Integration of digital stereo images into GIS databases offers new possibilities for the end-users. This paper studies the requirements of astereo workstation needed in this utilization. The basic requirements of a stereo workstation are the capability for stereoscopic viewing and possibility to do precise 3D measurements. Especially in the GIS environment the demand to display and edit vector ...

This report is willing to give an overview of the situation regarding the geo-referencing of BIM models in GIS. The focus is made on identifying how the geographic coordinates of a construction project shall be integrated in its 3D model such that the information is kept in the context of a GIS application. We study the case of BIMs designed using the Autodesk Revit software and exported as IFC...

This paper describes a phased earthquake data collection system using the cooperation between mobile robots and a spatial temporal GIS (Geographic Information System). This proposed method features three-phased data update and models a “change region” as KIWI+ building object data. The 1st update sends the robot position and the omnidirectional images as soon as possible. At the 2nd stage, 3D (...

Recent work in computer vision has demonstrated the potential to automatically recover camera and scene geometry from large collections of uncooperatively-collected photos. At the same time, aerial ladar and Geographic Information System (GIS) data are becoming more readily accessible. In this paper, we present a system for fusing these data sources in order to transfer 3D and GIS information i...

In this paper we present a unique hybrid visualization system for spatial data. Although some existing 3D GIS systems offer 2D views they are typically isolated from the 3D view in that they are presented in a separate window. Our system is a novel hybrid 2D/3D approach that seamlessly integrates 2D and 3D views of the same data. In our interface, multiple layers of information are continuously...

SUMMARY Geo-3D Inc., a Montreal based company (Canada), offers software products and services for geomatics and GIS data collection using advanced terrestrial photogrammetric techniques. The company's products provide a mobile mapping solution integrating different sensors such as digital camera(s), GPS-INS systems, optical encoders and scanning lasers. The Trident-3D Mobile Mapping Solution is...

Extending the current “2.5D” terrain model is a necessary development in GIS. Existing 2D surface information must be extended to 3D, while trying to preserve the topological integrity. Computer-Aided Design (CAD) on the other hand is often fully 3D, which may be excessive for our “extended 2D” mapping needs. We have used the “boundary representation” (brep) design from CAD systems, based on ma...

This paper presents a system for overlaying 3D GIS data information such as 3D buildings onto a 2D physical urban map. We propose a map recognition framework by analysis of distribution of local intersections in order to recognize the area of the physical map from a whole map. The retrieval of the geographical area described by the physical map is based on a hashing scheme, which is called LLAH...

Topology and its various benefits are well understood within the context of 2D Geographical Information Systems. However, requirements in three-dimensional (3D) applications have yet to be defined, with factors such as lack of users’ familiarity with the potential of such systems impeding this process. In this paper, we identify and review a number of requirements for topology in 3D application...

Laser altimetry provides reliable and detailed 3D data, which to certain extent, can be processed (semi-)automatically into 3D information. The use of an additional source of information, like 2D GIS data, can improve the reconstruction process, especially in terms of time and reliability. This paper describes the reconstruction of 3D topographic objects by fusing medium scale map data with the...