Fingerprint verification by fusion of optical and capacitive sensors

A few works have been presented so far on information fusion for fingerprint verification. None, however, have explicitly investigated the use of multi-sensor fusion, in other words, the integration of the information provided by multiple devices to capture fingerprint images. In this paper, a multi-sensor fingerprint verification system based on the fusion of optical and capacitive sensors is presented. Reported results show that such a multi-sensor system can perform better than traditional fingerprint matchers based on a single sensor. (C) 2004 Elsevier B.V. All rights reserved

Alessandro, Annibale e Scipione: un capitolo della fortuna di Luciano di Samosata in Russia

«Разговор в царстве мертвых между Александром Великим, Ганнибалом и Сципионом» (разговор 12), принадлежащий перу Лукиана Самосатского, был трижды переведен в России в XVIII веке: Михаилом Ломоносовым в 1747г., неизвестным переводчиком с латыни в 1773 г. и Иваном Сидоровским с греческого в 1775 г. Автор настоящего исследования уделяет особое внимание переводу Ломоносова в попытке найти ответы на следующие вопросы: 1) почему Ломоносов избрал для перевода именно этот разговор; 2) с какого источника был выполнен перевод; 3) какое влияние он оказал на последующие переводы. В статье анализируются причины особой популярности двенадцатого разговора в Европе и прослеживается история его переложений и переводов с латыни и греческого. Сличение текстов доказывает, что источником перевода Ломоносова, который оказал значительное влияние на перевод 1773 года, является французская версия Никола Перро д’Абланкура.Il dialogo nel regno dei morti tra Alessandro Magno, Annibale e Scipione, dodicesimo dei trenta composti da Luciano di Samosata, è tradotto tre volte nella Russia del XVIII secolo: nel 1747 da Michail Lomonosov, nel 1773 da un traduttore anonimo (dal latino), e nel 1775 da Ivan Sidorovskij (dal greco). L’autrice di questo scritto si sofferma in particolare sulla traduzione di Lomonosov per cercare risposta ai seguenti interrogativi: perché la scelta di Lomonosov cade proprio su questo dialogo? da quale testo è condotta la sua traduzione? che influenza ha avuto sulle traduzioni successive? A tal fine l’articolo ricostruisce la particolare fortuna europea del Dialogo XII, la storia dei rifacimenti e delle traduzioni eseguite dal latino e dal greco, per giungere quindi a identificare l’originale di Lomonosov nella versione francese di Nicolas Perrot d’Ablancourt.Lucian’s Dialogue of the Dead between Alexander the Great, Hannibal and Scipio (Dialogue XII) was translated three times in 18th-century Russia: the first by Mikhail Lomonosov in 1747; the second by an anonymous translator from the Latin in 1773; and the third by Ivan Sidorovski from the Greek in 1775. This article focuses on Lomonosov’s translation in a bid to find answers to the following questions: why exactly Lomonosov chose this dialogue; which source text he used for his translation; and how his work influenced future translations. In seeking these answers, the article analyzes the reasons for the Europe-wide success of Dialogue XII and retraces the history of its reworkings/adaptations and translations from the Latin and the Greek. It concludes by establishing that the source text for Lomonosov’s translation, which would heavily influence the anonymous translator from the Latin, was the well-known French version by Nicolas Perrot d’Ablancourt

Photometry of the comet 2060 Chiron

The comet 2060 Chiron has proven to be an interesting and enigmatic object. Situated between the orbits of Saturn and Uranus, it was originally classified as the most distant asteroid. It began to show cometary behavior in 1987 by increasing a full magnitude in brightness and developing a coma; there is evidence also for similar earlier outbursts. A thorough study of Chiron is important for two reasons: (1) it is a transition object defining the relationship between comets, asteroids, and meteorites; and (2) a full description of its changes in brightness - particularly on time scale of hours - will provide an empirical foundation for understanding the physical mechanisms (including outgassing, sublimation of volatiles, and even significant mass ejections) driving the evolution of comets. Short term outbursts were observed in early 1989, and a rapid decrease in brightness of Chiron's coma was observed in 1990 in the V and R filters. Also, a rotational lightcurve was detected of the nucleus with an amplitude only 1/4 that observed in its quiescent state: this fact indicates the increased importance of the optically thin coma to the observed brightness

