Automated identification of geomorphological and topographical features of the seabed by object based image analysis of digital terrain models

Quaternary geomorphology in tectonically active areas with emphasis in fluvio-coastal processes

Auteur(s) et Affiliation(s)

Remote Sensing Lab., School of Rural and Surveying Engineering, National Technical Univ., Athènes, Grece

Description :
The aim of this study was to assess whether a successful Oriented or Object Based Image Analysis (OBIA) is feasible in the characterization of bedforms using a Digital Terrain Model (DTM) and certain of its derivatives toward fully automating seabed classification. A DTM of the seabed in the area of Rio Antirio in the Gulf of Corinth, Greece, was created through processing multibeam echo sounder data. First objects were created through multiresolution segmentation of the DTM. Then the classes of geomorphological features were initially defined and were successively refined through the multiresolution analysis procedure. The final classes were smooth ground, channels, scars, mounds, ridges and landslide scars. Subsequently each object was assigned to one of the classes representing those bedforms by fuzzy classification. Finally, a visual qualitative evaluation of the results was performed.

Type de document :
Article de monographie

Source :
Zeitschrift für Geomorphologie, issn : 0372-8854, 2013, vol. 57, n°. 3, Suppl., p. 63-74, nombre de pages : 12, Références bibliographiques : 15 ref.

Date :

Editeur :
Pays édition : Allemagne, Stuttgart, Gebruder Borntraeger

Langue :
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)