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1、ⅡRESEARCHFoRTHREE—DIMENSIoNALLASERSCANNINGTECHNoLoGYABSTRACTThree.dimensionallaserscanningtechnologyisonehigh-techwhichcombineoptical.mechanic.electricwithcomputer,reflectingtheobjectiveinformationofspatialdataincludingreal-time,dynamicchanges,realmorphologicalcharacteristics.Th
2、ree—dimensionallaserscanningtechnologyhasabroadapplicationprospectsinthefieldofmultimediaanimation,reverseengineering,researchandanalysis,preservationandreconstruction.Therefore,itiSofsignificanceandapplicationvaluetostudythistechnology.Laserscanningsystemdevicewascomposedofthre
3、eparts:thelinelasersource,dualcameras,rotatingplatforms,controlplatform,dataprocessingsoftwareandotheraccessories.Thispapercouldgetthethree—dimensionalcoordinatesofthemeasuredobject’Ssurfacerapiddlybyusinganewthree.dimensionalinformationacquisitionmethod,getlaserstripebyusinglas
4、erirradiationtothesurfaceofthedetectedobjects,andextractthree.dimensionalinformationbyusingtherightandleftcameraimagesaroundthemeasuredobject.Thisparerseekedthebestsegmentationthresholdforbinarizationprocessingbyextractingtheprovisionsoftheimage.Inordertoachievethepurposeofinhib
5、ition,removingnoiseandreducetheobjectcontourextractioneffectsofnoisepointstothree—dimensionallaserscandata,itusedasimplelocalsmoothing,transfinite—pixelsmoothing,medianfiltering.Onbasisofthese,thepaperanalysedthemathematicalprincipleofCannyedgedetectoralgorithmdeeplyanddescriped
6、therealizationprocessofalgorithmadetail.Thenalargenumberofredundantinformationwascompressdtosettheminimumthresholdvalueofscreeninginthepaper,andanalyedbyimagingcameramodelanddistortionmodel,calibrationmethodinthetemplatebasedonanimprovedcameracalibration.IIIItcanmakethetradition
7、alsingle—pointmeasurementdataacquisitionintoautomaticacquisitionofmeasurementdata,byusingtheimprovedlinelaserasathree-dimensionallaserscanningsystemoflaserlightsource.SOthatitcanachievetheimprovementoftheobservation’Saccuracyandspeed.KEYWORDS:laser,three—dimensional,measurement,
8、cameraCalib—ration,noisefilteringIV??????..I???