Assessment of DEM derived from very high-resolution stereo satellite imagery for geomorphometric analysis

Very high-resolution satellite stereo images play an important role in cartographical and geomorphological applications, provided that all the processing steps follow strict procedures and the result of each step is carefully assessed. We outline a general process for assessing a reliable analysis o...

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Bibliographic Details
Published in:European journal of remote sensing 2017-01, Vol.50 (1), p.534-549
Main Authors: Barbarella, Maurizio, Fiani, Margherita, Zollo, Cesarino
Format: Article
Language:English
Subjects:
Cartography
DEM/DTM
Digital Elevation Models
Feature extraction
Feature maps
GeoEye-1
Geomorphology
georeferencing
High resolution
Image resolution
Landslides
Landslides & mudslides
Remote sensing
Satellite imagery
Very high-resolution satellite images
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Summary:Very high-resolution satellite stereo images play an important role in cartographical and geomorphological applications, provided that all the processing steps follow strict procedures and the result of each step is carefully assessed. We outline a general process for assessing a reliable analysis of terrain morphometry starting from a GeoEye-1 stereo-pair acquired on an area with different morphological features. The key steps were critically analyzed to evaluate the uncertainty of the results. A number of maps of morphometric features were extracted from the digital elevation models in order to characterize a landslide; on the basis of the contour line and feature maps, we were able to accurately delimit the boundaries of the various landslide bodies.
ISSN:2279-7254
2279-7254
DOI:10.1080/22797254.2017.1372084