3D geodata comprises of innovative basic geodata products, such as 3D building models, digital terrain models, and etc. that are compiled, maintained, and distributed by an increasing number of cities and countries. Our range of services is based on the lifecycle of the digital city and its landscape models and defines a modularly-structured 3D spatial data infrastructure that can also be combined with the existing systems and, thus, optimally customized to the needs of our clients.Open White Paper
For the creation of 3D city and landscape models, virtualcitySYSTEMS offers the software solution BuildingReconstruction , in order to comprehensively derive building geometries from 3D point clouds up to a level of detail of LoD 2. We rely on the international CityGML OGC standard for the modeling of data. Therefore, we also offer specialized services for data conversions in this format, e.g. from 2D geodata, such as cadastral and raster data.
The management of 3D geodata must be scalable, robust and, to the extent possible, should be based on standardized technologies in order to guarantee long-term reliability. Thus, we efficiently use basic 3D geodata management and process automation technologies, which are specifically optimized for our data management component and virtualcityDATABASE
The goal of a 3d SDI is to provide available data to an increasingly larger user group in the most efficient manner. This goal applies first for the provisioning of data in various formats, which is enabled by virtualcityWAREHOUSE, and secondly, for the presentation in the interactive 3D webmapping applications, for which we providevirtualcityMAP technology. All components of our 3D SDI can be linked to each other with virtualcityPUBLISHER, a web-based authoring tool.
What is CityGML?
CityGML is a technically neutral information model and XML-based data format for describing and exchanging virtual 3D city and landscape models. It enables the modeling of the significant objects in a city with regards to their 3D geometry, 3D topology, semantics, and visual appearance. It provides explicit relationships and component hierarchies between the objects. Through the abundant information content of CityGML models, not only it is possible to visualize urban structures, but to provide technical applications, such as city planning and marketing, environmental analyses, 3D cadasters, or complex simulations as well.
Official website: http://www.citygml.org/
Open, interoperable, extensible
CityGML is modularly structured and covers various thematic areas of a city: covering buildings, traffic zones, vegetation, bodies of water as well as land use and terrain. Each object in the city can be represented in various level of detail (LoD). One single model is sufficient to provide various application scenarios depending on the field and the required accuracy. Moreover, with Application Domain Extension (ADE), CityGML offers a flexible possibility of supplementing the data model with domain specific object types and attributes, therefore guarantees a high degree of interoperability with other systems.
International OGC Standard
CityGML is being developed by a Special Interest Group 3D (SIG 3D) since 2002. As of 2008, CityGML has become an open standard of the international Open Geospatial Consortium (OGC). Experts at virtualcitySYSTEMS have been leading the further development of CityGML in the OGC as well as in the SIG 3D.
Distribution of CityGML
In Germany, the standardized provisioning of statewide CityGML LoD1 and LoD2 building models is stipulated nationwide on the basis of a decision by the Cadastral and Surveying Authorities of the States of the Federal Republic of Germany (AdV). Both the demand as well as the influence of CityGML continues to grow on both the European and the international levels. In 2012, the national 3D standard, ImGeo, was adopted, which is defined as an extension of CityGML. The implementation of the INSPIRE building model (Annex III) is also currently being conducted on the basis of CityGML.
You provide the data, we do the rest
You want publish your 3D city models or oblique images on the internet, but are afraid of costs for a necessary 3d spatial infrastructure? We offer a hosted solution of our virtualcityMAP technology that is focused on the customer needs and simple to use. It comes along without technical barriers and allows our customers to share their 3d spatial data for internal of external use. Organizational and technical security of your data are guaranteed at all time. Just provide us the data, and we do the rest.
From implementing the web hosting to designing the 3d maps we are in close contact with our customer. When published users can freely navigate through the 3D space, can embed OGC web services like WMS or WFS, are able to measure, to simulate shadows, to query feature information, to export certain viewpoint on the scene to PDF or as a shared link. Demo Application
Once published the web application can also be extended by different functional modules. The virtualcityPUBLISHER module offers an administration backend to update and arrange contents of 3d web maps independent from the hosting provider. With the virtualcityWAREHOUSE module the maps become also a download portal that allows the distribution of features from the city model into the most common industry formats by using the FME server technology.
3D City Database
What is the 3D City Database?
The 3D City Database is an open and free database schema for storing and managing 3D city models, which relies on a spatial database system, such as Oracle Spatial or PostgreSQL/PostGIS. The database schema reflects the data model of CityGML. CityGML data can be efficiently and swiftly loaded into the 3D City Database and pulled back via an import/export application. Furthermore, the city model data can be processed as KML/COLLADA models for visualization.
The 3D City Database is an open source project and is freely available under LGPL v3.0. Official website http://www.3dcitydb.org/
Established and fully developed technologies
There are different database systems for storing and managing spatial data. The range of functions and number of successfully implemented projects, however, are considerably high with Oracle Spatial und PostgreSQL/PostGIS. The 3D City Database was intentionally based on these established basic technologies with the goal of having scalable and reliable data management, even with respect to the use of further GIS tools that are developed for these database systems.
Excellent! In 2012, the 3D City Database received the Oracle Spatial Excellence Award in the area of education and research.
3D City Database and the virtualcitySUITE
Based on our longstanding experience in practical usage of the code, we recommend the 3D City Database as a central data management component for the design and management of 3D city models. Thus, it is also a central component of our virtualcitySUITE. If you already use or plan to use the 3D City Database, we can provide you with an immediate solution for a 3D geodata warehouse and the web-based publication of your models. If a feature is missing to you, then take a look at our extension, the virtualcityDATABASE. With the virtualcityDATABASE, we are able to provide additional features much faster than it would be possible within the Open Source project. Nevertheless, we still continue being main committers for the 3D City Database.
The 3D City Database was developed within the scope of research projects on the University of Bonn and the Technical University of Berlin in collaboration with the city of Berlin and industry partners. It was offered as open source. virtualcitySYSTEMS have been involved in the development of the 3D City Database for many years. Due to their further development and application in productive systems, the Institute of Geomatics at the Technical University of Munich – under the direction of Prof. Dr. Kolbe and M.O.S.S. and virtualcitySYSTEMS have agreed in 2013 to cooperate on the further development of the 3D City Database.
Do you have questions about the design of a 3D spatial data infrastructure? We will help you to find the right solutions.
Let us know if you would like to purchase virtualcitySUITE components or test them in your infrastructure first.
We offer training for everything pertaining to 3D city models, CityGML, 3D SDI, and FME. Please look at our training programs.