| 1. |
- Alonso-Fernandez, Fernando, et al.
(författare)
-
Quality-Based Conditional Processing in Multi-Biometrics : Application to Sensor Interoperability
- 2010
-
Ingår i: IEEE transactions on systems, man and cybernetics. Part A. Systems and humans. - Piscataway, NJ, USA : IEEE Press. - 1083-4427 .- 1558-2426. ; 40:6, s. 1168-1179
-
Tidskriftsartikel (refereegranskat)abstract
- As biometric technology is increasingly deployed, it will be common to replace parts of operational systems with newer designs. The cost and inconvenience of reacquiring enrolled users when a new vendor solution is incorporated makes this approach difficult and many applications will require to deal with information from different sources regularly. These interoperability problems can dramatically affect the performance of biometric systems and thus, they need to be overcome. Here, we describe and evaluate the ATVS-UAM fusion approach submitted to the quality-based evaluation of the 2007 BioSecure Multimodal Evaluation Campaign, whose aim was to compare fusion algorithms when biometric signals were generated using several biometric devices in mismatched conditions. Quality measures from the raw biometric data are available to allow system adjustment to changing quality conditions due to device changes. This system adjustment is referred to as quality-based conditional processing. The proposed fusion approach is based on linear logistic regression, in which fused scores tend to be log-likelihood-ratios. This allows the easy and efficient combination of matching scores from different devices assuming low dependence among modalities. In our system, quality information is used to switch between different system modules depending on the data source (the sensor in our case) and to reject channels with low quality data during the fusion. We compare our fusion approach to a set of rule-based fusion schemes over normalized scores. Results show that the proposed approach outperforms all the rule-based fusion schemes. We also show that with the quality-based channel rejection scheme, an overall improvement of 25% in the equal error rate is obtained. © 2010 IEEE.
|
|
| 2. |
- Alonso-Fernandez, Fernando, 1978-, et al.
(författare)
-
Quality Measures in Biometric Systems
- 2012
-
Ingår i: IEEE Security and Privacy. - New York, NY : IEEE Computer Society. - 1540-7993 .- 1558-4046. ; 10:6, s. 52-62
-
Tidskriftsartikel (refereegranskat)abstract
- Biometric technology has been increasingly deployed in the last decade, offering greater security and convenience than traditional methods of personal recognition. But although the performance of biometric systems is heavily affected by the quality of biometric signals, prior work on quality evaluation is limited. Quality assessment is a critical issue in the security arena, especially in challenging scenarios (e.g. surveillance cameras, forensics, portable devices or remote access through Internet). Different questions regarding the factors influencing biometric quality and how to overcome them, or the incorporation of quality measures in the context of biometric systems have to be analyzed first. In this paper, a review of the state-of-the-art in these matters is provided, giving an overall framework of the main factors related to the challenges associated with biometric quality.
|
|
| 3. |
- Fierrez, Julian, et al.
(författare)
-
BiosecurID : A Multimodal Biometric Database
- 2010
-
Ingår i: Pattern Analysis and Applications. - New York, USA : Springer-Verlag New York. - 1433-7541 .- 1433-755X. ; 13:2, s. 235-246
-
Tidskriftsartikel (refereegranskat)abstract
- A new multimodal biometric database, acquired in the framework of the BiosecurID project, is presented together with the description of the acquisition setup and protocol. The database includes eight unimodal biometric traits, namely: speech, iris, face (still images, videos of talking faces), handwritten signature and handwritten text (on-line dynamic signals, off-line scanned images), fingerprints (acquired with two different sensors), hand (palmprint, contour-geometry) and keystroking. The database comprises 400 subjects and presents features such as: realistic acquisition scenario, balanced gender and population distributions, availability of information about particular demographic groups (age, gender, handedness), acquisition of replay attacks for speech and keystroking, skilled forgeries for signatures, and compatibility with other existing databases. All these characteristics make it very useful in research and development of unimodal and multimodal biometric systems. © Springer-Verlag London Limited 2009.
|
|
| 4. |
- Galbally, Javier, et al.
(författare)
-
A High Performance Fingerprint Liveness Detection Method Based on Quality Related Features
- 2012
-
Ingår i: Future generations computer systems. - Amsterdam : Elsevier. - 0167-739X .- 1872-7115. ; 28:1, s. 311-321
-
Tidskriftsartikel (refereegranskat)abstract
- A new software-based liveness detection approach using a novel fingerprint parameterization based on quality related features is proposed. The system is tested on a highly challenging database comprising over 10,500 real and fake images acquired with five sensors of different technologies and covering a wide range of direct attack scenarios in terms of materials and procedures followed to generate the gummy fingers. The proposed solution proves to be robust to the multi-scenario dataset, and presents an overall rate of 90% 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. This last characteristic provides the method with very valuable features as it makes it less intrusive, more user friendly, faster and reduces its implementation costs. © 2010 Elsevier B.V. All rights reserved.
|
|
| 5. |
- Galbally, Javier, et al.
