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1、Three-DimensionalJournalofDonghuaUniversity(Eng.Ed.)Vo1.24?No.1(2007)39Three.DimensionalMeasurementandRecOnstructiOnofFabricDrapeShapeSHENYi(沈毅),YINHong?yuan(尹红媛),LIUXuan-mu(~lJ玄木)CollegeofMechanical&Automation,ZhejiangSci—TechUniversity,Hangzhou310018,ChinaAbstract:Thispaperintroducesanewme
2、thodofmeasuringthethree.dimensionaldrapeshapeoffabricswithstructurallight.First,weapplyparallelannularstructurallighttoformlightandshadealternatingcontourstripesonthesurfaceof~brics.WethencollecttheimagesofcontourstripesusingChargeCoupledDevice(CCD).Subsequently,weprocesstheimagestoidentifytheco
3、ntourstripesandedgesoffabrics,andobtaintilefabriccontourlinesofcurvedsurfaces.Finally,weapplythree-dimensionalcurvedsurfacemodelingmethodbasedonanetworkofpolarcoordinates.andreconstructthethree-dimensionaldrapeshapeoffabrics.Experimentsshowthatourmethodiseffectiveintestingandreconstructingthree-
4、dimensionaldrapeshapeoffabrics.Keywords:fabricdrape,rtorl-colqZ.act能"t艇,structurelight,imageprocess,three-dimensionreconstruction.cLcnumber:TS101.923.1Documentcode:AArticleID:1672—5220(2007)01—0039一O4IntroductionFabricdrapeshapeplaysanimportantrolethatinfluencestheaestheticfeelingofthefabricvisu
5、ally.Currently,thetestoffabricdrapeshapeisusuallybasedontheumbrellaprojectionmode(F.R.L.).IntheFRLmethod,theoverhangingfabricsprojectionareaismeasuredthroughtwo-dimensionalprojection,andmeasurementssuchasdrapecoefficient,livelyrate,numberofcontourripplesareobtainedE一.However,fromvisualandaesthet
6、icperspective,fabricdrapeshapeshouldbeexaminedfromthree.dimensiona1.Therefore,itisnecessarytodevelopathree-dimensionaltestsystemtoreflectthecharacteristicsoffabricsdrape.111ispaperintroducesanon-contactmeasurementmethodthatisbasedonmeasuringandsimulatingthe3Dshapeoffabricssampleusingthecontourli
7、neofstructurelight.Wewillfirstsummarizethebasicprinciplesofthethree-dimensionalmeasurementandthestructureofdrapetestin~device.Wethenintroducethemethodsofidentifyingtheimageoffabricsedgeoutlineandcontourline.Finally,wedescrib
