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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Biometric encryption system for increased security

Jayapal, Ranjith 01 January 2017 (has links)
Security is very important in present day life. In this highly-interconnected world, most of our daily activities are computer based, and the data transactions are protected by passwords. These passwords identify various entities such as bank accounts, mobile phones, etc. People might reuse the same password, or passwords related to an individual that can lead to attacks. Indeed, remembering several passwords can become a tedious task. Biometrics is a science that measures an individual’s physical characteristics in a unique way. Thus, biometrics serves as a method to replace the cumbersome use of complex passwords. Our research uses the features of biometrics to efficiently implement a biometric encryption system with a high level of security.
12

Fingerprint Growth Prediction, Image Preprocessing and Multi-level Judgment Aggregation / Fingerabdruckswachstumvorhersage, Bildvorverarbeitung und Multi-level Judgment Aggregation

Gottschlich, Carsten 26 April 2010 (has links)
No description available.
13

Fingerprint Image Quality Assessment / Fingerprint Image Quality Assessment

Šmida, Vladimír January 2011 (has links)
Kritickým prvkem biometrického systému pro rozpoznávání otisků prstů je proces snímání. Kvalita snímku totiž ovlivňuje všechny další části systému počínaje zpracováním obrazu, přes extrakci rysů až po samotné rozhodnutí. Přestože bylo navrženo několik metod určování kvality snímku, chybějící formální specifikace kvality otisku nedovoluje ověřit jejich přesnost. Tato diplomová práce se zabývá hodnocením metod určujících kvalitu biometrického signálu otisku prstu. Popisuje jednotlivé faktory ovlivňující kvalitu spolu se současnými přístupy používanými pro její odhad. V práci je rovněž vysvětlena evaluační technika navržená za účelem porovnání schopnosti jednotlivých metod předpovědět výkon biometrického systému. Několik metod pro odhad kvality bylo implementováno a ohodnoceno touto technikou.
14

Fourier and Variational Based Approaches for Fingerprint Segmentation

Hoang Thai, Duy 28 January 2015 (has links)
No description available.
15

從生物辨識應用探討隱私權之保護 / The privacy protection issues of biometric application

游璿樺, Yu, Hsuan Hua Unknown Date (has links)
自從美國911恐怖攻擊事件後,生物辨識技術受到世界各國重視,使得生物辨識應用大鳴大放,涵蓋範圍非常廣泛,從國家的入出境管理、國民身分證,到公司或住家的門禁管理、安全監控,乃至於個人身分確認,如電腦開機登錄、隨身碟資料加密。然而生物辨識應用,會涉及個人生物特徵之蒐集與相關個人資料之運用,一方面為生活上帶來便利,另一面也無聲無息為個人隱私帶來衝擊與威脅。本文從生物辨識技術之研究,藉由分析指紋辨識、臉型辨識及DNA辨識之應用所引發的隱私權問題,以及相關法令規範之探討,最後從法制面、政策面與執行面上提供建議,希望藉由完備的法令規範,評估各種應用可能引發之隱私爭議,建立完善的管理制度與監督機制,將生物辨識應用之隱私侵害與疑慮降到最低,得以享受生物辨識應用所帶來的安全性與方便性。
16

Fehler von Fingerabdruckerkennungssystemen im Kontext / Begreifbare Vermittlung der Fehler einer biometrischen Kontrolltechnologie

