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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)
Of all the soft tissue sarcomas, those localised in the retroperitoneum represent a particular challenge to the surgeon. Diagnosis is often late, when the tumour has already reached considerable proportions, creating particular problems for its removal. Liposarcomas are the most common histological form of retroperitoneal tumour. The authors report the case(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)