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Weighted sparse representation for human ear recognition based on local descriptor

[+] Author Affiliations
Guermoui Mawloud, Melaab Djamel

University of Batna, Faculty of Engineering, Department of Electronics, Rue Chahid Mohamed El Hadi Boukhlouf, Batna 05000, Algeria

J. Electron. Imaging. 25(1), 013036 (Feb 26, 2016). doi:10.1117/1.JEI.25.1.013036
History: Received October 6, 2015; Accepted January 21, 2016
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Abstract.  A two-stage ear recognition framework is presented where two local descriptors and a sparse representation algorithm are combined. In a first stage, the algorithm proceeds by deducing a subset of the closest training neighbors to the test ear sample. The selection is based on the K-nearest neighbors classifier in the pattern of oriented edge magnitude feature space. In a second phase, the co-occurrence of adjacent local binary pattern features are extracted from the preselected subset and combined to form a dictionary. Afterward, sparse representation classifier is employed on the developed dictionary in order to infer the closest element to the test sample. Thus, by splitting up the ear image into a number of segments and applying the described recognition routine on each of them, the algorithm finalizes by attributing a final class label based on majority voting over the individual labels pointed out by each segment. Experimental results demonstrate the effectiveness as well as the robustness of the proposed scheme over leading state-of-the-art methods. Especially when the ear image is occluded, the proposed algorithm exhibits a great robustness and reaches the recognition performances outlined in the state of the art.

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Topics

Ear ; Databases

Citation

Guermoui Mawloud and Melaab Djamel
"Weighted sparse representation for human ear recognition based on local descriptor", J. Electron. Imaging. 25(1), 013036 (Feb 26, 2016). ; http://dx.doi.org/10.1117/1.JEI.25.1.013036


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