Détail de la notice
Titre du Document
Correction et amélioration des résultats de la stéréoscopie par corrélation : application au MNE urbain
Correction and improvement of the results from stereoscopy by correlation : application to urban DEM
Workshop " 3D Geospatial Data Production: Meeting Application Requirements ", Paris, April 7-9, 1999
Auteur(s)
DEVERNAY F. ; DEVADE J.
Corporation(s) du ou des auteurs
International Society for Photogrammetry and Remote Sensing ; WG II/6 INT (Commanditaire)
Résumé
Stereo by correlation can be used to produce urban DEM without a priori knowledge on the shape of buildings, as opposed to feature-based methods. Nevertheless, this method suffers from several weaknesses, e.g. at depth discontinuities located near roof borders. The classical solution is to use a correlation method with adaptive windows [Kanade et Okutomi, 1994], but we propose an alternate solution which consists in post-processing the DEM obtained by correlation. This method is based on a combination of morphomath and anisotropic diffusion techniques, and uses the local contrast of the orthoimage to determine which image areas hooked on the correlation window.
Editeur
Société française de photogrammétrie et télédétection
Type du document
Conférence : Workshop " 3D Geospatial Data Production: Meeting Application Requirements ", Saint-Mandé, FRA, 1999-04-07
Identifiant
ISSN : 0244-6014 CODEN : BSFTDK
Source
Bulletin - Société française de photogrammétrie et de télédétection A. 1999, n° 153, pp. 52-54 [Illustrations : Illustration] [bibl. : 2 ref.]
Langue
Français
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