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Représentation des données spatiales à différents niveaux d'abstraction : application à l'archéoastronomie

Abstract : The map is the most natural means of transmission of geographical information. It is also an excellent support for the visualization of the analytical data on phenomena with space reference. This includes the topographic map, as well as the diagrammatic map (ex: urban grid system). For considerations related to technological constraints, the representation of the real world was discredited, in traditional cartography, by taking account of the projects and desired applications, of representations on various scales corresponding to several levels of abstraction.
The producers of maps maintain in an identical way a base of data by range of scale without any interrelationship. So in addition to the traditional problems of the redundancy of the data, and the impossibility of the propagation of the updates, the control of coherences is made very difficult. To maintain coherence and to avoid the redundancies, the ideal solution would be a base of data where geometrical information is seized on the most precise scale, and all visualizations on less precise scales would be derived automatically through processes of cartographic generalization. Unfortunately this derivation cannot be completely automated. Consequently, explicit storage several representations of the geometry of the objects (one by scale) is essential. Nevertheless several solutions were implemented to avoid the induced disadvantages, of which the implementation of a base of data multi-scale: a data base where all the necessary representations coexist and are interrelated.
We present the needs and the problems encountered by the specialists in social sciences, in particular we highlight the problems raised within the framework of a use of the GIS for the archeaostronomy, then we present the approaches of resolution of the problems as well as the presentation of the basic concepts used to solve the problems highlighted.
The preceding concepts are treated in the framework of a object oriented design (OOD). Approach OOD of the multi-représentation is based on a modelling object in UML. The validation of the preceding concepts, is presented through a concrete example. The approach is illustrated by the realization of software prototype GIS-3A under Visual BASIC what makes it possible on the one hand to implement the various concepts by using a directed design objects and on the other hand to facilitate the integration of these concepts in a GIS (Arcview).
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Contributor : El-Hadi Khoumeri <>
Submitted on : Saturday, November 17, 2007 - 3:22:30 PM
Last modification on : Thursday, January 11, 2018 - 6:16:28 AM
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  • HAL Id : tel-00188500, version 1



El-Hadi Khoumeri. Représentation des données spatiales à différents niveaux d'abstraction : application à l'archéoastronomie. Autre [cs.OH]. Université Pascal Paoli, 2007. Français. ⟨tel-00188500⟩



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