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NEWS ExploringAboriginalCaves withMobile3DLaser MappingSystem ZEB1,atrulymobilehandheldrapidlasermappingsystem,hasbeenusedto exploreAboriginalcavemarkingsinSouthAustralia.UsingtheZEB1handheld mobilemappingsystem,researchershavebeenabletocreateadetailed3D surveyofthecavesystem.This3Dsurveydata,combinedwithhigh-resolution photographsandanalysisoftheflutings,canbeanalysedbyarchaeologistsfrom theSAMuseum. Thestrangemarkings,calledfingerflutings,werethoughttohavebeenleftinthe KoonaldaCavebetweenabout30,000and10,000yearsago.Createdbyhands beingdraggedalongestablishedgroovesinthesoftlimestonewalls,themarkings areextremelyfragileandcrumbleattheslightesttouch. ArchaeologistDrKerynWalshefromtheSAMuseumsaidtheZEB1isafantasticresearchtool;themodelscanbeusedinthe labwherethelightandworkingconditionsaregood.Inthecave,whichisoftenincompletedarkness,itisreallyhardtodo theresearch.DrWalshecommentedsheiskeentodeterminewhomadethemarkings;men,womenorchildren.Itisreally tempting-itisreallyhard,actually-nottotouchthesoftsurfacebecauseitissoinviting.Itisthisbeautifulpurewhitecolour, likesnow,sheadded. TheZEB1systemincludesalightweightlaserscannermountedonasimplespringmechanism.Astheoperatormoves throughanenvironmentthescannerlooselyoscillatesaboutthespringproducingarotationthatconverts2Dlaser measurementsinto3Dfieldsofview.Itsabilitytoself-localisemakesZEB1ideallysuitedforuseindoors,undergroundandin othercoveredenvironments,suchasdenseforestandurbancanyons,wheretraditionalsolutionsthatutiliseGPSdonot functionwell.The3Dsurveyofthecaves,createdusingZEB1,canbeanalysedindetailusingCAD-typevisualisation software.Thedatacanalsobeusedtocreatephysicalreconstructionsofthecavesusing3Dprinters. TheZEB1mobilemappingsystemwasdevelopedbyCSIRO,Australia’snationalscienceagency,andislicencedfrom GeoSLAM(aUKbasedstart-upcompany).ThecompetitivelypricedZEB1,nowexclusivelyavailablefrom3DLaserMapping, allowsforfastdatacapture,withoutcomplexsetuportherequirementforlengthydataprocessingandcanbeusedby surveyingnovices,inareaswithoutGPScoverage,capturingaccurate3Dpointcloudsatspeed. Aproductvideocanbeviewedhere. https://www.gim-international.com/content/news/exploring-aboriginal-caves-with-mobile-3d-laser-mapping-system
