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1、AbstractInsomecaseofemergency,whatcommanderspayattentiontoisnottheabsolutepositioningprecisionbuthowtoextracttrendinginformationofinterestareasinUAVimagesquickly.Inordertomeettheneedsofthatreality,theimagefastmosaictechnologyofUAVimagesusingpositionandor
2、ientationdataisstudied.Researchandinnovationsofthispaperinclude：1.ThepaperanalyzestheprocessofUAVimagemosaictechnology,especiallyfocusingonsometechnicalaspectssuchasimagegeometriccorrection,localfeatureextraction,binarydescription,featurematchingandfalse
3、matchingelimination.2.Theimagegeometriccorrectiontechnologybasedonflightpostureisstudiedandageometriccorrectionmodelisestablished.Accordingtothatmodel,tiltedimagescanbecorrectedtoverticalimageswithoutthesupportofgroundcontrolpoints,improvingtheeffectsofi
4、magemosaic.3.Thelocalfeatureextractionalgorithmandbinarydescriptorsarestudied.AseriesofexperimentsarecarriedoutusingrealUAVimagestoverifytheactualcomputationalefficiencyandmatchingperformanceofthatalgorithm.Thealgorithmandbinarydescriptorsaredevelopedloc
5、allybasedonresultsoftheexperiments.Besides,thedevelopedalgorithmanddescriptorsareappliedinthefastmosaicofpanoramicimagesalongsingleflight.4.Themethodofeliminatingfalsematchesisstudied.Aimingattheneedoffastmosaic,amethodofeliminatingfalsematchesbasedonlin
6、earconstraintsisproposed.Themethodacceleratestheprocessofeliminatingfalsematchesbycomparingtheslopeandlengthofmatchingpointconnectionlines.Besides,thresholdscanbesetflexiblyaccordingtodifferentdemandsofaccuracytogetstablematchingpoints.5.Themosaicmethodo
7、fsingleflightpanoramicimageisstudied.Thepapercomparedthreedifferentmosaicmethods’impactonthevisualqualityofpanoramicimage.Andthesingleflightpanoramicimageisobtainedbythemixedstrategyof"onebyone"and"pairwise".Themixedstrategyreducesthecumulativeeffectsofe
8、rrorsandimprovesthestabilityofmosaic.Keywords:UAV,positionandorientationdata,fastmosaic,binarydescriptors,eliminatefalsematches,panoramicimage.第III页万方数据目录摘要..................................................................
