[1] W. Zhao, R. Chellappa, P. J. Phillips and A. Rosenfeld, "Face Recognition : A Literature Survey," ACM Computing Surveys, vol. 35, no. 4, pp. 399–458, 2003.
[2] Y. Kortli, M. Jridi, A. Al Falou and M. Atri, "Face Recognition Systems: A Survey," Sensors (Switzerland), vol. 20, no. 2, pp. 1–36, 2020.
[3] R. Jafri and H. Arabnia, "A Survey of Face Recognition Techniques," Journal of Information Processing Systems (JIPS), vol. 5, pp. 41–68, Jun. 2009.
[4] Z. Mortezaie and H. Hassanpour, "A Survey on Age Invariant Face Recognition Methods," Jordanian Journal of Computers and Information Technology (JJCIT), vol. 05, no. 02, pp. 87–96, 2019.
[5] A. Rao and S. Noushath, "Subspace Methods for Face Recognition," Computer Science Review, vol. 4, no. 1, pp. 1–17, 2010.
[6] P. N. Belhumeur, J. P. Hespanha and D. J. Kriegman, "Eigenfaces vs. Fisherfaces: Recognition Using Class Specific Linear Projection," IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 19, no. 7, pp. 711–720, Jul. 1997.
[7] M. üg. Çarıkçı and F. Özen, "A Face Recognition System Based on Eigenfaces Method," Procedia Technology, vol. 1, pp. 118–123, 2012.
[8] R. Kaur and E. Himanshi, "Face Recognition Using Principal Component Analysis," Proc. of the IEEE International Advance Computing Conference (IACC), Banglore, India, pp. 585–589, 2015.
[9] M. Slavkovic and D. Jevtic, "Face Recognition Using Eigenface Approach," Serbian Journal of Electrical Engineering, vol. 9, no. 1, pp. 121–130, 2012.
[10] J. Yang, D. Zhang, A. F. Frangi and J. Y. Yang, "Two-dimensional PCA: A New Approach to Appearance-based Face Representation and Recognition," IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 26, no. 1, pp. 131–137, 2004.
[11] H. Kong, L. Wang, E. K. Teoh, X. Li, J.-G. Wang and R. Venkateswarlu, "Generalized 2D Principal Component Analysis for Face Image Representation and Recognition," Neural Networks, vol. 18, no. 5, pp. 585–594, 2005.
[12] J. Yang and C. Liu, "Horizontal and Vertical 2DPCA-based Discriminant Analysis for Face Verification on a Large-scale Database," IEEE Transactions on Information Forensics and Security, vol. 2, no. 4, pp. 781–792, 2007.
[13] D. Zhang and Z.-H. Zhou, "(2D)2PCA: Two-directional Two-dimensional PCA for Efficient Face Representation and Recognition," Neurocomputing, vol. 69, no. 1, pp. 224–231, 2005.
[14] Y. Choi, T. Tokumoto, M. Lee and S. Ozawa, "Incremental Two-dimensional Two-directional Principal Component Analysis (I(2D)2PCA) for Face Recognition," Proc. of the IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), pp. 1493–1496, Prague, Czech Republic, 2011.
[15] A. Mashhoori and M. Z. Jahromi, "Block-wise Two-directional 2DPCA with Ensemble Learning for Face Recognition," Neurocomputing, vol. 108, pp. 111–117, 2013.
[16] W. Yang, C. Sun and K. Ricanek, "Sequential Row: Column 2DPCA for Face Recognition," Neural Computing & Applications, vol. 21, no. 7, pp. 1729–1735, Oct. 2012.
[17] X. Li, Y. Pang and Y. Yuan, "L1-Norm-based 2DPCA," IEEE Transactions on Systems, Man and Cybernetics, Part B (Cybernetics), vol. 40, no. 4, pp. 1170–1175, 2009.
[18] J. Wang, "Generalized 2-D Principal Component Analysis by Lp-Norm for Image Analysis," IEEE Transactions on Cybernetics, vol. 46, no. 3, pp. 792–803, 2016.
[19] Y. Wang and Q. Li, "Robust 2DPCA with F -Norm Minimization," IEEE Access, vol. 7, pp. 68083–68090, 2019.
[20] F. Zhang, J. Yang, J. Qian and Y. Xu, "Nuclear Norm-based 2-DPCA for Extracting Features from Images," IEEE Trans. on Neural Networks and Learning Systems, vol. 26, no. 10, pp. 2247–2260, 2015.
[21] Q. Gao, S. Xu, F. Chen, C. Ding, X. Gao and Y. Li, "R1-2-DPCA and Face Recognition," IEEE Transactions on Cybernetics, vol. 49, no. 4, pp. 1212–1223, 2019.
[22] Q. Gao, L. Ma, Y. Liu, X. Gao and F. Nie, "Angle 2DPCA : A New Formulation for 2DPCA," IEEE Transactions on Cybernetics, vol. 48, no. 5, pp. 1672–1678, 2018.
[23] C. Guzel Turhan and H. S. Bilge, "Class-wise Two-dimensional PCA Method for Face Recognition," IET Computer Vision, vol. 11, no. 4, pp. 286–300, 2016.
[24] F. Alsaqre, "Human Face Recognition Using Class-wise Two-dimensional Principal Component Analysis," Int. J. Comput. Digit. Syst. (IJCDS), vol. 9, no. 2, pp. 335–343, 2020.
[25] C. Gao, J. Zhou and Q. Pu, "Theory of Fractional Covariance Matrix and Its Applications in PCA and 2D-PCA," Expert Systems with Applications, vol. 40, no. 13, pp. 5395–5401, 2013.
[26] T. B. A. De Carvalho, M. A. A. Sibaldo, I. R. Tsang et al., "Fractional Eigenfaces," Proc. of the IEEE International Conference on Image Processising (ICIP 2014), no. 1, pp. 258–262, Paris, France, 2014.
[27] X. Yang, W. Wang, L. Liu, Y. Shao, L. Zhang and N. Deng, "Robust 2DPCA by Tℓ Criterion Maximization for Image Recognition," IEEE Access, vol. 9, pp. 7690–7700, 2021.
[28] J. Liu, S. Chen and X. Tan, "Fractional Order Singular Value Decomposition Representation for Face Recognition," Pattern Recognition, vol. 41, no. 1, pp. 378–395, 2008.
[29] T. H. Le, H. P. Truong, H. T. T. Do and D. M. Vo, "On Approaching 2D-FPCA Technique to Improve Image Representation in Frequency Domain," Proc. of the 4th Symposium on Information and Communication Technology (SoICT '13), pp. 172–180, DOI: 10.1145/2542050.2542061, 2013.
[30] A. Tharwat, "Principal Component Analysis: A Tutorial," International Journal of Applied Pattern Recognition, vol. 3, no. 3, p. 197, 2016.
[31] M. Turk and A. Pentland, "Eigenfaces for Recognition," Journal of Cognitive Neuroscience, vol. 3, no. 1, pp. 71–86, Jan. 1991.
[32] F. S. Samaria and A. C. Harter, "Parameterisation of a Stochastic Model for Human Face Identification," Proc. of the IEEE Workshop on Appl. of Computer Vision, 1994, pp. 138–142, Sarasota, FL, USA, 1994.
[33] Georgia Tech, "Georgia Tech Face Database," [Online], Available: http://www.anefian.com/research/face_reco.htm.