Article de revue avec comité de lecture (3)
ALLANO Lorène, DORIZZI Bernadette, GARCIA-SALICETTI Sonia
A new protocol for multi-biometric systems' evaluation maintaining the dependencies between biometric scores. Pattern recognition, january 2012, vol. 45, n° 1, pp. 119-127
abstract
We address the problem of measuring the dependency of multibiometric systems' scores, using Kolmogorov-Smirnov and Mutual Information criteria, and studying the validity of performance evaluation on chimeric persons. On the NIST-BSSR1 database, we formalize a common assumption in the literature: for independent scores, multibiometric systems can be evaluated on "random chimeric" persons. We show that this is not valid for dependent scores and propose a novel protocol for building "cluster-based chimeric" persons maintaining the level of dependency between scores. Finally, we show that performance evaluation for dependent modalities on such persons is equivalent to that obtained on "real" persons.
HOUMANI Nesma, MAYOUE Aurelien, GARCIA-SALICETTI Sonia, DORIZZI Bernadette, KHALIL Mostafa I., MOUSTAFA Mohamed N., ABBAS Hazem, MURAMATSU Daigo, YANIKOGLU Berrin, KHOLMATOV Alisher, MARTINEZ-DIAZ Marcos, FIERREZ Julian, ORTEGA-GARCIA Javier, ROURE ALCOBÉ Josep, FABREGAS Joan A., FAUNDEZ-ZANUY Marcos, PASCUAL-GASPAR Juan Manuel, CARDEÑOSO-PAYO Valentin, VIVARACHO-PASCUAL Carlos
BioSecure signature evaluation campaign (BSEC'2009) : evaluating online signature algorithms depending on the quality of signatures. Pattern recognition, march 2012, vol. 45, n° 3, pp. 993 -1003
abstract
In this paper, we present the main results of the BioSecure Signature Evaluation Campaign (BSEC'2009). The objective of BSEC'2009 was to evaluate different online signature algorithms on two tasks: the first one aims at studying the influence of acquisition conditions (digitizing tablet or PDA) on systems' performance; the second one aims at studying the impact of information content in signatures on systems' performance. In BSEC'2009, the two BioSecure Data Sets DS2 and DS3 are used for tests, both containing data of the same 382 people, acquired respectively on a digitizing tablet and on a PDA. The results of the 12 systems involved in this evaluation campaign are reported and analyzed in detail in this paper. Experimental results reveal a 2.2% EER for skilled forgeries and a 0.51% EER for random forgeries on DS2; and a 4.97% EER for skilled forgeries and a 0.55% EER for random forgeries on DS3.
HOUMANI Nesma, GARCIA-SALICETTI Sonia, DORIZZI Bernadette
On measuring forgery quality in online signatures. Pattern recognition, march 2012, vol. 45, n° 3, pp. 1004-1018
abstract
This work proposes a novel measure to quantify the quality of a skilled forgery sample in the online signature framework. Such a quality measure is constructed by adapting our former Personal Entropy to the context of skilled forgeries production. For validation, we confront our quality measure to several types of skilled forgeries (static, dynamic, professional) captured on different acquisition platforms. Indeed, four databases are exploited: MCYT-100, Philips database, BioSecure data subsets DS2 and DS3. We prove the effectiveness of our quality measure to quantify the quality of all types of skilled forgeries available with regards to the performance of three classifiers: a Dynamic Time Warping, a Hidden Markov models and a Gaussian Mixture Model.
Communication dans une conférence à comité de lecture (1)
MERGHEM Kamel, ROSALES Ricardo, AZOUIGUI Shéhérazade, ZOU Qin, MARTINEZ Anthony, ACCARD Alain, LELARGE François, RAMDANE Abderrahim
InAs/InP quantum dot based lasers and effect of optical feedback. OPTO SPIE Photonics West 2012 Conference : Novel In-Plane Semiconductor Lasers XI, SPIE, 23-26 january 2012, San Francisco, United States, 2012, vol. 8277
abstract
The effect of controlled optical feedback has been investigated for InAs/InP laser structures operating in the 1.55 µm fiber window. Mode locked lasers in particular show extremely small phase noise when subjected to optical feedback, implying a very low timing jitter which is of interest for many applications. Owing to growth optimisation, p-type doped directly modulated DFB lasers have also been shown to exhibit a robustness to optical feedback that complies with 10 Gb/s isolator free operation.
