Abstract A novel concept of camera modelling for underwater 3D measurements based on stereo utilisation is introduced. The geometrical description the ray course subject to refraction in cameras presented under assumption conditions, which are typically satisfied or can be achieved approximately. Possibilities simplification shown, allow an approximation by classical pinhole modelling. It shown...

3D data modelling is one of the key problems within research works of 3D GIS. This paper focused on the research of a topological model based on space partition for 3D GIS. Firstly the formal definition of 3D spatial features were given. Then the methods for calculating topological properties to support simplexes topologically equivalent to an n-manifold with (n-1)-pseudomanifold boundary cycle...

SUMMARY The planning of road, railway, and subway tracks in urban environments is a manifold task because of complex legal, environmental, economic, and structural problems. However, skills and knowledge of the participants differ substantially and computer support for complex planning still is at its beginning. Especially computer-aided collaborative planning for 3D city and building models is...

There has been an increasing interest for what could be designated as 3D Cartography or 3D Geographical Information Systems which led to the development of web based technologies for visualization and interaction of 3D city models. The Open Geographic Consortium came out with the City Geography Markup Language as a industry standard for the modelling of city landscapes and the web 3D Consortium...

Computer-Aided Design and Applications is an international journal on the applications of CAD CAM. It publishes papers in general domain plus emerging fields like bio-CAD, nano-CAD, soft-CAD, garment-CAD, PLM, PDM, data mining, internet, education, genetic algorithms engines. The aimed at all developers users technology to ptovide solutions for various stages design manufacturing. about technol...