachwillsolveissuessuchaskeystrokeaccuracy,keystrokesensitivity,andthedifficultyofpositioningkeys.Theproposedmethodprovidesanewsolutiontotheproblemofkeystrokepositioninganddetectioninvirtualkeyboards. Method Theproposedmethodisbasedontheuseoflaserstoassistinthepositioningofthekeys.Themethodhasthreemainsteps:keyidentification,keystrokedetection,andlasertracking. 1)Keyidentification:Whenthelaservirtualkeyboardisused,thevirtualkeyboardlayoutisprojectedontoaflatsurface.Usingimagerecognitiontechnology,thepositionofthevirtualkeyboard'skeyscanbeidentified.Oncethekeyshavebeenidentified,thesystemcanbeginthekeystrokedetectionprocess. 2)Keystrokedetection:Usingacamera,thesystemmonitorstheareaofthevirtualkeyboard.Whenausertypesonthevirtualkeyboard,thecameradetectsthemovementoftheuser'sfingersandrecordsthekeystroke. 3)Lasertracking:Afterthekeystrokehasbeenrecorded,alaserisusedtotrackthekeystrokeforbetteraccuracy.Oncethelaserhasbeenpositioned,itwillfollowthepathofthekeystroke.Thelaserwillbeusedtodeterminetheexactlocationofthekeystrokeforprocessing. Results Ourmethodhasshownpromisingresultsinthepracticalapplicationofthelaservirtualkeyboardinvariousenvironments.Ourresearchhasshownthattheuseofalasertotrackthekeystrokecanincreasetheaccuracyofthevirtualkeyboard.Additionally,thelasertrackingtechnologysignificantlyimprovesthesensitivityofkeystrokes,makingiteasierforuserstotypeonthevirtualkeyboa