Mr. Ryan M. Steinbach Profile

Ryan M. Steinbach

at Sandia National Labs

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Proceedings Article | 21 May 2015 Paper

Building detection in SAR imagery

Ryan Steinbach, Mark Koch, Mary Moya, Jeremy Goold

Proceedings Volume 9461, 94610E (2015) https://doi.org/10.1117/12.2177037

KEYWORDS: Synthetic aperture radar, Image processing, Interferometric synthetic aperture radar, Receivers, Reflectors, Image fusion, Radar, Data acquisition, Data processing, Defense and security

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Current techniques for building detection in Synthetic Aperture Radar (SAR) imagery can be computationally expensive and/or enforce stringent requirements for data acquisition. We present a technique that is effective and efficient at determining an approximate building location from multi-pass single-pol SAR imagery. This approximate location provides focus-of-attention to specific image regions for subsequent processing. The proposed technique assumes that for the desired image, a preprocessing algorithm has detected and labeled bright lines and shadows. Because we observe that buildings produce bright lines and shadows with predetermined relationships, our algorithm uses a graph clustering technique to find groups of bright lines and shadows that create a building. The nodes of the graph represent bright line and shadow regions, while the arcs represent the relationships between the bright lines and shadow. Constraints based on angle of depression and the relationship between connected bright lines and shadows are applied to remove unrelated arcs. Once the related bright lines and shadows are grouped, their locations are combined to provide an approximate building location. Experimental results are presented to demonstrate the outcome of this technique.

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