Knaut, Andrea 12 September 2017 (has links)
In dieser Arbeit werden zwei Fragen im Zusammenhang mit Fehlern von Fingerabdruckerkennungssystemen untersucht. Erstens: Welche strukturellen Merkmale und begrifflichen Implikationen hat der spezifische Fehlerdiskurs in diesem Teilgebiet der Biometrie? Zur Beantwortung dieser Frage werden im Rahmen einer diskursanalytischen Betrachtung der Fachtexte des Forschungsfeldes die gängigen Fehlertypologien der Biometrie untersucht. Die Arbeitshypothese der Analyse ist, dass der massenhafte Einsatz von Fingerabdruckerkennungssystemen im Alltag trotz aller ihrer Fehler diskursiv durchsetzungsfähig ist. Undzwar nicht unbedingt, weil die Fehler zu vernachlässigen sind, sondern weil die Angst vor „Identitätsbetrug“, die Idee einer Messbarkeit von Identität und die wirtschaftliche und politische Bedeutung von Sicherheitstechniken in einer für unsicher gehaltenen Welt große Wirkmächtigkeit haben. Es wird diskutiert, inwiefern die Auseinandersetzung mit System- und Überwindungsfehlern in der Informatik zu kurz greift. Daher wird ein erweitertes Fehlermodell vorgeschlagen, das an jüngere transdisziplinäre Fehlerforschung anknüpft und als kritisches Analyseinstrument für die Beurteilung der Wechselwirkung zwischen Informatik(-system) und Gesellschaft genutzt werden kann. Zweitens: Wie lassen sich die diskursanalytische Methode und ein experimentelles Hands-On-Lernen zu einem Lern- und Lehrkonzept verbinden, dass eine kritische Vermittlung der Probleme von Fingerabdruckerkennungssystemen ermöglicht? Ausgehend von schulischen Unterrichtskonzepten einer an der Lebenswelt orientierten Informatiklehre sowie der Idee des „be-greifbaren Lernens“ an konkreten Gegenständen wurde ein Lern- und Lehrkonzept für Universität und Schule entwickelt und in drei verschiedenen Institutionen ausprobiert. / In this paper two questions will be addressed relating to deficits in fingerprint recognition systems. Firstly, what structural features and conceptual implications does the analysis of errors have in the field of biometrics? To answer this question, the common error types in biometrics will be examined, as part of an analytical discourse taking into consideration technical texts from the research field. The working hypothesis of this analysis is that the structure of the discourse surrounding fingerprint recognition systems would present no barriers to their widespread implementation in everyday life despite all their faults – not because their shortcomings are negligible but due to the great potency of the fear of “identity fraud”, the notion that identity can be measured, and the economic and political importance of security technologies in a world deemed unsafe. It will be discussed how the examination of system errors and spoofing attacks in computer science falls short in addressing the whole picture of failing fingerprint recognition systems. Therefore an extended error model will be proposed, one which builds on recent transdisciplinary error research and which can be used as a critical tool for analysing and assessing the interaction between computer systems and society. Secondly, how could the analytical discourse method and experimental hands-on learning be combined into a teaching concept that would enable critical teaching of the problems of fingerprint recognition systems? Starting from the school-based teaching concepts of a theory of computer science based on real life and the idea of “hands-on learning” using concrete objects, a teaching concept for universities and schools has been developed and tested in three different institutions.
17

Analysis of Fingerprint Recognition Performance on Infants

Samuel J Reiff (9183044) 29 July 2020 (has links)
<p>In this study, any change in fingerprint performance, image quality and minutiae count for infants in three different age groups was evaluated (0-6, 7-12, and >12 months). This was done to determine whether there is a difference in performance between infant age groups for a fingerprint recognition system.</p> <p>The purpose of this research was to determine whether there is a difference in infant fingerprint performance and image quality metrics, between three different age groups (0-6, 7-12, and >12 months old), using the same optical sensor? The data used for this secondary analysis was collected as part of a longitudinal multimodal infant study, using the Digital Persona U.are.U 4500. DET curves, zoo analysis, and image quality metrics were used to evaluate performance and quality factored by infant age group.</p><p>This study found that there was a difference in image quality and minutiae count, genuine and impostor match scores, and performance error rates (EER) between the three age groups. Therefore, quality and performance were dependent on age. While there was a difference in performance between age groups, there was generally stability for subjects who overlapped between multiple age groups. Difference in performance was most likely due to the difference in physical characteristics between subjects in each age group, rather than individual instability. The results showed that it could potentially be feasible to use fingerprint recognition for children over the age of 12 months.</p>

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