| 1. |
- Alonso-Fernandez, Fernando, et al.
(författare)
-
On-line signature verification using Tablet PC
- 2005
-
Ingår i: Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis. - Zagreb : University of Zagreb. - 9789531840897 - 953184089X ; , s. 245-250
-
Konferensbidrag (refereegranskat)abstract
- On-line signature verification for Tablet PC devices is studied. The on-line signature verification algorithm presented by the authors at the First International Signature Verification Competition (SVC 2004) is adapted to work in Tablet PC environments. An example prototype of securing access and securing document application using this Tablet PC system is also reported. Two different commercial Tablet PCs are evaluated, including information of interest for signature verification systems such as sampling and pressure statistics. Authentication performance experiments are reported considering both random and skilled forgeries by using a new database with over 3000 signatures.
|
|
| 2. |
|
|
| 3. |
- Alonso-Fernandez, Fernando, et al.
(författare)
-
Robustness of signature verification systems to imitators with increasing skills
- 2009
-
Ingår i: ICDAR '09. - Los Alamitos, Calif. : IEEE Computer Society. - 9780769537252
-
Konferensbidrag (refereegranskat)abstract
- In this paper, we study the impact of an incremental level of skill in the forgeries against signature verification systems. Experiments are carried out using both off-line systems, involving the discrimination of signatures written on a piece of paper, and on-line systems, in which dynamic information of the signing process (such as velocity and acceleration) is also available. We use for our experiments the BiosecurID database, which contains both on-line and off-line versions of signatures, acquired in four sessions across a 4 month time span with incremental level of skill in the forgeries for different sessions. We compare several scenarios with different size and variability of the enrolment set, showing that the problem of skilled forgeries can be alleviated as we consider more signatures for enrolment. © 2009 IEEE.
|
|
| 4. |
- Alonso-Fernandez, Fernando, et al.
(författare)
-
Secure access system using signature verification over Tablet PC
- 2007
-
Ingår i: IEEE Aerospace and Electronic Systems Magazine. - Piscataway, N.J. : IEEE Press. - 0885-8985 .- 1557-959X. ; 22:4, s. 3-8
-
Tidskriftsartikel (refereegranskat)abstract
- Low-cost portable devices capable of capturing signature signals are being increasingly used. Additionally, the social and legal acceptance of the written signature for authentication purposes is opening a range of new applications. We describe a highly versatile and scalable prototype for Web-based secure access using signature verification. The proposed architecture can be easily extended to work with different kinds of sensors and large-scale databases. Several remarks are also given on security and privacy of network-based signature verification. © 2007 IEEE.
|
|
| 5. |
- Alonso-Fernandez, Fernando, et al.
(författare)
-
Sensor Interoperability and Fusion in Fingerprint Verification : A Case Study Using Minutiae- and Ridge-based Matchers
- 2006
-
Ingår i: 2006 9th International Conference on Control, Automation, Robotics and Vision, Vols 1- 5. - Piscataway, N.J. : IEEE Press. - 9781424403424 ; , s. 422-427
-
Konferensbidrag (refereegranskat)abstract
- Information fusion in fingerprint recognition has been studied in several papers. However, only a few papers have been focused on sensor interoperability and sensor fusion. In this paper, these two topics are studied using a multisensor database acquired with three different fingerprint sensors. Authentication experiments using minutiae and ridge-based matchers are reported. Results show that the performance drops dramatically when matching images from different sensors. We have also observed that fusing scores from different sensors results in better performance than fusing different instances from the same sensor. © 2006 IEEE.
|
|
| 6. |
- Alonso-Fernandez, Fernando, et al.
(författare)
-
Sensor interoperability and fusion in signature verification : a case study using Tablet PC
- 2005
-
Ingår i: Advances in biometric person authentification. - New York : Springer-Verlag New York. - 9783540294313 ; , s. 180-187
-
Konferensbidrag (refereegranskat)abstract
- Several works related to information fusion for signature verification have been presented. However, few works have focused on sensor fusion and sensor interoperability. In this paper, these two topics are evaluated for signature verification using two different commercial Tablet PCs. An enrolment strategy using signatures from the two Tablet PCs is also proposed. Authentication performance experiments are reported by using a database with over 3000 signatures. © Springer-Verlag Berlin Heidelberg 2005.
|
|
| 7. |
- Bigun, Josef, et al.
(författare)
-
Combining Biometric Evidence for Person Authentication
- 2005
-
Ingår i: Advanced Studies in Biometrics. - Berlin : Springer Berlin/Heidelberg. - 9783540262046 - 9783540286387 ; , s. 1-18
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Humans are excellent experts in person recognition and yet they do not perform excessively well in recognizing others only based on one modality such as single facial image. Experimental evidence of this fact is reported concluding that even human authentication relies on multimodal signal analysis. The elements of automatic multimodal authentication along with system models are then presented. These include the machine experts as well as machine supervisors. In particular, fingerprint and speech based systems will serve as illustration. A signal adaptive supervisor based on the input biometric signal quality is evaluated.
|
|
| 8. |
- Fierrez-Aguilar, J., et al.
(författare)
-
On the effects of image quality degradation on minutiae- and ridge-based automatic fingerprint recognition
- 2005
-
Ingår i: Proceedings. - Piscataway, N.J. : IEEE Press. - 9780780392458 ; , s. 79-82
-
Konferensbidrag (refereegranskat)abstract
- The effect of image quality degradation on the verification performance of automatic fingerprint recognition is investigated. We study the performance of two fingerprint matchers based on minutiae and ridge information under varying fingerprint image quality. The ridge-based system is found to be more robust to image quality degradation than the minutiae-based system for a number of different image quality criteria. © 2005 IEEE.
|
|
| 9. |
- Galbally-Herrero, J., et al.
(författare)
-
On the vulnerability of fingerprint verification systems to fake fingerprint attacks
- 2006
-
Ingår i: Proceedings. - Piscataway, N.J. : IEEE Press. - 9781424401741 ; , s. 130-136
-
Konferensbidrag (refereegranskat)abstract
- A new method to generate gummy fingers is presented. A medium-size fake fingerprint database is described and two different fingerprint verification systems are evaluated on it. Three different scenarios are considered in the experiments, namely: enrollment and test with real fingerprints, enrollment and test with fake fingerprints, and enrollment with real fingerprints and test with fake fingerprints. Results for an optical and a thermal sweeping sensors are given. Both systems are shown to be vulnerable to direct attacks. © 2006 IEEE.
|
|
| 10. |
- Galbally, J., et al.
(författare)
-
Fingerprint Liveness Detection Based on Quality Measures
- 2009
-
Ingår i: 2009 1st IEEE International Conference on Biometrics, Identity and Security, BIdS 2009. - Piscataway, N.J. : IEEE Press. - 9781424452767 ; , s. 1-8
-
Konferensbidrag (refereegranskat)abstract
- A new fingerprint parameterization for liveness detection based on quality measures is presented. The novel feature set is used in a complete liveness detection system and tested on the development set of the LivDET competition, comprising over 4,500 real and fake images acquired with three ditTerent optical sensors. The proposed solution proves to be robust to the multi-sensor scenario, and presents an overall rate of 93% of correctly classified samples. Furthermore, the liveness detection method presented has the added advantage over previously studied techniques of needing just one image from a finger to decide whether it is real or fake.
|
|
