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    <ns1:title language="sr">Primena multimodalne biometrije u sistemima za utvrđivanje identiteta</ns1:title>
    <ns2:subtitle language="sr">doktorska disertacija</ns2:subtitle>
    <ns2:alt_title language="en">Applying multimodal biometrics in identity determing systems</ns2:alt_title>
    <ns1:language>sr</ns1:language>
    <ns1:description language="sr">U svetu čije su odrednice globalna ekonomija, Internet, česta i snažna migracija ljudi, regionalna politička nestabilnost i ukorenjen organizovan kriminal, pitanje svakodnevnog utvrđivanja identiteta ljudi u navedenim kontekstima je od ključnog značaja za bezbednost i efikasno funkcionisanje svakog društva. U važnim društvenim aktivnostima, na primer na polju bezbednosti, zdravstva ili finansija, tačnost zaključaka nekih unimodalnih biometrijskih sistema postaje problematična, jer pojedinačni propusti mogu da izazovu nesagledivu štetu pojedincu ili zajednici. Smanjenje neizvesnosti se traži u istovremenom kombinovanju više biometrijskih modaliteta, odnosno u multimodalnoj biometriji. Izvedena istraživanja su imala za cilj da doprinesu boljem sagledavanju mogućnosti i ograničenja primene multimodalnih biometrijskih sistema u postupcima identifikacije lica, kao neophodnog preduslova za uspostavljanje sistema menadžmenta identitetom. Sprovedeno je analitičko i eksperimentalno istraživanje u naučnom, organizacionom, tehničkom, tehnološkom, pravnom i finansijskom domenu, kako bi se izveli odgovarajući konkretni zaključci, zapažanja i preporuke potrebni za procenu mogućnosti primene multimodalnih biometrijskih sistema u sistemima identifikacije. Studija slučaja je korišćena kao najprikladniji metodološki okvir za proveru postavljenih hipoteza u oblasti primene multimodalne biometrije u procesu utvrđivanja identiteta. U studiji slučaja su istraživane mogućnosti i ograničenja rada biometrijskog sistema sa dva često korišćena biometrijska modaliteta, otiskom prsta i slikom lica. Nakon tako postavljenog problema, u radu je izložena i potom praktično primenjena metodologija za rešavanja problema koji se javljaju u sistemima multimodalne biometrije. Izložene su specifičnosti dve korišćene biometrijske baze podataka. Opisan je i eksperimentalan, ispitni multimodalni sistem za utvrđivanje identiteta sa datom specifikacijom arhitekture, odabranim režimima rada, kao i navođenjem
postupka ispitivanja performansi ovog sistema. Završni deo rada je posvećen analizi i interpretaciji dobijenih rezultata radi određivanja, kako performansi rada multimodalnog biometrijskog sistema, tako i oceni ispunjenja polaznih hipoteza. Rezultati istraživanja potvrdili su polaznu hipotezu da multimodalna biometrija podiže tačnosti postupka utvrđivanja identiteta, kao i da takvi sistemi poseduju inherentnu redudantnost koja im omogućava rad sa degradiranim performansa u slučaju nemogućnosti zahvatanja ili smeštaja nekog biometrijskog podataka. Posebno treba istaći nalaz da primena biometrije u nekim segmentima sistema bezbednosti dovodi do kontraproduktivnih efekata u drugim segmentima ovog sistema! Naime, širenje primene biometrije ugrožava normalan rad sistema za zaštitu svedoka, pa je potvrđena posebna hipoteza da nalaženje rešenja za ovaj problem treba tražiti u širem prostoru nego što je to samo prostor biometrije. U radu je predložen mogući sklop mera kao prostor rešenja.</ns1:description>
    <ns1:description language="en">In a world defined by Global economy, the Internet, mass migration, 
regional political instability and deeply rooted organized crime, the question of 
determining and verifying identities of individuals on a daily basis is of utmost 
significance for the security and efficient functioning of all social groups. The 
use of a single mode method for verifying identities has become an issue with 
potential for damaging consequences for individuals and organizations. This is 
especially true in highly sensitive fields such as banking, national security and 
the health sector. With the aim of minimizing risk and uncertainty, multiple 
identification metrics are being combined in multimodal systems. Research has 
been carried out with the aim of exploring the possibilities and limiting 
factors 
of applying multimodal biometric systems to the process of identifying persons, 
as  a  prerequisite  for  implementing  an  identity  management  system. 
Experimental and analytical research has been performed within the scientific, 
logistical, technical and technological, legal and financial domains in order to 
reach   the   appropriate,   concrete   conclusions,   observations   and 
recommendations  required  to  assess  the  feasibility  of  using  multimodal 
biometric  systems,  as  part  of  an  identification  management  system
.  A  case 
study approach was used as the most suitable methodology framework for the 
analysis  and  verification  of  the  above  described  hypothesis  of  applying 
multimodal biometric systems as a means of determining people’s identities. In
the case studies expl
ore the capabilities and limiting factors of a multimodal 
system  that  uses  two  popular  biometric  identifiers,  the  fingerprint,  and  the 
facial image. With the challenge set, this paper presents a subsequently applied 
methodology for overcoming the challenge
s that occur in the use of multimodal 
biometric systems. Presented herein are the specific features and characteristics 
of  two  biometric  databases.  Also  described  is  the  architecture  of  the 
experimental multimodal biometric system, the chosen business processes as well as the performance metrics used on the described system. The final 
sections of this paper presents the analysis and interpretation of the obtained 
performance  results  and  describe  the  level  of 
fulfillment
of  the  afore  set 
hypothesis.  The  results  obtained  confirm  the  initial  hypothesis  that  a 
multimodal biometric identification system increases the level of accuracy in 
determining a person’s identity. In addition the results show that such systems 
possess an inherent redundancy making them more
robust and able to work 
with  degraded  biometric  specimens  or  lack  of  specimen  whereby  the  given 
specimen  could  not  be  obtained  or  appropriately  stored.  It  is  important  to 
emphasize that applying biometric identity measures in certain segments of a 
security  system  has  counterproductive  effects  on  other  parts  of  the  overall 
security system. Namely, the use of such systems has a negative impact on the 
normal operations and functions of the witness protection process. As such we 
can confirm the hypothesis that
the solution for the outlined problem must be 
sought across a wider range of fields, beyond biometric identification.</ns1:description>
    <ns1:description language="sr">Menadžment informacionih tehnologija - Biometrijski informacioni sistemi / Information Technology Management - Biometric Information Systems
Datum odbrane:21.01.2014.</ns1:description>
    <ns1:keyword language="sr">biometrija, biometrijski identitet, elektronski identifikacioni dokument, menadžment identiteta, multimodalna biometrija, bezbednost, zaštita svedoka</ns1:keyword>
    <ns1:keyword language="en">Biometrics, biometric identity, electronic identification document, identity management, multimodal biometrics, security, witness protection</ns1:keyword>
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