Catálogo de publicaciones - libros

Existing biometric authentication systems use probabilistic method to decide the claimed identity of a user. But, these are weak on the privacy protection perspective as anyone can access someone’s biometric template without restrictions. Therefore, we propose a scheme that can improve the biometric authentication accuracy with the concept of digital signature with biometric digital key. By using these biometric digital key pairs, each entity(sender) can mutually authenticate the others based on the biometric certificate on open network.

This study is on developing methodology of accessibility and usability for the auditory disabled by producing the interface of converting auditory elements into visual elements that are extracted from elements of the artistic representational method of contemporary media art, and by building on-line community for the auditory disabled to enhance and to reflect the accessibility and the usability through the group’s own development and design. At the first stage, analyses on current web animations and their accessibility of auditory disabled persons. At the second stage, analyses on contemporary media artworks are followed to extract usable elements from the artwork. At this stage, actual image captions are created. At the third stage, the image caption generating software is developed, and adjusted image captions are produced as the content. At the last stage, the linkage of web and on-line user community is set up. The development can improve accessibility of the auditory disabled using a various digital content, and it magnifies the territory for the application and the production of creative interfaces. It can also expand the area of content technology.

Issue of the computer software quality has an interdisciplinary nature and it is a subject of research in numerous scientific disciplines, including the software engineering, economics, psychology and ergonomics. Considerations concerning the integration of the subjective factors with the technical parameters in respect of the computer software quality testing are not present in the literature. Therefore, this Article comprised the results of research on the software quality assessments made by users. This Article includes four parts, which represent: the research methods, the economic conditions connected with the computer software quality assessment, the social conditions and the Summary. The first part of the Article discusses the method of correspondence as well as the typology of the economic and social working conditions that were used to create the correlation model for the computer software assessment. In the second part of the Article the authors discussed the economic conditions for computer software assessment that were qualified to one of the three groups: variables that describe: organizational and technical situation, self assessment of the employee’s position in the company and the evaluation of the employment security. Further part of this Article is dedicated to correlation between the social issues and the computer software quality assessment. The four variables: sight affections, monotony of work, work intensiveness as well as the psychophysical affections were classified under a single group titled Employee Health Hazards. This Article is concluded with Summary, where the authors indicated the essentiality of economic and social issues in the computer software quality assessment.

Within the eEurope2010 initiative “An Information Society for All”, development methods which enable the inclusion of the end-user become essential in order to ensure the paradigm of Universal Access. It is important to understand the end-users, their behavior, their knowledge of technology and their abilities and the context in which the applications will be used. In this paper, we combine our experiences in both Agile Methods and Usability Engineering and show that the resulting agile usability methods – however these maybe designated – are ideally suited to design and develop applications which follow the idea of Universal Access and where the end-user is having great influence on systems design.

There are tremendous need increase for personal verification and identification in internet security, electronic commerce and access control in recent years. Also, as the demands for security in many applications such as data protection and financial transaction become an increasingly relevant issues, the importance of biometric technology is rapidly increasing. In this paper, we explored face recognition system for person authentication. We explicitly state the design decisions by introducing a generic modular PCA face recognition system. We designed implementations of each module, and evaluate the performance variations based on virtual galleries and probe sets. We perform experiments and report results using equal error rates (EER) based on verification scenario for access control applications.

In this paper we developed driver authentication system based on face recognition. Since 2D based face recognition has been shown its structural limitation, 3D model based approach for face recognition has been spotlighted as a robust solution under variant conditions of pose and illumination. Since a generative 3D face model consists of a large number of vertices, a 3D model based face recognition system is generally inefficient in computation time. In this paper, we propose a novel 3D face representation algorithm to reduce the number of vertices and optimize its computation time. Finally, we evaluate the performance of proposed algorithm with the Korean face database collected using a stereo-camera based 3D face capturing device. In addition, various decision making similarity measures were explored for final results. Our experimental results indicated that the algorithm is robust for driver authentication inside the vehicle and is also reasonably fast for real-time processing.

In this paper, we propose a graphics adaptation framework with a mechanism of video streaming to overcome the shortcoming of real-time representation and interaction experiences of 3D graphics application running on mobile devices. We therefore develop an interactive 3D visualization system based on the proposed framework for rapidly representing a complex 3D scene on mobile devices without having to download it from the server. Our system scenario is composed of a client viewer and an adaptive media streaming server. The client viewer offers the user to navigate the 3D scene and interact with objects of interests for studying about them through the responded text descriptions. The server adaptively provides media contents to the client according to the user preferences, interactions, and the condition of wireless network.

While software developers for desktop applications can rely on mouse and keyboard as standard input devices, developers of virtual reality (VR) and augmented reality (AR) applications usually have to deal with a large variety of individual interaction devices. Existing device abstraction layers provide a solution to this problem, but are usually limited to a specific set or type of input devices. In this paper we introduce DEVAL – an approach to a device abstraction layer for VR and AR applications. DEVAL is based on a device hierarchy that is not limited to input devices, but naturally extends to output devices.

Guidelines and standards are gaining increasing importance world-wide. However, their process of development is still in a state of flux. The same stands regarding the means for spreading, retrieving and utilising such knowledge. A portal-based approach is proposed here for supporting all lifecycle phases of guidelines and standards. The proposed approach has significant advantages: (a) it allows contributors from all over the globe to form working groups, share virtual working spaces and, thereby, collaborate for the development of guidelines and standards; (b) it facilitates the rapidly spread and effective use of produced knowledge; and (c) it tackles the demand-supply gap by bridging developers and consumers of knowledge.

The paper describes an approach to specifically tailored user interface design, to adapt the user interface to the specific needs of mobility impaired travellers. Given a user has some interaction impairments or s/he is in a situation that causes an interaction impairment (i.e. noisy environment has the same consequences as hearing impairment), another modality is to be used or adapted to compensate this impairment. As sound has other interaction characteristics than graphical user interface elements (e.g. information can not be presented in parallel, but sequentially), rules for substituting some modalities through others are described.