CCD photometry of 2060 Chiron, 1991 January

Observations of 2060 Chiron was performed on 7 to 8 Jan. 1991 with the Mt. Palomar 1.52 m telescope in the Gunn-R passband. On-chip field stars were used to perform differential reductions. The repeatability of the 5.9 hour light curve was excellent, both within a night and from night to night. No evidence for short-term secular variations similar to those seen last year by both Luu and Jewitt (1990) and Buratti and Dunbar (1991) is seen in the new light curve. Chiron's rotational light curve appears strikingly similar to that obtained a year earlier by Luu and Jewitt (1990), both in amplitude and shape. Both light curves show strongly correlated changes over a timescale of perhaps 15 minutes. These same features were marginally visible in the 1986 light curve. Such behavior is believed to be evidence that Chiron may be more aspherical than the 4 percent intensity variation might otherwise indicate, and favors a viewing geometry where the subearth latitude is rather low. Chiron was much fainter in 1985, when a partial light curve was obtained by Marcialis. Due to the lower sampling rate of these early data, no conclusions can be made regarding the high-frequency light curve structure back then. All three of these light curves differ significantly from that obtained by Buratti and Dunbar (1991), one week before the observations of Luu and Jewitt. The Chiron field was calibrated using Landolt standards on Ut 15 Mar. 1991. A mean R-magnitude of 15.6 + or - 0.1 was found. Variability of 2060 Chiron was demonstrated over timescales of minutes, hours, and years. An intense campaign was urged to monitor the photometric behavior of Chiron throughout the 1990s

Webrogue: meet web people

WebRogue is an application for virtual presence over the Web. It is implemented by coupling a Web client and a Chat client, so that each time the user downloads a Web page he or she can see who is connected to that site and chat with them. Users can decide to talk in couples, or simply speak loud, so that anyone that is watching that page can listen, or even scream so that everybody on the web-site can listen. Additionally two or more users can decide to form a group and surf together, one of them being the leader, that the others will follow. Whenever the leader changes URL, the page loaded on the browsers of anybody else in the group will change accordingly. The goal of WebRogue is to enable the birth of online communities around web-sites of interest, allowing exchange of opinions, in a free, non moderated manner, between site visitors and site owners, and thus it is designed with freedom of speech in mind. Nobody can moderate a WebRogue channel, no subscription or authentication is required, and the service doesnt rely on any particular application to be installed server-side in web-sites, for them to become meeting points for WebRogue users.267-27

Eiha?!?: XML per l'organizzazione di URL con distribuzione multimodale

La crescita esponenziale di risorse presenti in rete ed il largo sviluppo di strumenti per l'accesso multimodale ad internet fanno sorgere nuovi problemi di gestione dell'informazione quali la ricerca di contenuti e la formattazione dei contenitori. In questo contesto ed all'interno del progetto europeo Vision abbiamo costruito un manuale telematico interattivo della cultura e del territorio della Sardegna. Questa raccolta di dati e stata progettata anche come piattaforma di sperimentazione di nuove tecnologie quali l'XML e le sue applicazioni. Il risultato ottenuto e un servizio multimodale, denominato Eiha?!?, fruibile attraverso PC, cellulari e PDA

LivDet 2017 Fingerprint Liveness Detection Competition 2017

Fingerprint Presentation Attack Detection (FPAD) deals with distinguishing images coming from artificial replicas of the fingerprint characteristic, made up of materials like silicone, gelatine or latex, and images coming from alive fingerprints. Images are captured by modern scanners, typically relying on solid-state or optical technologies. Since from 2009, the Fingerprint Liveness Detection Competition (LivDet) aims to assess the performance of the state-of-the-art algorithms according to a rigorous experimental protocol and, at the same time, a simple overview of the basic achievements. The competition is open to all academics research centers and all companies that work in this field. The positive, increasing trend of the participants number, which supports the success of this initiative, is confirmed even this year: 17 algorithms were submitted to the competition, with a larger involvement of companies and academies. This means that the topic is relevant for both sides, and points out that a lot of work must be done in terms of fundamental and applied research.Comment: presented at ICB 201