Comments on “On Image Matrix Based Feature Extraction Algorithms”

Authors:
Quanxue Gao;Lei Zhang;D. Zhang;Jian Yang
Affiliations:
Xidian Univ., Xi'an;-;-;-
Venue:
IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics
Year:
2007

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Abstract

A class of image-matrix-based feature extraction algorithms has been discussed earlier. The correspondence argues that 2D principal component analysis and Fisher linear discriminant (FLD) are equivalent to block-based PCA and FLD. In this correspondence, we point out that this statement is not rigorous.