| Résumé : |
(Auteur) This work introduces a low-cost approach to the documentation of large historic urban ensembles and their integration into the urban planning context. In addition, the work introduces low-cost alternatives for multimedia data visualisation, query and distribution, enabling the user to interact with a dynamic, virtual representation of the historic urban scenario. To realise the low-cost component, a methodology has been introduced which makes use of novel, state-of-the-art technology, as well as familiar industry standards for business modelling, data acquisition, storage and access. The Internet and Web-based technologies were used as the communication channel and tools respectively. They supplied the necessary foundations for accessing a system of co-operative, heterogeneous, multiple-platform, distributed databases. The core of an object-oriented Land Information System (LIS) based on cadastre was approached. The cadastre, a parcel-based IS, contains the basic graphic and descriptive data used to support most public administration activities. It was used in this project as a basic framework, over which other IS are built, and through which IS can communicate with each other, exchanging valuable information, rationalising their costs for data acquisition and acquiring knowledge used in their respective decision-making processes. An actual urban planning demand was analysed and modelled. Land tenure, building permits and directives of the municipal administration for the use of the soil have been represented by the Complementary Law of Urban Control (LCCU). This mechanism provides the urban planner with means of controlling city development and growth. The integration of the LCCU with IPHAN's Real State Inventory of the Protected Urban Site of Laguna throughout the development of a common data model, was a key issue for including the built heritage in the planning activities of the municipality. This assures that preservation areas, which are subject to special national, state and municipal laws, will be considered in the overall development policies of the city. The multipurpose information system introduced here is scaleable, and can therefore be extended to provide functionalities within other spheres of urban data management. Geographic information systems that act within the urban context can be applied to the cadastre as well, and make use of the 31) information system presented here for complex data visualisation and simulation (e.g. electricity suppliers ... ). Concerning the design and implementation of a multipurpose, cross-platform application to grant remote and local users access to a set of heterogeneous, distributed data-sets, a rich set of new standards, open sources and low-cost tools were synergistically combined:
Web-based tools and standard protocols: 1ITTP(TCP/X), URL, HTML, VRML, Client and Server extension mechanisms (Java Applets, Server-Side Includes, Java Servlets);
Distributed Object Model Architecture (Java RM1);
Object-Oriented (OOP) software development and Visual Modelling tools (UML);
Relational and Object-Relational Database Management Systems (RDBMS/O-RDBMS).
The result was a 3D-IS that enables a remote user to interact with the scene in a user-friendly environment, visualise, navigate, execute scenario predictions and simulations in the historical site and query and generate custom-tailored reports. |
A low cost documentation and retrieval system of distributed data sets for a historical town in Brazil (2001)
