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A stereo matching algorithm for urban digital elevation models / Olivier Dissard in Photogrammetric Engineering & Remote Sensing, PERS, vol 66 n° 9 (September 2000)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 66 n° 9 (September 2000) . - pp 1119 - 1128 Titre : A stereo matching algorithm for urban digital elevation models Type de document : Article/Communication Auteurs : Olivier Dissard , Auteur ; Caroline Baillard , Auteur Année de publication : 2000 Article en page(s) : pp 1119 - 1128 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique [Termes IGN] appariement de formes [Termes IGN] corrélation à l'aide de traits caractéristiques [Termes IGN] corrélation par régions de niveaux de gris [Termes IGN] couple stéréoscopique [Termes IGN] milieu urbain [Termes IGN] modèle numérique de surface Résumé : (Auteur) A stereo matching algorithm dedicated to complex urban scenes is described. It relies on successive complementary matching steps, based on dynamic programming. First, intensity edges of both images are matched, which produces piecewise continuous 3D chains. This provides a description of the scene structure containing the highest elevation of most height discontinuities. Then the interval pairs defined by the matched edges are matched in a hierarchical way, by a radiometrically constrained process followed by a geometrically constrained one.The novelty of the approach lies in the use of several successive steps appropriate to different kinds of pixels. It provides dense disparity maps with less noise, while preserving discontinuities, which are a characteristic of urban digital elevation models. The method has proved reliable (producing few noisy and altimetrically accurate 3D data) and fast, and is robust to image variability. Perspectives within an industrial production context are discussed. Numéro de notice : A2000-168 Affiliation des auteurs : IGN (1940-2011) Thématique : IMAGERIE Nature : Article DOI : sans En ligne : https://www.asprs.org/wp-content/uploads/pers/2000journal/september/2000_sept_11 [...] Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=21584 [article]