CityGML is a recent standard developed to describe, store and exchange virtual city models. Numerous software programmes have been proposed to construct, edit, modify and visualize city models, but visualisation in a web browser is still challenging. In this paper we propose a framework based on standards for visualising a large amount of 3D city data. CityGML files are processed automatically to provide a city model composed of geometries, textures and semantics. Exchanges follow the pending Open Geospatial standard named 3D portrayal. In this paper, we also demonstrate that a solution where semantics and geometries are exchanged together is possible. An effort has been made to show that an approach based on progressive textures may also be possible.
The goal of this remote ultrasound examination project is to provide an accurate solution to practice expert examination in distant geographic areas. Starting from the statement that experts are few and far between and are located in big hospital centers, the aim of this project is to provide secure and precise scan examinations for the largest population. The high value and performance of the medical gesture are the main reasons for haptic interface use. In this goal, a haptic command station is developed to give a haptic virtual environment for the medical expert. This paper describes the virtual model of the remote patient to set up the haptic command station.
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