Visualization of GML Map Using 3-Layer POI on Mobile Device

GIS can only be applied to certain areas by storing format, and it is subordinate to a system when displaying geographic information data. It is therefore inevitable for GIS to use GML that supports efficient usage of various geographic information data and interoperability for integration and sharing. The paper constructs VisualGMLthat translates currently-used geographic information such as DXF(Drawing Exchange Format), DWG(DraWinG), or SHP(Shapefile) into GML format to visualize. In order to provide a flexibility of a mobile device, VisualGML constructs integrated map preprocess module which filters geographic information data according to its tag and properties. VisualGML also provides two major GIS services for user and administrator, it can be enable visualizing location search this is applied with 3-Layer POI structure for user. For administrator, it has trace monitoring visualization through moving information of mobile devices.