NDLI: SAR image based geometrical feature extraction of ships

Content Provider	IEEE Xplore Digital Library
Author	Chongwen Duan Weidong Hu Xiaoyong Du
Copyright Year	2011
Description	Author affiliation: ATR Key Laboratory, National University of Defense Technology, Changsha, 410073, China (Chongwen Duan; Weidong Hu; Xiaoyong Du)
Abstract	Geometrical features are widely used in the SAR ship recognition. Two-dimensional (2D) features are sometimes ambiguous and the three-dimensional (3D) ones are hence preferred. Most of the existing researches are based on the 3D coordinate estimation of the scattering centers. These techniques may lose efficiency when working with ocean ships, due to their complicated motion on the waves and the scattering center scintillation among different views. In this work, the ship is simplified as an ellipsoid and the feature extraction problem are transformed into the size and aspect estimation of the ellipsoid. Considering that the projection of the ellipsoid on a SAR imaging plane is an ellipse, whose parameters can be estimated from the ship image, a regularized Least Square (LS) problem is constructed, with SAR images under known elevations and unknown azimuths. The solution of the problem gives the radar azimuth estimation. The 3D geometrical features, such as the size in each dimension, the Length-to-Width Ratio (LWR) and Length-to-Height Ratio (LHR), are evaluated in the end. Experiment with the electromagnetic (EM) simulated images shows the feasibility and efficiency of the ellipsoid approximation and the performances of the estimation are examined via Monte Carlo techniques.
Starting Page	2547
Ending Page	2550
File Size	267644
Page Count	4
File Format	PDF
ISBN	9781457710032
ISSN	21537003
e-ISBN	9781457710056
DOI	10.1109/IGARSS.2011.6049731
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-24
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Marine vehicles Ellipsoids Estimation Azimuth Three dimensional displays Scattering Approximation methods ellipsoid model SAR ship image three-dimensional geometrical feature azimuth estimation
Content Type	Text
Resource Type	Article

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