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Displaying 1-6 out of 6 total
Semantic Classification of Byzantine Icons
Found in: IEEE Intelligent Systems
By Paraskevi Tzouveli, Nikos Simou, Giorgios Stamou, Stefanos Kollias
Issue Date:March 2009
pp. 35-43
The painters of Byzantine and post-Byzantine icons use specific rules and iconographic patterns. On the basis of these rules and patterns, a proposed knowledge-based image analysis system classifies icons. First, the system detects and analyzes the most im...
Adaptive Reading Assistance for the Inclusion of Students with Dyslexia: The AGENT-DYSL Approach
Found in: Advanced Learning Technologies, IEEE International Conference on
By Paraskevi Tzouveli, Andreas Schmidt, Michael Schneider, Antonis Symvonis, Stefanos Kollias
Issue Date:July 2008
pp. 167-171
Dyslexia is a major barrier to success in education and later on the job as reading skills are fundamental for personal competence development. Children with dyslexia have special learning needs (e.g., more teacher support), which currently only specialize...
Confronting the Synchronization Problem of Semantic Region Under Geometric Attacks
Found in: Multimedia and Expo, IEEE International Conference on
By Paraskevi Tzouveli, Klimis Ntalianis, Stefanos Kollias
Issue Date:July 2006
pp. 1345-1348
In this paper, an affine invariant watermarking scheme, robust to geometric attacks, is proposed and applied to face regions. Initially, face regions are unsupervisedly extracted from an initial image and a normalization procedure, invariant to geometric a...
Towards a Personalized e-Learning Scheme for Teachers
Found in: Advanced Learning Technologies, IEEE International Conference on
By Phivos Mylonas, Paraskevi Tzouveli, Stefanos Kollias
Issue Date:September 2004
pp. 560-564
One of the most important topics in modern e-learning schemes for teachers is the treatment of information and users at a personalized level. In this framework, the automated extraction of user profiles from an e-learning system is an interesting and impor...
Non-Verbal Feedback on User Interest Based on Gaze Direction and Head Pose
Found in: Semantic Media Adaptation and Personalization, International Workshop on
By Stelios Asteriadis, Paraskevi Tzouveli, Kostas Karpouzis, Stefanos Kollias
Issue Date:December 2007
pp. 171-178
When users of computer systems are given the op- portunity to provide feedback on their preferences or interests in most cases they are presented with a ques- tionnaire to be filled. However, this means of interac- tion requires an additional cognitive ste...
Semantic object watermark re-synchronization based on skeleton vertex corresponds
Found in: Proceedings of the 2nd ACM workshop on Multimedia in forensics, security and intelligence (MiFor '10)
By Klimis Ntalianis, Konstantinos Raftopoulos, Paraskevi Tzouveli, Stefanos Kollias
Issue Date:October 2010
pp. 13-18
Plain rotation, scaling, and/or translation of an image can lead to loss of watermark synchronization and thus authentication failure. The block based approaches in particular are sensitive to geometric distortions due to the need for repositioning the blo...