(författare)
-
Evaluation of Direct Attacks to Fingerprint Verification Systems
- 2011
-
Ingår i: Telecommunications Systems. - New York : Springer-Verlag New York. - 1018-4864 .- 1572-9451. ; 47:3, s. 243-254
-
Tidskriftsartikel (refereegranskat)abstract
- The vulnerabilities of fingerprint-based recognition systems to direct attacks with and without the cooperation of the user are studied. Two different systems, one minutiae-based and one ridge feature-based, are evaluated on a database of real and fake fingerprints. Based on the fingerprint images quality and on the results achieved on different operational scenarios, we obtain a number of statistically significant observations regarding the robustness of the systems. © 2010 Springer Science+Business Media, LLC.
|
|
| 6. |
- Krish, Ram P., et al.
(författare)
-
Partial Fingerprint Registration for Forensics using Minutiae-generated Orientation Fields
- 2014
-
Ingår i: 2nd International Workshop on Biometrics and Forensics (IWBF2014). - Piscataway, NJ : IEEE Press. - 9781479943708
-
Konferensbidrag (refereegranskat)abstract
- Minutia based matching scheme is the most widely accepted method for both automated as well as manual (forensic) fingerprint matching. The scenario of comparing a partial fingerprint minutia set against a full fingerprint minutia set is a challenging problem. In this work, we propose a method to register the orientation field of the partial fingerprint minutia set to that of the orientation field of full fingerprint minutia set. As a consequence of registering the partial fingerprint orientation field, we obtain extra information that can augment a minutia based matcher by reducing the search space of minutiae in the full fingerprint. We present the accuracy of our registration algorithm on NIST-SD27 database, reporting separately for both subjective and quantitative quality classification of NIST-SD27. The registration performance accuracy is measured in terms of percentage of ground truth minutiae present in the reduced minutiae search space generated by our algorithm. ©2014 IEEE.
|
|
| 7. |
- Krish, Ram P., et al.
(författare)
-
Pre-registration for Improved Latent Fingerprint Identification
- 2014
-
Ingår i: 2014 22nd International Conference on Pattern Recognition (ICPR). - Los Alamitos : IEEE Computer Society. - 9781479952083 ; , s. 696-701
-
Konferensbidrag (refereegranskat)abstract
- Comparing a latent fingerprint minutiae set against a ten print fingerprint minutiae set using an automated fingerprint identification system is a challenging problem. This is mainly because latent fingerprints obtained from crime scenes are mostly partial fingerprints, and most automated systems expect approximately the same number of minutiae between query and the reference fingerprint under comparison for good performance. In this work, we propose a methodology to reduce the minutiae set of ten print with respect to that of query latent minutiae set by registering the orientation field of latent fingerprint with the ten print orientation field. By reducing the search space of minutiae from the ten print, we can improve the performance of automated identification systems for latent fingerprints. We report the performance of our registration algorithm on the NIST-SD27 database as well as the improvement in the Rank Identification accuracy of a standard minutiae-based automated system. © 2014 IEEE.
|
|
| 8. |
- Ortega-Garcia, Javier, et al.
(författare)
-
The Multiscenario Multienvironment BioSecure Multimodal Database (BMDB)
- 2010
-
Ingår i: IEEE Transactions on Pattern Analysis and Machine Intelligence. - Piscataway, N.J. : IEEE Press. - 0162-8828 .- 1939-3539. ; 32:6, s. 1097-1111
-
Tidskriftsartikel (refereegranskat)abstract
- A new multimodal biometric database designed and acquired within the framework of the European BioSecure Network of Excellence is presented. It is comprised of more than 600 individuals acquired simultaneously in three scenarios: 1) over the Internet, 2) in an office environment with desktop PC, and 3) in indoor/outdoor environments with mobile portable hardware. The three scenarios include a common part of audio/video data. Also, signature and fingerprint data have been acquired both with desktop PC and mobile portable hardware. Additionally, hand and iris data were acquired in the second scenario using desktop PC. Acquisition has been conducted by 11 European institutions. Additional features of the BioSecure Multimodal Database (BMDB) are: two acquisition sessions, several sensors in certain modalities, balanced gender and age distributions, multimodal realistic scenarios with simple and quick tasks per modality, cross-European diversity, availability of demographic data, and compatibility with other multimodal databases. The novel acquisition conditions of the BMDB allow us to perform new challenging research and evaluation of either monomodal or multimodal biometric systems, as in the recent BioSecure Multimodal Evaluation campaign. A description of this campaign including baseline results of individual modalities from the new database is also given. The database is expected to be available for research purposes through the BioSecure Association during 2008. © 2010 IEEE.
|
|
