CityGRID Modeler
Overview
Lets you quickly create 3D building models from a wide variety of surveyed data formats. Data is imported directly from CityGRID Manager (if working with a RDBMS) or from CityXML (XML) or AutoCAD files. Data can be exported directly by CityGRID Manager to XML, 3D Studio or VRML files to name but a few formats. Modeler runs as a plug-in to the industry ‘standard’ 3D Studio Max giving users the full functionality of 3DS for their modelling needs.
Modelling using property lines
CityGRID uses a line structure, as opposed to the more conventional face structure, to define the geometry of the building (unit). CityGRID generates the faces automatically from the line structure. Working with a line structure enables simple and efficient editing processes to be used. It also allows us to automate a number of QA processes and cleaning tools because the data is logically structured. The 3D line structure can be completed using textures (images) or enhanced façade information from terrestrial laser scan point-clouds, to improve the information content of the 2D image.
Improving the line structure
CityGRID Modeler has powerful editing functions to enable the line structure of buildings to be improved. Any defects in the line structure can be detected quickly using the automatically derived model surface. Only slight topological improvements are generally needed to line work that is derived from standard photogrammetric modelling processes. Repetitive editing tasks, such as generating a roof overhang, can be automated.
Texturising
Use the texture tool for a quick and easy photorealistic texturing of building models. Derive the roof texture automatically from oriented aerial images. Use pictures from handheld cameras or oblique aerial views for facade texturing.
Modeling the underground
CityGRID can work above and below ground. The face generation algorithms work equally well with features below the ground as they do with those above the surface. This enables subterranean features to be incorporated into the city model (for example transit systems).
