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Half-Face Dictionary Integration for Representation-Based Classification

Song, X, Feng, Z and Hu, G (2017) Half-Face Dictionary Integration for Representation-Based Classification IEEE Transactions on Cybernetics, 47 (1). pp. 142-152.

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This paper presents a half-face dictionary integration (HFDI) algorithm for representation-based classification. The proposed HFDI algorithm measures residuals between an input signal and the reconstructed one, using both the original and the synthesized dual-column (row) half-face training samples. More specifically, we first generate a set of virtual half-face samples for the purpose of training data augmentation. The aim is to obtain high-fidelity collaborative representation of a test sample. In this half-face integrated dictionary, each original training vector is replaced by an integrated dual-column (row) half-face matrix. Second, to reduce the redundancy between the original dictionary and the extended half-face dictionary, we propose an elimination strategy to gain the most robust training atoms. The last contribution of the proposed HFDI method is the use of a competitive fusion method weighting the reconstruction residuals from different dictionaries for robust face classification. Experimental results obtained from the Facial Recognition Technology, Aleix and Robert, Georgia Tech, ORL, and Carnegie Mellon University-pose, illumination and expression data sets demonstrate the effectiveness of the proposed method, especially in the case of the small sample size problem.

Item Type: Article
Subjects : Electronic Engineering
Divisions : Surrey research (other units)
Authors :
Song, X
Hu, G
Date : January 2017
DOI : 10.1109/TCYB.2015.2508645
Copyright Disclaimer : © 2015 IEEE
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:55
Last Modified : 25 Jan 2020 00:30

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