The Right to Build is defined by textual elements that determine what an owner can build on a parcel. Such regulations contain elements that can influence the development of territories. Expressed through legal texts, their effects on the territory are difficult to assess because of the documents’ complexity and of the diversity of urban configurations. In this paper, we present a generic and extendable model to represent such regulations. This model is based on (1) a representation of geographical concepts (attributes, features and relations) mentioned in regulations and (2) rules formalized with Object Constraints Language (OCL). We also propose an implementation that allows the handling of formalized rules in order to check if a building configuration proposal respects urban regulations. Many applications are possible in order to assist in the conception of such regulations, land acquisition strategy or territorial evolution studies, in this article, we notably describe a future application dedicated to assist building permit surveyors.

3U3D - Usage, Usability, and Utility of 3D City

Keywords: 3D geo-visualization, Public participation, simulation, stylization, urban regulation 3D geo-visualization is more and more used and appreciated to support public participation, and is generally used to present predesigned planned projects. Nevertheless, other participatory processes may benefit from such technology such as the elaboration of urban planning documents. In this article, we present one of the objectives of the PLU++ project: the design of a 3D geo-visualization system that eases the participation concerning local urban plans. Through a pluridisciplinary approach, it aims at covering the different aspects of such a system: the simulation of built configurations to represent regulation information, the efficient stylization of these objects to make people understand their meanings and the interaction between 3D simulation and stylization. The system aims at being adaptive according to the participation context and to the dynamic of the participation. It will offer the possibility to modify simulation results and the rendering styles of the 3D representations to support participation. The proposed 3D rendering styles will be used in a set of practical experiments in order to test and validate some hypothesis from past researches of the project members about 3D simulation, 3D semiotics and knowledge about uses.