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Wyszukujesz frazę "Biometrics" wg kryterium: Temat


Wyświetlanie 1-14 z 14
Tytuł:
An access control system for e-learning management systems
Autorzy:
Irfan, A. C.M.
Takuya, K.
Nomura, S.
Yoshimi, F.
Powiązania:
https://bibliotekanauki.pl/articles/951666.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
biometria
nauczanie na odległość
biometrics
e-learning
face identification
Opis:
Knowledge is a key factor to the personal success. The certifications are the instant tools that are commonly available to assess the personal success. In an e-Learning environment, where the learning projects are delivered with the aim to provide a professional or an academic certification, it is integral that the Learning Management Systems provide security features that will ensure the credibility of the online real-time assessments and the certification. In a conventional examination environment, there will be invigilators to overlook the examinees, on the contrary, in an on-line examination environment; it is vital that an invigilation mechanism is implemented to ensure the integrity of the examination. In this article we present a face based access control system for online e-Learning systems.
Źródło:
Journal of Medical Informatics & Technologies; 2009, 13; 41-46
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Method of signature recognition with the use of the complex features
Autorzy:
Doroz, R.
Pałys, M.
Orczyk, T.
Safaverdi, H.
Powiązania:
https://bibliotekanauki.pl/articles/333247.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
biometrics
signature recognition
complex features
biometria
rozpoznawanie podpisu
funkcje złożone
Opis:
In this paper a new method of handwritten signatures verification has been proposed. This method, for each signature, creates complex features which are describing this signature. These features are based on dependencies analysis between dynamic features registered by tablets. These complex features are then used to create vectors describing the signature. Elements of these vectors are calculated using measures proposed in this work. The similarity between signatures is assessed by determining the similarity of vectors in the compared signatures. Research, whose results will be presented in the further part of this work, have shown a high efficiency of verification using proposed method.
Źródło:
Journal of Medical Informatics & Technologies; 2014, 23; 155-162
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Personal identity verification method based on lips photographs
Autorzy:
Wrobel, K.
Doroz, R.
Porwik, P.
Naruniec, J.
Kowalski, M.
Powiązania:
https://bibliotekanauki.pl/articles/333548.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
biometrics
lip features
data classification
biometria
cechy wargi
klasyfikacja danych
Opis:
The paper presents a personal identification method based on lips photographs. This method uses a new approach to the extraction and classification of characteristic features of the mouth from photographs. It eliminates the drawbacks that occur during the acquisition of lip print images with the use of the forensic method that requires special tools. Geometrical dimensions of the entire mouth as well as of the upper and lower lips were adopted as the features, on the basis of which the verification is performed. An ensemble classifier was used for the classification of the features obtained. The effectiveness of the classifier has been verified experimentally.
Źródło:
Journal of Medical Informatics & Technologies; 2015, 24; 59-65
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Combining dynamic data with physical biometric verification to counteract spoofing
Autorzy:
Nishiuchi, N.
Powiązania:
https://bibliotekanauki.pl/articles/333898.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
biometryczne cechy fizyczne
dane dynamiczne
antyfałszowanie
physical biometrics
dynamic data
anti-spoofing
Opis:
Current physical biometric verification systems are hampered by a major vulnerability: spoofing. Keeping biological information, such as the face, fingerprints, and irises, concealed from others in daily life is difficult, and therefore theft and counterfeit of exposed biological information can be relatively easily accomplished by first capturing an individual's targeted information as an image and then using the data to reproduce a model. Here, I propose a new method of physical biometric verification that uses dynamic data which are difficult to spoof. This basic concept can be applied to several types of biometric verification, such as those based on finger geometry, finger veins, irises, and the contour of the eyelid. I also propose an algorithm for this new verification method and provide experimental examples of its application.
Źródło:
Journal of Medical Informatics & Technologies; 2010, 15; 11-17
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biometric recognition system based on the motion of the human body gravity centre analysis
Autorzy:
Porwik, P.
Zyguła, J.
Doroz, R.
Proksa, R.
Powiązania:
https://bibliotekanauki.pl/articles/333932.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
dane biometryczne
środek ciężkości
podpis
rozpoznawanie
biometrics
centre of gravity
signature
recognition
Opis:
In this paper we present a novel approach that enables the determination and measurement of important features associated with the human body movement. This information can be used in the construction of a biometric personal identification system. Biometrics is, essentially, a pattern recognition system based on measurements of unique physiological or behavioural features as acquired from an individual. The domain of biometric techniques is currently placed within recently developed disciplines of science. Biometry or biometrics is simply defined as automatically recognizing a person using distinguishing traits and is widely used in various security systems. Biometry can be defined as a method of personal identification based on individuals' physical and behavioural features. Physiological biometrics covers data coming directly from a measurement of part of a human body, for example a fingerprint, the shape of the face, or from the retina. Behavioural biometrics analyses data obtained on the basis of an activity performed by a given person, for example speech and the handwritten signature. The system of biometrics defined above can now be expanded, and a new biometrics system can be considered. In our approach, human foot pressure on a surface is measured and the pressure data retrieved. The pressure parameters are collected without the necessity of any movements of the feet.
