Preliminary Study on Automatic Modeling Method of 3D Relief Symbols with Building-Up Style

The relief models made by the common modeling software are difficult to be consistent with the digital terrain model (DTM) and cannot fully express their morphological characteristics (such as the form, the structure, the spatial distributions and so on). In view of the above question, this paper advances an automatic modeling method of 3D relief symbols with building-up style. A component library of 3D relief symbols will be built, which consists of three parts: the public component library, the private component library and the metadata database. Some components of the different 3D relief symbols will be encapsulated and put into the public component library if their models can be built by the similar or the same method during the modeling process, and the others will be encapsulated and put into the private component library. Each component in the public or private component library will be described by a metadata in the metadata database. All the models of 3D relief symbols can be built by some components in the component library. The method can be used to reduce the production cost and improve the production efficiency of 3D relief symbol.