三維點云拼接與融合技術研究.pdf

1、西南科技大學碩士學位論文三維點云拼接與融合技術研究姓名：劉偉申請學位級別：碩士專業(yè)：模式識別與智能系統(tǒng)指導教師：劉先勇20090611西南科技大學碩士研究生學位論文第1l頁Abstract3DpointcloudregistrationisacrucialproblemonresearchofreverseengineeringItisasignificantresearchdirectioninthefieldofmachinevis

2、ion，graphicsandimageprocessingrecentyearsaswellFurthermore，ithasanextensiveandurgingapplicationinthefieldsofCAD，VirtualRealityPlaneManufacturingindustryMedicineandSOonButitCall’tgetthewhole3Dsurfaceinsinglemeasurementbec

3、auseofthesingleSCanscaleandtheblockofsurfacecharacteristicsRegistrationisbecameasignificanttechnologyHoweveritisdifficultinreverseengineeringbecauseofthecomplexityandmessinessofpoint—cloudsForthesizeandcharacteristicsof3

4、Dobject，thecharacteristicsofmeasurementsystem，requirementsofregistration，wedesignseveralregistrationfunctionstofitdifferentobjectandtesttheirstabilityweintroducetwomainlyfunction，SVDandmaximumeigenvalue，whichcanresolveth

5、eSpace—transformationMatrixbycorrespondentmarkedpoint，andwealsocomparetheirprecisionusingalargenumberofexperimentaldataThen，wediscussestheregistrationprecisionbyfittingstandardspherewhosediameteris40000__000003mm，theresu

6、ltsshowthattheerrorofregistrationisnomorethan0060mmBecauseoftheregistrationerrortheoverlapregionofpointcloud，whichhasberegistrated，callnotberegistratedintosinglelayerbuthasamacro—gapAlthoughithadbeenasinglelayerthisregio

7、nisshowedashighdensityThewholepointcloudwillinfluencethemodelingandrapidprototypingSowefusethemFirst，weproposeanimprovedICPmethodsbyanalyzeICPandthecharacterofpointcloudwhicheliminatethegapbetweentwopointcloudsefficientl