Skip to Main content Skip to Navigation

Modèle pour l’évaluation et l’amélioration de la lisibilité d’une carte géographique

Firas Bessadok 1
1 COGIT - Cartographie et Géomatique
LaSTIG - Laboratoire des Sciences et Technologies de l'Information Géographique
Abstract : In this thesis, we focus on the design and visualization of custom geographic maps by executing different stages of automatic evaluation and improvement of these maps.In the most recent mapping tools (such as Google Maps or GeoPortail) it is possible for the user to build himself a map that suits his needs using different layers of data which can come from several sources. However, the manipulation and edition of maps by non-experts can cause errors in the representation that affects the understanding of this map by its readers.That's why our research focus on improving the representation of maps created by non-expert users. Since the readability of a map depends on the visibility of objects that compose this map, in this work we propose a model which assesses the visibility of cartographic objects based on a system of five indicators of visibility (values between 0 and 1). This model then provides four methods for modifying the objects symbolization of this map, which will be used to improve their visibility. Between the evaluation and the improvement of the visibility of these objects, an analysis step is performed in order to decide whether an improvement in the symbolization is required, and if so, which of these four methods should be executed.This model takes as input a map in the form of (1) a set of layers each consisting of cartographic objects, (2) and the legend used to represent these cartographic objects. It will generate as an output (1) a set of XML files that contain the values calculated by the indicators of visibility, (2) a final map with a new representation that improve the value of these indicators of visibility. This process then provides readers with a more readable map.This work is then concluded by two tests that validate (1) our basic assumptions, (2) the actual correspondence between the indicator values and the real feel of the map readers, and finally trying (3) to determine visibility thresholds that can be used later in order to correct and refine the algorithms that are proposed in this thesis
Document type :
Complete list of metadata

Cited literature [50 references]  Display  Hide  Download
Contributor : Abes Star :  Contact
Submitted on : Wednesday, November 25, 2015 - 10:14:07 AM
Last modification on : Tuesday, May 12, 2020 - 8:28:22 AM
Long-term archiving on: : Saturday, April 29, 2017 - 1:10:45 AM


Version validated by the jury (STAR)


  • HAL Id : tel-01233405, version 1



Firas Bessadok. Modèle pour l’évaluation et l’amélioration de la lisibilité d’une carte géographique. Technologies Émergeantes [cs.ET]. Université Paris-Est, 2015. Français. ⟨NNT : 2015PEST1005⟩. ⟨tel-01233405⟩



Record views


Files downloads