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Fingerprint recognition systems are vulnerable to artificial spoof fingerprint attacks, like molds made of silicone, gelatin or Play-Doh. " Liveness detection " , which is to detect vitality information from the biometric signature itself, has been proposed to defeat these kinds of spoof attacks. The goal for the LivDet 2009 competition is to compare(More)
Although fingerprint verification systems reached a high degree of accuracy, it has been recently shown that they can be circumvented by " fake fingers " , namely, fingerprint images coming from stamps reproducing an user fingerprint, which is processed as an " alive " one. Several methods have been proposed for facing with this problem, but the issue is(More)
The automatic vitality detection of a fingerprint has become an important issue in personal verification systems based on this biometric. It has been shown that fake fingerprints made using materials like gelatine or silicon can deceive commonly used sensors. Recently, the extraction of vitality features from fingerprint images has been proposed to address(More)
The vitality detection of fingerprints is currently acknowledged as a serious issue for personal identity verification systems. This problem, raised some years ago, is related to the fact that the 3d shape pattern of a fingerprint can be reproduced using artificial materials. An image quite similar to that of true, alive, fingerprint, is derived if such "(More)
We present results from a detailed simulation of InAs quantum dots embedded in an AlGaAs/GaAs heterostructure with a self-consistent three-dimensional solver of the Poisson–Schrödinger equation based on density functional theory and local density approximation. Single-electron effects in the structure are evaluated by computing the electrochemical potential(More)
AbsTRACT In this chapter, the authors describe the software module developed in the context of a joint research work between the Department of Electrical and Electronic Engineering of the University of Cagliari, and Raggruppamento Carabinieri Investigazioni Scientifiche (Scientific Investigation Office) of the " Arma dei Carabinieri " , that is the militia(More)
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