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1、ConferenceNameDetectionofInfraredLowSkytargetsBasedonFPGA+DSPXUshi-wei1,ZHOUchang-chun2,LIUyan-yan1,ZHANGsheng-chong1,WEIdong1Abstract—FPGA(FieldProgrammableGateArray)implementsimagepre-processing,includingsinglepointNUC（non-uniformitycorrection）andTwopointNUC,badpixelsreplaceofneighboringpixel
2、s,self-adjustingimageenhancement,3×3medianfilter,double-thresholdvaluecannyoperatoredgedetectionandtheimagebinary.DSPimplementstargetdetection,trackingandremovetheinterruptbyusingtheapparenthorizondetection,theframedifference,region-grow,andmulti-informationfusionalgorithms.ItusesFPGAwithDSPtow
3、orktogether,dividingtheworkclearanddefinite,andrealizeconvenience,lessvolumeofhardware,highspeedofimageprocessing.Itcanget9mswithfrequencyof100Hzfor640×512IRimages,ithasstrongpracticalvalueIndexTerms—Non-uniformitycorrection（NUC）；Medianfilter；Cannyalgorithm；Targetdetection；InformationfusionI.IN
4、TRODUCTIONThemainapproachestoinfraredpointtargetsdetectionandtrackingarethegray-cumulateddetectionapproach,thetrack-searchapproach,andtheprojectionchangeapproach,theheredityalgorithm,nervenetalgorithm,morphologicalfilter,divisiontypeintangiblefilter,wavelettransform,division,entropy,multi-spect
5、rumcharacteristicanalysis,multi-vectorsgradsvotingdetection,Contourlettransformandsoon.AllofthesealgorithmshaveagoodeffectonPCplatform,butithasverylargethroughputdataandcannotgetagooddetectionperformanceontherequirementofhighrealtime.IRFPAshavetheproblemofNUC,invalidpixels,noiseandsoon.So,itisn
6、ecessarytocorrecttheIRimage’snon-uniformityandcompensatetheblindpixelsbeforetargetacquisitionalgorithmtoprovidegoodimagesfortheimageprocessingunits.IfalloftheseworksweredonebyDSPalone,itmustaddworkstoDSP,thuscausingDSPcouldn’tkeepupwithframefrequency.ThispaperassignstheDSPandFPGAtofinishthesoft
7、algorithmsaccordingtotheIRimageprocessingdata.ItmakesbestuseofFPGAparallelprocessingabilityandDSPflexiblestructureandtherealtimeprocessingability.II.ALGORITHMFLOWOFFPGAANDDSPThefunctionofFPGAistheimagepre-processing,captionoverlap
