ESA Earth Home Missions Data Products Resources Applications
    22-Jul-2014
EO Data Access
How to Apply
How to Access
FRINGE '96 Workshop: ERS SAR Interferometry, 30 September - 2 October 1996
Services
Site Map
Frequently asked questions
Glossary
Credits
Terms of use
Contact us
Search


 
 
 

FRINGE 96

Linear feature extraction from ERS SAR scenes using INSAR coherence maps

Olaf Hellwich Technical University Munich, Chair for Photogrammetry and Remote Sensing, 80290 Munich, Germany
olaf@photo.verm.tu-muenchen.de
http://www.photo.verm.tu-muenchen.de/staff/olaf

Abstract

A Bayesian approach to the extraction of linear features from SAR scenes is proposed. The SAR data evaluated are the intensity and the coherence from interferometric processing. Both are analysed using a rotating template. The results are combined in the likelihood function of Bayes' theorem. Prior knowledge about the continuity of thin curvilinear structures is formulated as a Markov random field. The object parameters are determined by an approximate maximum a posteriori estimate using simulated annealing or by local highest confidence first estimation.
Keywords: line extraction, Markov random fields, SAR, coherence data

Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry