TY - GEN
T1 - Utilizing multi-temporal aerial images for land subsidence detection
AU - Lin, Hsiao Yun
AU - Iam, Chi Hang
AU - Tseng, Yi-Hsing
PY - 2009/12/1
Y1 - 2009/12/1
N2 - Land subsidence may lead to riverine or coastal floods and decline bearing capacity of soil. Precise leveling surveys and monitoring well settings are the common methods for land subsidence monitoring. However these surveying methods are point based observations which are hard to show regional elevation changes. This study is intent to obtain regional elevation changes by using multi-temporal aerial images. Combined with GPS and previous elevation surveying data, the exterior orientation of the images were solved the bundle adjustment of aerial triangulation. In order to reduce the effects of buildings, vegetations and other ground objects, a filter was applied to obtain DEMs, which are suitable to derive the elevation changes in this region. Historical regional elevation changes can be derived by using multi-temporal DEMs obtained from the aerial images acquired in past.
AB - Land subsidence may lead to riverine or coastal floods and decline bearing capacity of soil. Precise leveling surveys and monitoring well settings are the common methods for land subsidence monitoring. However these surveying methods are point based observations which are hard to show regional elevation changes. This study is intent to obtain regional elevation changes by using multi-temporal aerial images. Combined with GPS and previous elevation surveying data, the exterior orientation of the images were solved the bundle adjustment of aerial triangulation. In order to reduce the effects of buildings, vegetations and other ground objects, a filter was applied to obtain DEMs, which are suitable to derive the elevation changes in this region. Historical regional elevation changes can be derived by using multi-temporal DEMs obtained from the aerial images acquired in past.
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M3 - Conference contribution
AN - SCOPUS:84866100313
SN - 9781615679843
T3 - 30th Asian Conference on Remote Sensing 2009, ACRS 2009
SP - 1704
EP - 1709
BT - 30th Asian Conference on Remote Sensing 2009, ACRS 2009
T2 - 30th Asian Conference on Remote Sensing 2009, ACRS 2009
Y2 - 18 October 2009 through 23 October 2009
ER -