Automatic Generation of a SPOT DEM: Towards Coastal Disaster Monitoring KCI OTHER

Title
Automatic Generation of a SPOT DEM: Towards Coastal Disaster Monitoring
Author(s)
김승범; 강석구
Publication Year
2001-06
Abstract
A DEM(digital elevation model) is generated from a SPOT panchromatic stereo-pair using automated algorithms over a 8 km × 10 km region around Mokpo city. The aims are to continue the accuracy assessment over diverse conditions and to examine the applicability of a SPOT DEM for coastal disaster monitoring. The accuracy is assessed with respect to three reference data sets: 10 global positioning system records, 19 leveling data, and 1:50,000 topography map. The planimetric error is 10.6m r.m.s. and the elevation erroer ranges from 12.4m to 14.4m r.m.s.. The DEM accuracy of the flat Mokpo region is consistent with that over a mountainous area, which supports the robustness of the algorithms. It was found that coordinate transformation errors are significant at a few meters when using the data from leveling and topographic maps. The error budget is greater than the requirements for coastal disaster monitoring. Exploiting that a sub-scene is used, the affine transformation improves the accuracy by 50% during the camera modeling.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5883
Bibliographic Citation
대한원격탐사학회지, v.17, no.2, pp.121 - 129, 2001
Keywords
digital elevation model; SPOT; error reduction; disaster monitoring
Type
Article
Language
English
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse