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Robust 2D Ear Registration and Recognition Based on SIFT Point Matching

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2 Author(s)
Bustard, J.D. ; Dept. of Electron. & Comput. Sci., Univ. of Southampton, Southampton ; Nixon, M.S.

Significant recent progress has shown ear recognition to be a viable biometric. Good recognition rates have been demonstrated under controlled conditions, using manual registration or with specialised equipment. This paper describes a new technique which improves the robustness of ear registration and recognition, addressing issues of pose variation, background clutter and occlusion. By treating the ear as a planar surface and creating a homography transform using SIFT feature matches, ears can be registered accurately. The feature matches reduce the gallery size and enable a precise ranking using a simple 2D distance algorithm. When applied to the XM2VTS database it gives results comparable to PCA with manual registration. Further analysis on more challenging datasets demonstrates the technique to be robust to background clutter, viewing angles up to plusmn13 degrees and with over 20% occlusion.

Published in:

Biometrics: Theory, Applications and Systems, 2008. BTAS 2008. 2nd IEEE International Conference on

Date of Conference:

Sept. 29 2008-Oct. 1 2008