简介：Theexploitationofdifferentnon-rigorousmathematicalmodelsasopposedtothesatelliterigorousmodelsisdiscussedforgeometriccorrectionsandtopographic/thematicmapsproductionofhigh-resolutionsatelliteimagery(HRSI).Furthermore,thispaperfocusesontheeffectsofthenumberofGCPsandtheterrainelevationdifferencewithintheareacoveredbytheimagesontheobtainedgroundpointsaccuracy.Fromtheresearch,itisobviouslyfoundthatnon-rigorousorientationandtriangulationmodelscanbeusedsuccessfullyinmostcasesfor2Drectificationand3Dgroundpointsdeterminationwithoutacameramodelorthesatelliteephemerisdata.Inaddition,theaccuracyuptothesub-pixellevelinplaneandaboutonepixelinelevationcanbeachievedwithamodestnumberofGCPs.

简介：AgeometricalgorithmforTilted-CameraPerspective（TCP）projec-tionisproposedinthispaperbasedontheprincipleofperspectiveprojection.Ac-cordingtothat,thedifferencebetweenTCPprojectionandExternalPerspective（EXP）projectionisanalyzed.Itisputforwardprerequisitesmakingthesetwoprojectionswerecompatible,andsomeexamplesaregiven.