The Accuracy of Photogrammetry vs. Hands-on Measurement Techniques used in Accident Reconstruction.pdf

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1、TheAccuracyofPhotogrammetryvs.Hands-on2010-01-0065PublishedMeasurementTechniquesusedinAccident04/12/2010ReconstructionBryanRandlesBiomechanicalResearch&TestingBrianJonesElliott&JonesLLCJudsonWelcherandThomasSzaboBiomechanicalResearch&TestingDavidElliottElliot

2、t&JonesLLCCameronMacAdamsElliott&Jones,LLCCopyright©2010SAEInternationalimpactvehicleswereobtainedusingseveraldifferentABSTRACTcamerasandphotographers,includinganadjusterwithnoAstudywasconductedtoassesstherelativeaccuracyoftwoformaltrainingorinstructioninphot

3、ographingformeasurementtechniquescommonlyusedforvehiclephotogrammetricanalysis.Hands-onmeasurementsweremeasurementsindamaged-basedaccidentreconstruction.Theobtainedviatwogroupsofqualifiedprofessionalsinthefieldtraditionaltechniqueofhands-onmeasurementwascompa

4、redofaccidentreconstruction,withaccesstoboththevehicleswiththeuseofphotogrammetryformeasurementoftargetedandtraditionalmeasuringequipmentsuchastapemeasures,damagedvehicles.Threeundamagedvehiclesweresubjectedcrushjigandplumbbobs.to4impacts,resultingin4damageda

5、reas(twofront,onesideandonerear).Thestudy'sintentwasonlytoexaminetheTheresultsfoundthatbothmethodseffectivelymeasuredtheaccuracyofeachmeasurementtechnique.Theinfluenceofvehiclepoints,withameandifferencebetweenthebaselineotherconfoundingindependentvariablessuc

6、hasselectionofandhands-onmeasurementsof0.6±1.4cm,andameanmeasurementlocationonthevehicle,referencelinelocation,differencebetweenthebaselineandphotogrammetryanddefinitionsofwhatconstitutes“damage”,etc.weremeasurementsof0.1±1.0cm.Theaccuracyofthecontrolledforan

7、dminimizedbyusingpredefinedphotogrammetrymethodwasfoundtobeslightlygreaterthanmeasurementpointsonthevehiclesandprescribedstationthatforhands-onphysicalmeasurements.Theresultslines.indicatedthatbothphysicalinspectionofadamagedvehicleandphotogrammetricanalysisf

8、romphotographsaresuitablyThepointsoneachvehicleweremeasuredusingbothaccuratetechniquesforvehicledamagemeasurement,andintechniques,andcomparedtobaselinereferencesomecasesthephotogrammetric