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VIRGOS SYSTEM - APPLICATION FOR DEVELOPMENT OF URBAN AREAS STUDY
Eng. Calin-Daniel NITU
Research Agency for Military Techniques & Technologies,
Minister of National Defense, Bucharest, Romania
<cnitu@pcnet.pcnet.ro>
Prof. dr. eng. Florea ZAVOIANU
Faculty of Geodesy,
Technical University for Civil Engineering, Bucharest, Romania
ABSTRACT
The integration of remote sensing data in Geographic Information Systems offers the chance to significantly improve the knowledge and
understanding of global processes on the Earth. The new and more advanced satellite system currently under development or already
in orbit will produce huge amounts of valuable data
Capacity of the software developed into the VIRGOS project, project co-financed by European Commission in order to finalize an
European Geographic Information System able to handle in the same time vector and raster data, and to provide easy access to
different users at this data, will launch this system, among others, on a market in continue development
For implementation of this system it was established a consortium composed by Matra Systemes & Information (MS&I)- France,
responsible with the core of the system based on Multiscope software for raster data (satellite images and scanned photogrammetric
images), Geometria GIS House (Geometria) - Hungary, which included in the system the TopoLogic software for vector data handling,
Academy of Science - Belarus Republic (ASBR), which included in the system a Vectorisation algorithm, and Military Topographic
Department (DTM) — Romania, which tested the system prototype, by a study case regarding monitorisation of urban and sub-urban
areas of Bucharest city
In this paper it will be presented some results of the study case
RESUME
L'intégration des données de télédétection dans les Systémes d'Information Géographique offrent la chance du
perfectionnement significatif des connaissances et la compréhension des transformation globales de la Terre. Les nouveaux systémes
satellitales avancés en cours de développment on qui sont dija sur l'orbite, produiront une immense quantité de données importantes
La capacité du logiciel développé dans le cadre du project VIRGOS, co-financé par la Commision Européenne afin de
finaliser le Système d'information Géographique Européen capable de gérer en ménu temps des donnüs vecteuriclles et raster et de
permettre un accés facileà des defferents utilisatens de ces dannées, lancera ce systéme sur une marché en continu développement.
Afin d'implementé ce systeme à été créé un consortium européen formé de Matra Systemes & Information (MSA&!) - France,
coordonnateur du project qui a fourni le noqau du systém-le Inqgiciel Multiscope. Geometria GIS House (Geometria) de Honarie, qui a
fourni le logiciel Topofogic qui gére des donnus vecteuriclles et raster, l'Academie des Sciences de la Republique Belarus
(A S BR ), qui a fourni /e module de conversion de donnüs raster binaires en données vecteurielles et la Diréction Topographique
Militaire (D T M ) de Romanie, qui a testé le prototype du systeme dans un étude de cas concernant la poursuivre d'évolution d'une
zone urbane du municipe Bucarest
Dans cet article on va prisenter qvelqnes résultats de cet étude de cas
KEY WORDS: GIS, Urban area, Vector, Raster
The objectives of VIRGOS, in the frame of current
research and development project, were to investigate the
concepts, to design the algorithms and to implement an
experimental version of an integrated system. This
integrated system based on the currently available
1 VIRGOS PROJECT OVERVIEW
1.1 VIRGOS an European project
In 1994, European Union (EU) launched a research-
development program, named COPERNICUS, for
supporting the European companies in development of
new information systems, and for improvement of the
existing one. This program is co-financed by European
Commission (CEC).
Inside this frame, in 1995, started the VIRGOS project
(Vector and Image integration for Remote Sensing and
Geographic Information Systems), under name COP94
00944.
1.2 Objectives of VIRGOS project
Spatial information systems of the previous period usually
could be assigned to two different groups, raster
orientated ones, and vector oriented ones.
technology had to unify the image processing and vector
management facilities of the original base systems.
1.3 Architecture of the system
The VIRGOS system is built up by integrating the two
parent systems, Multiscope and TopoLogic, and is
organized as a set of co-operating sequential processes,
server and client processes. These processes
communicated with each other via messages transferred
by a socket mechanism. These processes are:
a. Multiscope central environment: it controls the system
and is a modified standard Mulfiscope process by
adding specific action for activation of TopoLogic and
Vectorisation processes;
b. Image visualization: it is a Multiscope standard
process able to display both raster and vector data,
and is client of one Visualization server;
Intemational Archives of Photogrammetry and Remote Sensing. Vol. XXXII, Part 7, Budapest, 1998 731
