Landslide detection and monitoring using remote sensing and spatial analysis in Taiwan

Fuan Tsai, Tang Huang Lin, Liang Chien Chen, Walter W. Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

This paper presents a systematic approach to utilize multi-temporal remote sensing images and spatial analysis for the detection, investigation, and long-term monitoring of landslide hazards in Taiwan. Rigorous orthorectification of satellite images are achieved by correction of sensor orbits and backward projections with ground control points of digital elevation models. Individual images are also radiometrically corrected according to sensor calibration factors. In addition, multi-temporal images are further normalized based on pseudo-invariant features identified from the images. Probable landslides are automatically detected with a change-detection procedure that combines NDVI filtering and Change-Vector Analysis. A spatial analysis system is also developed to further edit and analyze detected landslides and to produce landslide maps and other helpful outputs such as field-investigation forms and statistical reports. The developed landslide detection and monitoring system was applied to a study of large-scale landslide mapping and analysis in southern Taiwan and to the long-term monitoring of landslides in the watershed of Shimen Reservoir in northern Taiwan. Both application examples indicate that the proposed approach is viable. It can detect landslides effectively and with high accuracy. The data produced with the developed spatial analysis system are also helpful for hazard investigation, reconstruction, and mitigation.

Original languageEnglish
Title of host publicationEarth Resources and Environmental Remote Sensing/GIS Applications II
DOIs
StatePublished - 2011
EventEarth Resources and Environmental Remote Sensing/GIS Applications II - Prague, Czech Republic
Duration: 20 Sep 201122 Sep 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8181
ISSN (Print)0277-786X

Conference

ConferenceEarth Resources and Environmental Remote Sensing/GIS Applications II
Country/TerritoryCzech Republic
CityPrague
Period20/09/1122/09/11

Keywords

  • hazard mitigation
  • Landslide
  • multi-temporal change detection
  • spatial analysis

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