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Journal of Electronic Imaging

Determining building interior structures using compressive sensing
Author(s): Eva Lagunas; Moeness G. Amin; Fauzia Ahmad; Montse Najar
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Paper Abstract

We consider imaging of the building interior structures using compressive sensing (CS) with applications to through-the-wall imaging and urban sensing. We consider a monostatic synthetic aperture radar imaging system employing stepped frequency waveform. The proposed approach exploits prior information of building construction practices to form an appropriate sparse representation of the building interior layout. We devise a dictionary of possible wall locations, which is consistent with the fact that interior walls are typically parallel or perpendicular to the front wall. The dictionary accounts for the dominant normal angle reflections from exterior and interior walls for the monostatic imaging system. CS is applied to a reduced set of observations to recover the true positions of the walls. Additional information about interior walls can be obtained using a dictionary of possible corner reflectors, which is the response of the junction of two walls. Supporting results based on simulation and laboratory experiments are provided. It is shown that the proposed sparsifying basis outperforms the conventional through-the-wall CS model, the wavelet sparsifying basis, and the block sparse model for building interior layout detection.

Paper Details

Date Published: 22 January 2013
PDF: 15 pages
J. Electron. Imag. 22(2) 021003 doi: 10.1117/1.JEI.22.2.021003
Published in: Journal of Electronic Imaging Volume 22, Issue 2
Show Author Affiliations
Eva Lagunas, Univ. Politècnica de Catalunya (Spain)
Moeness G. Amin, Villanova Univ. (United States)
Fauzia Ahmad, Villanova Univ. (United States)
Montse Najar, Univ. Politècnica de Catalunya (Spain)

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