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Displaying 1-8 out of 8 total
The Multiscenario Multienvironment BioSecure Multimodal Database (BMDB)
Found in: IEEE Transactions on Pattern Analysis and Machine Intelligence
By Javier Ortega-Garcia, Julian Fierrez, Fernando Alonso-Fernandez, Javier Galbally, Manuel R. Freire, Joaquin Gonzalez-Rodriguez, Carmen Garcia-Mateo, Jose-Luis Alba-Castro, Elisardo Gonzalez-Agulla, Enrique Otero-Muras, Sonia Garcia-Salicetti, Lorene Allano
Issue Date:June 2010
pp. 1097-1111
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) i...
 
Evaluation of Brute-force Attack to Dynamic Signature Verification Using Synthetic Samples
Found in: Document Analysis and Recognition, International Conference on
By Javier Galbally, Julian Fierrez, Marcos Martinez-Diaz, Javier Ortega-Garcia
Issue Date:July 2009
pp. 131-135
A brute force attack using synthetically generated handwritten signatures is performed against a HMM-based signature recognition system. The generation algorithm of synthetic signatures is based on the spectral analysis of the trajectory functions and has ...
 
Improving the Enrollment in Dynamic Signature Verfication with Synthetic Samples
Found in: Document Analysis and Recognition, International Conference on
By Javier Galbally, Julian Fierrez, Marcos Martinez-Diaz, Javier Ortega-Garcia
Issue Date:July 2009
pp. 1295-1299
A novel scheme to generate multiple synthetic samples from a real on-line handwritten signature is proposed. The algorithm models a transmission channel which introduces a certain distortion into the real signature to produce the different synthetic sample...
 
Kinematical Analysis of Synthetic Dynamic Signatures Using the Sigma-Lognormal Model
Found in: Frontiers in Handwriting Recognition, International Conference on
By Javier Galbally, Julian Fierrez, Marcos Martinez-Diaz, Javier Ortega-Garcia, Réjean Plamondon, Christian O'Reilly
Issue Date:November 2010
pp. 113-118
The kinematical information present in synthetically generated signatures is analyzed using the Sigma-Lognormal model and compared to the kinematical properties of real samples. Experiments are carried out on totally independent development and test sets a...
 
Robustness of Signature Verification Systems to Imitators with Increasing Skills
Found in: Document Analysis and Recognition, International Conference on
By Fernando Alonso-Fernandez, Julian Fierrez, Almudena Gilperez, Javier Galbally, Javier Ortega-Garcia
Issue Date:July 2009
pp. 728-732
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, an...
 
Quality Measures in Biometric Systems
Found in: IEEE Security & Privacy
By Fernando Alonso-Fernandez,Julian Fierrez,Javier Ortega-Garcia
Issue Date:November 2012
pp. 52-62
Biometric technology has been increasingly deployed in the past decade, offering greater security and convenience than traditional methods of personal recognition. Although biometric signals' quality heavily affects a biometric system's performance, prior ...
 
Forensic Writer Identification Using Allographic Features
Found in: Frontiers in Handwriting Recognition, International Conference on
By Ruben Fernandez-de-Sevilla, Fernando Alonso-Fernandez, Julian Fierrez, Javier Ortega-Garcia
Issue Date:November 2010
pp. 308-313
Questioned document examination is extensively used by forensic specialists for criminal identification. This paper presents a writer recognition system based on allographic features operating in identification mode (one-to-many). It works at the level of ...
 
Towards a Better Understanding of the Performance of Latent Fingerprint Recognition in Realistic Forensic Conditions
Found in: Pattern Recognition, International Conference on
By Maria Puertas, Daniel Ramos, Julian Fierrez, Javier Ortega-Garcia, Nicomedes Exposito
Issue Date:August 2010
pp. 1638-1641
— This work studies the performance of a state-of-the-art fingerprint recognition technology, in several practical scenarios of interest in forensic casework. First, the differences in performance between manual and automatic minutiae extraction for latent...
 
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