2013
- S.Nikitidis, A.Tefas and I.Pitas, "Maximum Margin Discriminant Projections for Facial Expression Recognition", 21st European Signal Processing Conference (EUSIPCO 2013), September 9-13, 2013.
2011
- S.Nikitidis, A.Tefas and I.Pitas, "Recent Advances in Discriminant Non-negative Matrix Factorization", Proc. First Asian Conference on Pattern Recognition (ACPR2011), November 28-30, 2011.
- S.Nikitidis, A.Tefas, N.Nikolaidis and I.Pitas, "Facial Expression Recognition Using Clustering Discriminant Non-negative Matrix Factorization", IEEE International Conference in Image Processing (ICIP 2011), September 11-14, 2011.
- S.Nikitidis, A.Tefas and I.Pitas, "Using Subclasses in Discriminant Non-negative Subspace Learning for Facial Expression Recognition", Proc. 19th European Signal Processing Conference (EUSIPCO 2011),, August 29 – September 2, 2011.
2010
- S.Nikitidis, N.Nikolaidis and I.Pitas, "Incremental Training of Multiclass Support Vector Machines", International Conference on Pattern Recognition (ICPR 2010), August 23-26, 2010.
2008
- S.Nikitidis, S.Zafeiriou and I.Pitas, "Camera Motion Estimation Using Particle Filters", Proc. of 3rd International Conference on Computer Vision Theory and Applications (VISAPP 2008), January, 2008.
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