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The Photogrammetric record, v.30 no.151, 2015년, pp.263 - 278
Li, Na , Huang, Xianfeng , Zhang, Fan , Li, Deren
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AbstractImage registration is a prerequisite for multisource data fusion. In this paper the problem of registering aerial images with lidar point clouds in desert areas is addressed. Compared with urban areas, registration in desert regions is difficult due to the lack of man‐made features whi...
RésuméLe recalage d'images est un préalable à la fusion de données multisource. Cet article aborde le problème du recalage entre des images aériennes et des nuages de points lidar en région désertique. Le recalage est plus difficile dans les déserts qu'en milieu urbain en raison de la rareté des objets artificiels que les méthodes traditionnelles ont coutume d'utiliser. Cependant les crêtes de sable peuvent servir de primitives pour le recalage. On extrait d'abord l'information de ces crêtes de sable à la fois dans l'image aérienne et dans le nuage de points lidar. L'approche ICP (recherche itérative du point le plus proche) est ensuite étendue à un algorithme «？perspective‐ICP？» utilisant une transformation perspective et capable de recaler les données entre elles à partir de l'appariement des crêtes de sable. Les cas atypiques sont pris en compte par l'adoption d'une stratégie de pondération adaptative. Une expérimentation a été menée avec des données sur Dunhuang dans le désert de Gobi (Chine), et les résultats montrent que la méthode conduit à un recalage efficace et fiable en région désertique.
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