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1、上海海洋大学硕士学位论文ResearchonThree-dimensionalSkeletonExtractionAlgorithmOfMaizeBasedonKinectABSTRACTLinearskeletonisanimportantmanifestationofmorphologicalcharacteristicsoftheobject,isanimportantdescriptionofgeometry.Ithassameorsimilartopologicalstructurewithobject.Inrec
2、entyears,withthedevelopmentofinformationtechnology,theresearchonlinearskeletonbecomesmoreandmore.Studyonthreedimensionallinearskeletonoffieldcropisemerginginthisbackground.Threedimensionlinearskeletonofmaizecontainsmanyimportantparameters,suchasplantheight,leafleng
3、th,leafangel,leafazimuthandsoon.Theseparametersareveryimportanttoresearchmaize’sthreedimensionalreconstruction,thegrowthprocesssimulation,Force-bearingprocesssimulationandyieldprediction.Undernormalconditions,gettinglinearskeletonofcornplantsmainlyreliesonmanualmea
4、surement,3Ddigitizer.Acquisitionprocessiscomplicatedandrequirestoomuchmanualparticipation.Usingauniversalmethodtoextractthree-dimensionalskeletonofmaizeplantisanimportantprobleminthefieldofdigitalplant.KinectisalowcostMotion-sensingcameraanditsinternalalgorithmscan
5、automaticallycompletehumanskeletonmatchingandrecognition.Duetosignificantdifferencemaizeplantsandhuman,thealgorithmisnotsuitablefortheskeletonextractionofmaizeplants.Kinectcandiscernthesespotsandcalculatethisdepth.Therefore,usingacertainalgorithmcanconvertthedepthd
6、atatopointclouddata.Comparedwithcommon3Dscanner,Kinecthastheobviouspriceadvantageandthepointcloudaccuracycanmeetthebasicrequirementsofmaizeskeletonextraction.InviewofthecharacteristicsofKinect,thisarticleputsupwiththeresearchofgettingmaize’slinearskeletonbasedonKin
7、ect.Whichincludethefollowingaspects:(1)Accordingtothegrowthcharacteristicsofmaizeplants,theplantofthenineleafwasselectedandthenplacedintheopenexperimentalenvironment.TheplantshouldbeintheappropriaterangeofvisualfieldofKinect.BasedontheopensourceframeworkOpenNI,dept
8、hdataacquisitionprogramwasbuildandpointclouddatacanIII万方数据上海海洋大学硕士学位论文beobtainedthenStoredasPCDfile.(2)Comparedwiththemainstream3Dscannerinmarket
