Circuits, Systems, and Signal Processing

, Volume 38, Issue 4, pp 1684–1694 | Cite as

Mixed Nonorthogonal Transforms Representation for Face Recognition

  • Taif AlobaidiEmail author
  • Wasfy B. Mikhael


An alternative face recognition system that additively combines two-dimensional discrete wavelet transform (2D-DWT) coefficients and two-dimensional discrete cosine transform (2D-DCT) coefficients for image feature extraction is proposed. Each training pose is represented by superimposing the dominant coefficients from the two domains taking into account the nonorthogonality of the coefficients in one domain with respect to the coefficients in the other domain. The recognition system is tested with three publicly available databases, namely ORL, YALE, and FERET. As shown in the sample results, the proposed system significantly reduces the required storage size, a desirable property for big data and when computing resources are limited, while maintaining the accuracy of recognition rates when compared with the 2D-DCT, the 2D-DWT, and the successive 2D-DWT/2D-DCT techniques. In addition, the computational complexity in the testing phase is comparable with that of recently reported techniques.


Mixed transforms Discrete cosine transform Discrete wavelet transform Face recognition 



The authors acknowledge the University of Central Florida Advanced Research Computing Center for providing computational resources that contributed to results reported herein. URL: Also, the authors would like to thank Mr. André Beckus for his valuable comments.


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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Electrical and Computer EngineeringUniversity of Central FloridaOrlandoUSA

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