The content of data production in 3D city model is 3D Model Data (3DMD) including Digital Elevation Model (DEM), Digital Orthoimage Map (DOM) and objects (artificial and natural objects). DEM and DOM should be produced according to the traditional and mature criterion. 3D city model data production based on aerial remote sensing and 2DGIS should include three aspects: aerial survey 3D geometry model building, field texture collecting and building, terrain sight building and CAD model building for parts of objects.

3D city model building based on aerial survey mainly adopts JX4A workstation and 3D model builder 3DCM. Field texture collection relates to the usage of digital camera and image processing software Photoshop and so on. Terrain sight building should adopt 3D model builder 3DCM. CAD model building for parts of objects should adopt model builder 3DMax.
3D city model is different from 3DMax cartoon scene, virtual imitation scene, and is especially different from 3D game scene. So if we want to produce regular data product, something special should be mastered well in actual work.

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