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Analysis of Gable-Roofed Building Signature in Multiaspect InSAR Data

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4 Author(s)
Thiele, A. ; FGAN-FOM Res. Inst. for Optronics & Pattern Recognition, Ettlingen, Germany ; Cadario, E. ; Schulz, K. ; Soergel, U.

The spatial resolution of state-of-the-art synthetic aperture radar sensors enables the structure analysis of urban areas. The appearance of buildings in magnitude images in settlements is dominated by the effects of the inherent oblique scene illumination. In urban residential districts, salient pairs of parallel lines of bright magnitude are often caused by direct reflection and double-bounce signal at gable-roofed buildings. In this letter, the magnitude and interferometric phase signature of gable-roofed buildings are discussed to extract reliable building features for reconstruction. The analysis contains signature changes by varying illumination and building geometry. The presented approach is aiming at the reconstruction of gable-roofed buildings by a knowledge-based analysis considering the discussed effects. The reconstruction results are assessed by using a high-resolution LIDAR surface model as ground truth.

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Geoscience and Remote Sensing Letters, IEEE  (Volume:7 ,  Issue: 1 )