期刊
OPTICS COMMUNICATIONS
卷 343, 期 -, 页码 22-27出版社
ELSEVIER
DOI: 10.1016/j.optcom.2015.01.017
关键词
Optical correlation; Decision; PCE; Correlation plane; Robustness; Discrimination; Face recognition
类别
We report on a specific procedure in the correlation plane which allows us to make more robust and discriminating decision for face recognition applications. In this scheme, we multiply the correlation plane by a nonlinear function which is chosen to increase the correlation peak, reduce the autocorrelation noise, and increase the inter-correlation noise. In our work we present tests using a VanderLugt correlator (VLC) fabricated with different filters (phase-only filter (POF), composite POF) and we also discuss the efficiency of the protocol using peak-to-correlation-energy measures. Rewardingly, our technical results demonstrate that this method is remarkably efficient to increase both robustness and discrimination performances of a VLC. (C) 2015 Elsevier B.V. All rights reserved.
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