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http://dx.doi.org/10.3807/KJOP.2003.14.4.383

Optical security system for protection of personal identification information  

윤종수 (에스케이테크)
도양회 (제주대학교 전기전자공학부, 첨단기술연구소)
Publication Information
Korean Journal of Optics and Photonics / v.14, no.4, 2003 , pp. 383-391 More about this Journal
Abstract
A new optical security system for the protection of personal identification information is proposed. Personal identification information consisting of a pure face image and an identification number is used for verification and authentication. Image encryption is performed by a fully phase image encryption technique with two random phase masks located in the input and the Fourier plane of 4-f correlator. The personal information, however, can be leaked out in the decryption process. To cope with this possibility, the encrypted image itself is used in the identification process. An encrypted personal identification number is discriminated and recognized by using the proposed MMACE_p (multiplexed MACE_p) filter, and then authenticity of the personal information is verified by correlation of the face image using the optical wavelet matched filter (OWMF). MMACE_p filter is a synthetic filter with four MACE_p (minimum average correlation energy_phase encrypted) filters multiplexed in one filter plane to recognize 10 different encrypted-numbers at a time. OWMF can improve discrimination capability and SNR (signal to noise ratio). Computer simulations confirmed that the proposed security technique can be applied to the protection of personal identification information.
Keywords
optical security; encryption; MACE filter; correlation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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