Źródło:
Journal of Medical Informatics & Technologies; 2010, 15; 61-69
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Person verification based on keystroke dynamics
Autorzy:
Doroz, R.
Porwik, P.
Safaverdi, H.
Powiązania:
https://bibliotekanauki.pl/articles/334042.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
keystroke dynamics
ensemble of classifiers
biometrics
dynamika pisania na klawiaturze
zespół klasyfikatorów
biometria
Opis:
This paper presents a new multilayer ensemble of classifiers for users verification who use computer keyboard. The special keyboard extracts the key pressure and latency between keyboard keys pressed during password entered. When user is typing password the system creates a pattern based on time and key pressure. For users verification group of classifiers have been proposed. It allows to obtain the higher accuracy level compared to alternative techniques. The efficiency of the proposed method has been confirmed in the experiments carried out.
Źródło:
Journal of Medical Informatics & Technologies; 2015, 24; 39-44
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Privacy issues of electronic passports
Autorzy:
Riha, Z.
Matyas, V.
Powiązania:
https://bibliotekanauki.pl/articles/333511.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
kontrola dostępu
biometria
elektroniczny paszport
prywatność
śledzenie
access control
biometrics
electronic passport
privacy
skimming
tracking
Opis:
Electronic passports combine classical passport booklets with the smartcard technology, biometrics and cryptography. The communication with the electronic passports is based on contactless ISO 14443 technology, designed for the communication distance of 0-10 cm. This paper is focused on the privacy aspects of the electronic passports. Weaknesses of the basic access control and extended access control are discussed. Significant emphasis is put on passport fingerprinting which may allow guessing the issuing country. Aspects of biometric data formats, skimming, eavesdropping and active authentication challenge semantics are also covered. The conclusions sum up recommendations for passport holders and issuers.
Źródło:
Journal of Medical Informatics & Technologies; 2011, 17; 37-48
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
User profiling based on multiple aspects of activity in a computer system
Autorzy:
Wesołowski, T.
Kudłacik, P.
Powiązania:
https://bibliotekanauki.pl/articles/333926.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
behavioral biometrics
user profile
intruder detection
user verification
biometria behawioralna
profil użytkownika
wykrywanie intruza
weryfikacja użytkownika
Opis:
The paper concerns behavioral biometrics, specifically issues related to the verification of the identity of computer systems users based on user profiling. The profiling method for creating a behavioral profile based on multiple aspects of user activity in a computer system is presented. The work is devoted to the analysis of user activity in environments with a graphical user interface GUI. Mouse activity, keyboard and software usage are taken into consideration. Additionally, an attempt to intrusion detection based on the proposed profiling method and statistical measures is performed. Preliminary studies show that the proposed profiling method could be useful in detecting an intruder masquerading as an authorized user of the computer system. This article presents the preliminary research and conclusions.
Źródło:
Journal of Medical Informatics & Technologies; 2014, 23; 121-130
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Personal identification using retina
Autorzy:
Choraś, R.S.
Powiązania:
https://bibliotekanauki.pl/articles/333033.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
siatkówka
biometria siatkówki
wybór cech obrazu
retina
retina biometrics
vessel pattern
feature extraction
Gabor transform
feature vector
matching
Opis:
This paper proposes a biometric system for authentication that uses the retina blood vessel pattern. The retina biometric analyzes the layer of blood vessels located at the back of the eye. The blood vessels at the back of the eye have a unique pattern, from eye to eye and person to person. The retina, a layer of blood vessels located at the back of the eye, forms an identity card for the individual under investigation. In particular retinal recognition creates an ”eye signature” from its vascular configuration and its artificial duplication is thought to be virtually impossible.
Źródło:
Journal of Medical Informatics & Technologies; 2009, 13; 53-58
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The lip print recognition using Hough transform
Autorzy:
Smacki, Ł.
Porwik, P.
Tomaszycki, K.
Kwarcińska, S.
