Palmprint identification using an ensemble of sparse representations
Author | Rida, Imad |
Author | Al-Maadeed, Somaya |
Author | Mahmood, Arif |
Author | Bouridane, Ahmed |
Author | Bakshi, Sambit |
Available date | 2020-08-20T08:06:21Z |
Publication Date | 2017 |
Publication Name | IEEE Access |
Resource | Scopus |
ISSN | 21693536 |
Abstract | Among various palmprint identification methods proposed in the literature, sparse representation for classification (SRC) is very attractive offering high accuracy. Although SRC has good discriminative ability, its performance strongly depends on the quality of the training data. In particular, SRC suffers from two major problems: lack of training samples per class and large intra-class variations. In fact, palmprint images not only contain identity information but they also have other information, such as illumination and geometrical distortions due to the unconstrained conditions and the movement of the hand. In this case, the sparse representation assumption may not hold well in the original space since samples from different classes may be considered from the same class. This paper aims to enhance palmprint identification performance through SRC by proposing a simple yet efficient method based on an ensemble of sparse representations through an ensemble of discriminative dictionaries satisfying SRC assumption. The ensemble learning has the advantage to reduce the sensitivity due to the limited size of the training data and is performed based on random subspace sampling over 2D-PCA space while keeping the image inherent structure and information. In order to obtain discriminative dictionaries satisfying SRC assumption, a new space is learned by minimizing and maximizing the intra-class and inter-class variations using 2D-LDA. Extensive experiments are conducted on two publicly available palmprint data sets: multispectral and PolyU. Obtained results showed very promising results compared with both state-of-the-art holistic and coding methods. Besides these findings, we provide an empirical analysis of the parameters involved in the proposed technique to guide the neophyte. 2018 IEEE. |
Sponsor | This work was supported by the National Priority Research Program from the Qatar National Research Fund under Grant 6-249-1-053. The contents of this publication are solely the responsibility of the authors and do not necessarily represent the official views of the Qatar National Research Fund or Qatar University. |
Language | en |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Subject | Biometrics ensemble learning palmprint sparse representation |
Type | Article |
Pagination | 3241-3248 |
Volume Number | 6 |
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