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Towards new applications of underwater photogrammetry for investigating coral reef morphology and habitat complexity in the Myeik Archipelago, Myanmar / Martina Anelli in Geocarto international, vol 34 n° 5 ([01/05/2019])  

Public [article]  inGeocarto international > vol 34 n° 5 [01/05/2019] . - pp 459 - 472 Titre : Towards new applications of underwater photogrammetry for investigating coral reef morphology and habitat complexity in the Myeik Archipelago, Myanmar Type de document : Article/Communication Auteurs : Martina Anelli, Auteur ; Tommaso Julitta, Auteur ; Luca Fallati, Auteur ; et al., Auteur Année de publication : 2019 Article en page(s) : pp 459 - 472 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques [Termes IGN] Birmanie [Termes IGN] modèle numérique de terrain [Termes IGN] photogrammétrie sous-marine [Termes IGN] photographie sous-marine [Termes IGN] récif corallien [Termes IGN] relief sous-marin Résumé : (Auteur) Photogrammetry represents a non-destructive, cost-effective tool for coral reef monitoring, able to integrate traditional remote sensing techniques and support researchers’ work. However, its application to submerged habitats is still in early stage. We present new ways to employ Structure from Motion techniques to infer properties of reef habitats. In particular, we propose the use of Digital Surface Models and Digital Terrain Models for assessing coral colonies extension and height and discriminating between seabed and coral cover. Such information can be coupled with digital rugosity estimates to improve habitat characterization. DTM, DSM and orthophotos were derived and used to compute a series of metrics like coral morphologies, reef topography, coral cover and structural complexity. We show the potentialities offered by underwater photogrammetry and derived products to provide useful basic information for marine habitat mapping, opening the possibility to extend these methods for large-scale assessment and monitoring of coral reefs. Numéro de notice : A2019-452 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106049.2017.1408703 Date de publication en ligne : 14/12/2017 En ligne : https://doi.org/10.1080/10106049.2017.1408703 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92840 [article]

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