Eigenfaces vs. Fisherfaces: Recognition Using Class Specific Linear Projection
IEEE Transactions on Pattern Analysis and Machine Intelligence
Face Recognition Using Evolutionary Pursuit
ECCV '98 Proceedings of the 5th European Conference on Computer Vision-Volume II - Volume II
Effective Implementation of Linear Discriminant Analysis for Face Recognition and Verification
CAIP '99 Proceedings of the 8th International Conference on Computer Analysis of Images and Patterns
Journal of Cognitive Neuroscience
A comparative study of automatic face verification algorithms on the BANCA database
AVBPA'03 Proceedings of the 4th international conference on Audio- and video-based biometric person authentication
The BANCA database and evaluation protocol
AVBPA'03 Proceedings of the 4th international conference on Audio- and video-based biometric person authentication
Face verification competition on the XM2VTS database
AVBPA'03 Proceedings of the 4th international conference on Audio- and video-based biometric person authentication
Face recognition using the nearest feature line method
IEEE Transactions on Neural Networks
Boosted manifold principal angles for image set-based recognition
Pattern Recognition
Discriminative Learning and Recognition of Image Set Classes Using Canonical Correlations
IEEE Transactions on Pattern Analysis and Machine Intelligence
Selection and Fusion of Similarity Measure Based Classifiers Using Support Vector Machines
SSPR & SPR '08 Proceedings of the 2008 Joint IAPR International Workshop on Structural, Syntactic, and Statistical Pattern Recognition
Confidence based gating of colour features for face authentication
MCS'07 Proceedings of the 7th international conference on Multiple classifier systems
Fusion of PCA-based and LDA-based similarity measures for face verification
EURASIP Journal on Advances in Signal Processing - Special issue on advanced image processing for defense and security applications
Confidence based gating of multiple face authentication experts
SSPR'06/SPR'06 Proceedings of the 2006 joint IAPR international conference on Structural, Syntactic, and Statistical Pattern Recognition
SVM-based selection of colour space experts for face authentication
ICB'07 Proceedings of the 2007 international conference on Advances in Biometrics
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We consider the problem of face authentication in the Linear Discriminant Analysis (LDA) space and investigate the effect of different scoring functions on the performance of the authentication system. First the theory of optimal metric for measuring the similarity between a pair of face images presented in [4] is extended to cope with general class specific covariance structures. The resulting gradient metric is experimentally compared with the commonly used normalised correlation and the original gradient metric. The merit of global and client specific thresholding is also investigated. The study is performed on the BANCA database [1] using internationally agreed experimental protocols. The results suggest that the novel metric is superior in scenarios where the quality of input face data is comparable to the quality of data used for determining the LDA space. In other cases, the weaker model deploying the isotropic covariance matrix in working out the gradient direction is preferable.