4.7 Article

RBECA: A regularized Bi-partitioned entropy component analysis for human face recognition

期刊

EXPERT SYSTEMS WITH APPLICATIONS
卷 202, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eswa.2022.117273

关键词

Face recognition; Regularized entropy space; Golden search minimization; Noise stabilization; Kernel feature space; Multi-scale CNN

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This paper presents a novel approach for Human Face Recognition, which regularizes the kernel entropy components and makes the method robust to noise. The method divides the kernel feature space into two partitions and uses a Golden Search minimization function to eliminate the null space. The proposed method achieves high recognition accuracy and outperforms other well-known methods in benchmark databases.
This paper presents a novel approach for Human Face Recognition, namely Regularized Bi-partitioned Entropy Component Analysis (RBECA). This conservative approach regularizes the kernel entropy components by deterring the noise and affecting the lower entropy regions area, making the method robust to noise. The kernel feature space, formed by the kernel entropy component analysis (KECA), is divided into two partitions: the High Entropy Space (HES) and the Low Entropy Space (LES). The noise-laden low entropy spectrum is regularized by predicting entropy values obtained from the information-filled High Entropy Spectrum. The corresponding projection vectors are adjusted accordingly. A null space, comprising the negligible information and many dimensions, is eliminated using a Golden Search minimization function at two stages. The method retains the maximum entropy property and high recognition accuracy while using the optimum number of features. This resultant feature vector is classified using the cosine similarity measure. The algorithm is successfully tested on several benchmark databases like AR, FERET, FRAV2D, and LFW, using standard protocols and compared with other competitive methods. The proposed method achieves much better recognition accuracy than other well-known methods like PCA, ICA, KPCA, KECA, LGBP, ERE, etc., in all considered cases. Moreover, we have also proposed a CNN for the comparative analysis. For unbiased or fair performance evaluation, the sensitivity and specificity are also reported.

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