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https://hdl.handle.net/20.500.14540/103

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Browsing Engineering by Subject ",Z-THRESH"

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    A Novel Method for Real Time Pothole Detection System using Smartphones with Accelerometers
    (Pulchowk Campus, 2017-04) MAHARJAN, SUJIT
    Withthepopularityofsmartphones,alotofproblemarebeingsolvedthroughtheuseof mobileapplications.Oneoftheproblemisroadaccidentswhichoccursduetomainlythe poorconditionofroad.Teauthoritiesneedtokeeptherecordabouttheconditionofthe roadstobeabletomaintaintheroadsingoodcondition.Mobilephonewithembedded powerfulsensorssuchasaccelerometers,gyroscopesetcmakeitverypowerfulsothis thesistriestoexploitthesesensorstodevelopasystemcapableofautomaticallydetecting thepotholesinrealtime.AlgorithmslikeZ-THRESH,Z-DIFF,STDEV(Z)andZ-ZEROare widelyusedtodetectpotholesinrealtimebuttheyhaveveryhighfalsepositiveresult whenusedindividuallywiththresholdvalueskeptconstant.Inthisthesis,thethreshold valuesaremadedynamicandittakesthevalueasafunctionofspeed.Also,thepot- holesaredetectedbasedonresultofallfouralgorithms.Teusersonlyneedtoenable theapplicationwhiledrivingandallthedataaresenttotheserverandthepotholesare mappedinwebintherealtime.Tesystemdevelopedisevaluatedusingdataobtained fromcrawdad.orgdatasetandalsoverifedonthedatasetgeneratedthroughandroidap- plicationwhichshowbeterresultthanpreviouswork.