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Auteur Gang Qiao |
Documents disponibles écrits par cet auteur (2)



Improved geometric modeling of 1960s KH-5 ARGON satellite images for regional Antarctica applications / Wenkai Ye in Photogrammetric Engineering & Remote Sensing, PERS, vol 83 n° 7 (July 2017)
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Titre : Improved geometric modeling of 1960s KH-5 ARGON satellite images for regional Antarctica applications Type de document : Article/Communication Auteurs : Wenkai Ye, Auteur ; Gang Qiao, Auteur ; Fansi Kong, Auteur ; et al., Auteur Année de publication : 2017 Article en page(s) : pp 477 - 491 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] analyse comparative
[Termes IGN] Antarctique
[Termes IGN] changement temporel
[Termes IGN] image à basse résolution
[Termes IGN] image KH-5
[Termes IGN] modélisation géométrique de prise de vue
[Termes IGN] numérisation de photographie
[Termes IGN] point d'appuiRésumé : (auteur) Long-term observations of the Antarctic ice sheet will contribute to a quantitative evaluation and precise prediction of the sea level change induced by global changes in climate. This paper proposes an improved rigorous geometric modeling method for the declassified KH-5 ARGON satellite images collected in Antarctica in 1960s. The scanned film images are preprocessed beforehand to enhance the quality for further analysis. Systematic errors such as lens distortion and atmospheric refraction are also considered and corrected. A scheme is proposed to measure the ground control points for the historical images based on modern image mosaic and DEM products. The bundle adjustment results of four blocks in regions in East Antarctica present a geometric positioning accuracy of less than one nominal pixel resolution (140 m) in both horizontal and vertical directions, outperforming the published results. A regional DEM of the ice sheet that represents the topography in 1963 is then generated from the stereo ARGON images for the first time, the evaluation of which shows its consistency with the modern product but with great value for studying the recent change history of the ice sheet. Numéro de notice : A2017-432 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.83.7.477 En ligne : https://doi.org/10.14358/PERS.83.7.477 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86336
in Photogrammetric Engineering & Remote Sensing, PERS > vol 83 n° 7 (July 2017) . - pp 477 - 491[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 105-2017071 SL Revue Centre de documentation Revues en salle Disponible A new method for automatic large scale map updating using mobile mapping imagery / Jianliang Ou in Photogrammetric record, vol 28 n° 143 (September - November 2013)
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Titre : A new method for automatic large scale map updating using mobile mapping imagery Type de document : Article/Communication Auteurs : Jianliang Ou, Auteur ; Gang Qiao, Auteur ; Feng Bao, Auteur ; et al., Auteur Année de publication : 2013 Article en page(s) : pp 240 - 260 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] acquisition de données
[Termes IGN] appariement de lignes
[Termes IGN] grande échelle
[Termes IGN] image terrestre
[Termes IGN] mise à jour cartographique
[Termes IGN] point de fuite
[Termes IGN] Ransac (algorithme)
[Termes IGN] séquence d'images
[Termes IGN] stéréoscopie
[Termes IGN] système de numérisation mobile
[Termes IGN] transformation de HoughRésumé : (Auteur) Land-based mobile mapping system (MMS) technology provides an innovative way to update geospatial information, characterised by rapid data collection and direct georeferencing. This paper presents a new method for automatically updating large scale maps using sequential MMS imagery. A major component of the technique is the extraction of vertical lines from such imagery through an improved Hough transform and vanishing point classification. These lines are stereomatched using an epipolar constraint and random sample consensus (RANSAC) strategy, with object space positions obtained by photogrammetric intersection. Buildings are recognised based on these vertical lines in conjunction with basic polygon templates, allowing maps to be updated. Numéro de notice : A2013-500 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/phor.12018 Date de publication en ligne : 26/04/2013 En ligne : https://doi.org/10.1111/phor.12018 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32638
in Photogrammetric record > vol 28 n° 143 (September - November 2013) . - pp 240 - 260[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-2013031 RAB Revue Centre de documentation En réserve 3L Disponible