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Novel drawing algorithms and application of texture mapping for 2D cartographic line symbolization / Fei He (2008)
Titre : Novel drawing algorithms and application of texture mapping for 2D cartographic line symbolization Type de document : Thèse/HDR Auteurs : Fei He, Auteur ; Lorenz Hurni, Directeur de thèse Editeur : Zurich : Eidgenossische Technische Hochschule ETH - Ecole Polytechnique Fédérale de Zurich EPFZ Année de publication : 2008 Collection : Dissertationen ETH num. 17439 Importance : 167 p. Format : 15 x 20 cm Note générale : bibliographie
A dissertation submitted to ETH Zurich for the degree of doctor of sciencesLangues : Anglais (eng) Descripteur : [Termes IGN] figuré linéaire
[Termes IGN] objet géographique linéaire
[Termes IGN] symbole graphique
[Termes IGN] texturage
[Vedettes matières IGN] GénéralisationIndex. décimale : 37.70 Généralisation Résumé : (auteur) A high quality map is characterized by the appropriate presentation of the basic graphic elements, including points, lines and areas. At present, most of the commonly used graphic software was designed for general purpose of digital image production; many cartographic principles are not completely satisfied. As a result, a time-consuming modification work is typically required for a convincing cartographic product.
In this thesis, two approaches were studied to improve this situation by focusing on one graphic element, the line. The first approach is dealing with cartographic elaborations of line geometries. New drawing algorithms were developed to generate lines better satisfying the cartographic requirements. Many unsatisfied presentations that often occur at line ends, turns and intersections, can be avoided during the rendering process.
The second approach aims to enrich the line symbols, covering both categories and visual qualities. First, efficient drawing methods were developed to draw some complex lines, including both single and multiple lines. Second, the computer graphic technique of texture mapping was the first time introduced into cartography; which turns out to be an interesting tool to greatly improve line symbolizations. These achievements lead to the production of a new program, SmartLine. It contains a flexible editorial environment, allowing map makers to adjust the graphic attributes of line symbols easily. This work aims to improve the generation of line symbols, which is not only useful for cartographers but also for general users of the interactive map products.Numéro de notice : 17193 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Thèse étrangère Note de thèse : Doctoral dissertation : Sciences : ETH Zurich : 2008 En ligne : http://e-collection.library.ethz.ch/view/eth:30768?q=fei%20he Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81160 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17193-01 37.70 Livre Centre de documentation Géomatique Disponible