简介：Thispaperdescribesthestructure,geometricmodelandgeometriccalibrationofPhotogrammetronI-thefirsttypeofphotogrammetronwhichisdesignedtobeacoherentstereophotogrammetricsysteminwhichtwocamerasaremountedonaphysicalbasebutdrivenbyanintelligentagentarchitecture.Thesystemcalibrationisdividedintotwoparts:thein-labcalibrationdeterminesthefixedparametersinadvanceofsystemoperation,andthein-situcalibrationkeepstrackingthefreeparametersinreal-timeduringthesystemoperation.Inavideosurveillanceset-up,preparedcontrolpointsaretrackedinstereoimagesequences,sothatthefreeparametersofthesystemcanbecontinuouslyupdatedthroughiterativebundleadjustmentandKalmanfiltering.

简介：Onthebasisofpreviouswork,thispaperdesignsanintelligentagentbasedonvirtualgeographicenvironment(VGE)systemthatischaracterizedbyhugedata,rapidcomputation,multi-user,multi-threadandintelligenceandissueschallengestotraditionalGISmodelsandalgorithms.Thenewadvancesinsoftwareandhardwaretechnologylayareliablebasisforsystemdesign,developmentandapplication.