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ID:48189863
大小:5.20 MB
页数:16页
时间:2020-01-18
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1、TrueOrthoProductionArttuSoininenTerrasolidLtdWhatisarawimage?Oneperspectiveimage(=photograph)Whatisarawimage?Whatisarectifiedimage?Image(s)projectedtorectificationsurfaceWhatisarectifiedimage?Orthographicimage(asseenfromabove)Whatisatrueortho?Relevantobjectsatcorrectx
2、ylocationShadowedareasintrueorthoAreasnotseenbyimageryExamplesiteRectifiedtogroundHowaboutsurfacemodel?BothgroundandroofpointsOrthorectifiedtosurfacemodelRectifiedtoground+vectorroofsVectorizedroofplanesaddedtosurfaceTrueorthoHiddensurfacestakenintoaccountPerfecttrueo
3、rthorequirementsOption1eachpixelrecordedverticallyflightlinessensorwidthapartconsecutiveimagessensorwidthapartOption2normalperspectiveimageryenoughimagestoavoidhiddenpixelsperfect3Dmodelofeverythingground,buildings,lampposts,trees,cars,people,…Trueorthoproductionchall
4、engesAllrelevantobjectsneedtobemodeledmodelshouldmatchimagesclosetopixellevellabourintensiveWedonotseeeverythingallverticalobjectscausecoveragegapsintheproductTerraPhotodevelopmentstageNewfeatureFirsttrueorthoproducedNovember2nd2002Desirablefutureimprovements:Vertical
5、wallhandlingfortowersImprovementsforroofedgesFasterspeed
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