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A hybrid interpolation method for the refinement of a regular grid digital elevation model / W.Z. Shi in International journal of geographical information science IJGIS, vol 20 n° 1 (january 2006)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 20 n° 1 (january 2006) . - pp 53 - 67 Titre : A hybrid interpolation method for the refinement of a regular grid digital elevation model Type de document : Article/Communication Auteurs : W.Z. Shi, Auteur ; Yuan Tian, Auteur Année de publication : 2006 Article en page(s) : pp 53 - 67 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques [Termes IGN] grille régulière [Termes IGN] interpolation linéaire [Termes IGN] interpolation non-linéaire [Termes IGN] matrice [Termes IGN] modèle numérique de surface [Termes IGN] système d'information géographique Résumé : (Auteur) A digital elevation model (DEM), which is used to represent a terrain surface. is normally constructed by applying an interpolation method on given sample elevation points. Interpolation methods can be classified into two classes: linear methods, which have a low time cost and are suitable for terrains where there is little change in elevation, and non-linear methods, which normally consume comparatively more time and are more suitable for terrains where there are frequent changes in elevation. A hybrid interpolation method, which involves both a linear method and a non-linear method of interpolation, is proposed in this paper. The proposed method aims to integrate the advantages of both linear and non-linear interpolation methods for the refinement of regular grid DEM. Here, the bilinear is identified as the linear method, and the bi-cubic is taken to be the non-linear interpolation method. The hybrid method is an integration of a linear model and non-linear interpolation model with a parameter that defines the weights for each of the models. The parameter is dependent on the complexity of the terrain, for which a DEM is to be interpolated. The experimental results in this study demonstrate that the hybrid method is effective for interpolating DEMs for various types of terrain. Numéro de notice : A2006-025 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/13658810500286943 En ligne : https://doi.org/10.1080/13658810500286943 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27752 [article]

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