Powiązania:
https://bibliotekanauki.pl/articles/333892.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
rozpoznawanie ludzkich ust
cheiloskopia
dane biometryczne
przekształcanie Hougha
wydruk wargi
human lips recognition
cheiloskopy
biometrics
Hough transform
lip print
Opis:
This paper presents the new method of lip print recognition. Lip print analysis is based on sulcus-topology features manifested on human lips. The structure of the characteristic lip lines is transformed to a digital image and classified using the Hough transformation. The proposed algorithm gives good level of recognition accuracy and can be used in biometric applications and applied in forensic services.
Źródło:
Journal of Medical Informatics & Technologies; 2010, 14; 31-38
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An approach to classify keystroke patterns for remote user authentication
Autorzy:
Saha, J.
Chaki, R
Powiązania:
https://bibliotekanauki.pl/articles/333293.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
free text
keystroke dynamics
biometrics
digraph grouping
dense area identification
tekst
dynamika pisania na klawiaturze
biometria
struktura dwuznakowa
digraf
Opis:
The authentication of users is of utmost importance in remote applications such as healthcare, banking, stock markets, etc. Key stroke dynamics are popular biometrics tools used for this purpose. Continuous authentication requires free text analysis which has a number of challenges. This paper has proposed a solution to identify the existence of a unique pattern in each individual user’s keystroke dynamics. However, dense zone identification is important factor in forming the intelligent database of user profile for authentication. The authors have categorized basic key stroke features of digraph into 57 groups depending on distance traversed while moving from one key to another. The paper also includes graphical plots of the grouping of time vector which has unveiled some characteristics of overlapping typing style of users. The authors hope to extend this logic for identifying behavioral disorders in users.
Źródło:
Journal of Medical Informatics & Technologies; 2014, 23; 141-148
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multiscaled hybrid features generation for AdaBoost object detection
Autorzy:
Dembski, J.
Powiązania:
https://bibliotekanauki.pl/articles/333917.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
object detection
machine learning
biometrics
AdaBoost classifier
high resolution images
detekcja obiektów
uczenie maszynowe
biometria
klasyfikator AdaBoost
obrazy wysokiej rozdzielczości
Opis:
This work presents the multiscaled version of modified census features in graphical objects detection with AdaBoost cascade training algorithm. Several experiments with face detector training process demonstrate better performance of such features over ordinal census and Haar-like approaches. The possibilities to join multiscaled census and Haar features in single hybrid cascade of strong classifiers are also elaborated and tested. The high resolution example images were used in detector training process.
Źródło:
Journal of Medical Informatics & Technologies; 2015, 24; 75-82
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A note on Töeplitz matrix-based model in biometrics
Autorzy:
Saeed, K.
Powiązania:
https://bibliotekanauki.pl/articles/332882.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
macierze Teoplitza
multibiometria
wybór cech obrazu
opis obrazu
bezpieczeństwo systemów biometrycznych
fałszowania w biometrii
Toeplitz matrices
multibiometrics
feature extraction
image description
security in biometric systems
spoofing in biometrics
Opis:
This paper presents a summary of the work presented as an invited paper at MIT 2008 International Conference. The work comprises a general note on the problems we meet in our everyday contact with biometrics and their different systems. A particular attention is paid to the anti-spoofing approaches in having a safe and convenient system of human verification for personal identification. A conclusion is drawn that neither stand-alone nor multi-system Biometrics are ideal and convenient to people for their daily necessity of being identified. The author suggests a system that may seem practical in banks and cash machines, for example, in which a biometric system is used (fingerprint or face identification for example) in conjunction with the popular means of account securing, the PIN code.
Źródło:
Journal of Medical Informatics & Technologies; 2008, 12; 29-31
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biometrical identification on the ground of the eye movement, executed by means of the artificial neural network
Autorzy:
Brzeski, R.
Ober, J.
Powiązania:
https://bibliotekanauki.pl/articles/333701.pdf
Data publikacji:
2004
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
sztuczne sieci neuronowe
identyfikacja biometrii
stymulacja wzrokowa
system pomiarowy Ober2
rozpoznanie
warstwa
komórka nerwowa
ruch gałki ocznej
artificial neural network
ANN
biometrics identification
visual stimulation
Ober2
teaching vectors
recognition
layer
neurone
eye movement
Opis:
In this article was written attempt to use the eye movement to biometrics identification. There are few words about theory of biometrics identification. After that there is described the way of recording of data. It is made by system ‚Ober2’. To process collected data the algorithms of artificial neural network are used. For this need, dedicated application was written. Functionality of the application, in article was described, as well as the examples - results of working of the artificial neural networks, for chosen criterions of researches. The plans for future researches were placed at the end of the article.
Źródło:
Journal of Medical Informatics & Technologies; 2004, 7; KB47-54
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-14 z 14

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