1. Fusion of face recognition algorithms Università degli Studi di Cagliari Dipartimento di Ingegneria Elettrica ed Elettronica Pattern Recognition and Applications group

2. Limits in using individual face authentication systems Genuine user Enhanced Fisher Linear Discriminant algorithm Acceptance threshold at EER: 78.82 Multiple KL algorithm Acceptance threshold at EER: 49.54 Non Linear KL algorithm Acceptance threshold at EER: 55.13 Score 81.51 52.73 51.66 Accepted Wrongly Rejected

3. Limits in using individual face authentication systems Score 79.06 31.28 52.08 Wrongly Accepted Rejected Impostor access trial as: Enhanced Fisher Linear Discriminant algorithm Acceptance threshold at EER: 78.82 Multiple KL algorithm Acceptance threshold at EER: 49.54 Non Linear KL algorithm Acceptance threshold at EER: 55.13

4. Limits in using individual face authentication systems Score 92.77 44.38 99.29 Accepted Wrongly Rejected Genuine user Enhanced Fisher Linear Discriminant algorithm Acceptance threshold at EER: 78.82 Multiple KL algorithm Acceptance threshold at EER: 49.54 Non Linear KL algorithm Acceptance threshold at EER: 55.13

5. Limits in using individual face authentication systems Score 79.69 17.27 55.15 Wrongly Accepted Rejected Impostor access trial as: Wrongly Accepted Enhanced Fisher Linear Discriminant algorithm Acceptance threshold at EER: 78.82 Multiple KL algorithm Acceptance threshold at EER: 49.54 Non Linear KL algorithm Acceptance threshold at EER: 55.13

6. Advantages in combining multiple face authentication systems Genuine user Enhanced Fisher Linear Discriminant algorithm Score: 81.51 Accepted Multiple KL algorithm Score: 52.73 Accepted Non Linear KL algorithm Score: 51.66 Wrongly rejected 87.02 Accepted FUSION by the product of the individual Scores Acceptance threshold at EER: 81.67 Final Score

7. Advantages in combining multiple face authentication systems 65.14 REJECTED Enhanced Fisher Linear Discriminant algorithm Score: 79.06 Wrongly accepted Multiple KL algorithm Score: 31.28 Rejected Non Linear KL algorithm Score: 52.08 Rejected Impostor access trial as: FUSION by the product of the individual Scores Acceptance threshold at EER: 81.67 Final Score

8. Advantages in combining multiple face authentication systems 99.29 Accepted Genuine user Enhanced Fisher Linear Discriminant algorithm Score: 92.77 Accepted Mulitple KL algorithm Score: 44.38 Wrongly rejected Non Linear KL algorithm Score: 99.29 Accepted FUSION by the product of the individual Scores Acceptance threshold at EER: 81.67 Final Score

9. Advantages in combining multiple face authentication systems FUSION by the product of the individual Scores Acceptance threshold at EER: 81.67 50.19 REJECTED Enhanced Fisher Linear Discriminant algorithm Score: 79.69 Wrongly accepted Multiple KL algorithm Score: 17.27 Rejected Non Linear KL algorithm Score: 55.15 Wrongly accepted Impostor access trial as: Final Score