全景可視化輔助泊車系統(tǒng)研究.pdf

1、合肥工業(yè)大學(xué)碩士學(xué)位論文全景可視化輔助泊車系統(tǒng)研究姓名：趙凱申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：計(jì)算機(jī)應(yīng)用技術(shù)指導(dǎo)教師：張仁斌201103TheResearchofSurroundingViewAssistantParkingSystemABSTRACTWiththeincreasingnumberofcityvehiclesthetrafficenvironmentbecomesmemecrowedwhichbringsmeinconvenien

2、cetodrivers.Whenthedriverisparkingtheaccidentiseasilyhappenedduetothesightnarrowparkingspacesetc.Thisbringsalotofunnecessaryloses.Betweenthevariousassistantparkingsystemcurrentlythesurroundingviewassistantparkingsystemis

3、abletoprovideeffectivesupptwhichcangeneratetherealtimeoverlookingimageofthevehicleeliminatetheblindspotsaroundthebody.Onthebasisoftheresearchofthekeytechnologiesofthesurroundingviewassistantparkingsystemoneprogramtoimple

4、mentthissystemisdesignedinthisthesis.Fourcamerasareinstalledaroundthevehicle.Thefrontrearvideoimageswiththeperspectiveeffectaretransfmedintotheoverlookingeffectbytheinverseperspectivetransfmthesurroundingviewoverlookingi

5、mageisgeneratedbyimagemosaic.Imageenhancementisusedtoimprovethebrightnesscontrastofthelowilluminationvideoimage.Thehardwaresoftwarestructurearedesignedinthisthesisseveralresultsareachievedasfollowing:(1)Accdingtotherelat

6、ionshipbetweentheimagecodinatesystemtherealwldcodinatesysteminverseprojectiontransfmationnearestneighbinterpolationareusedtoestablishtheinverseperspectivetransfmlookuptable.Bythistabletheconversionfromtheperspectiveintot

7、hetopviewistransfmedwithhighrealtimeperfmance.(2)Thewideanglecamerasontheleftrightsideofthevehicleissettoshootthegroundvertically.Thissaveshalfoftheimageangle’sconversiontimeunderthepremisethatthefieldofthesurroundingvie

8、wimageisguaranteed.(3)Imagemosaiciscompletedunderacertaindisttionoftheimagesurroundingviewimagemosaictableisestablishedaccdingtothespatialrelationshipbetweentheimagesofeachdirection.Thesystemcanquicklygeneratethesurround

9、ingtopviewimagebythistable.(4)Lowilluminationimageenhancementisappliedinthissystemaccdingtotheinfluencebroughtbythelowlight.Severalgenerallowilluminationimageenhancementalgithmsareanalyzedcomparedinthisthesis.Animprovedi

10、mageenhancementalgithmisdesignedcombinedwithlocalcontrastenhancementtechnology.Totallythesurroundingviewassistantparkingsystemdesignedinthisthesiscanadapttodifferentlightconditionsthesurroundingtopviewimageisabletobegene

11、ratedquicklybylookuptable.Theexperimentresultsshowtheeffectivenesstimeperfmanceofthissystem.Thesystemdesignedinthisthesisisabletosatisfytheneedsofassistantparking.Keywds::AssistantParking；InverseProjectionTransfmation；Su