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Novel Techniques for Built-Up Area Extraction from Polarimetric SAR Images

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posted on 24.06.2020 by D Ratha, P Gamba, A Bhattacharya, Alejandro Frery
© 2004-2012 IEEE. Built-up (BU) area extraction from remote sensing images is important to monitor and manage urbanization and industrialization. In this letter, we propose two BU area extraction techniques based on the analysis of fully polarimetric synthetic aperture radar (PolSAR) data. Both methods exploit the geodesic distance on the unit sphere in the space of Kennaugh matrices. The first method is based on the three dominant scattering types in the scene and compares them with scattering models; if any of them matches with BU type elementary scattering models, then the pixel is said to belong to a BU area. The second method is based on a novel PolSAR BU index (RBUI) composed by considering scattering mechanisms from BU structures. The two proposed techniques are validated on two different urban scenes, one acquired at C-band by RADARSAT-2 and other at L-band by ALOS-2 SAR sensors.

History

Preferred citation

(2020). Novel Techniques for Built-Up Area Extraction from Polarimetric SAR Images. IEEE Geoscience and Remote Sensing Letters, 17(1), 177-181. https://doi.org/10.1109/LGRS.2019.2914913

Journal title

IEEE Geoscience and Remote Sensing Letters

Volume

17

Issue

1

Publication date

01/01/2020

Pagination

177-181

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Publication status

Published

ISSN

1545-598X

eISSN

1558-0571

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