| A. Raouzaiou |
| Αναπαράσταση Συναισθήματος και Σύνθεση Εκφράσεων Προσώπου και Χειρονομιών σε Εικονικούς Χαρακτήρες |
| Ph.D. Thesis, School of Electrical and Computer Engineering, National Technical University of Athens |
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ABSTRACT
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| The main research area of this Ph.D is emotion representation in Human-Computer Interaction (HCI) and especially emotion synthesis and analysis by synthesis in the framework of the MPEG-4 International Standard. It combines psychological results for the perception of emotion with experimental results derived from the analysis of relative databases. The emotions are modeled using Whissel’s emotions wheel, which transforms the emotions into a two-dimensional space, thus facilitating their reproduction. Research in facial expression analysis and synthesis has mainly concentrated on archetypal emotions. In particular, sadness, anger, joy, fear, disgust and surprise are categories of emotions that attracted most of the attention in human computer interaction environments. The current thesis describes an approach to synthesize expressions, including intermediate ones, via the tools provided in the MPEG-4 standard based on real measurements and on universally accepted assumptions of their meaning and extends emotion representation theory by modeling gestures using expressivity parameters. The results of the synthesis process can be applied to avatars (ECAs-Embodied Conversational Agents) and to multimodal HCI systems, so as to convey the communicated messages more vividly than plain textual information or simply to make interaction more lifelike.
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| 19 September, 2006 |
| A. Raouzaiou, "Αναπαράσταση Συναισθήματος και Σύνθεση Εκφράσεων Προσώπου και Χειρονομιών σε Εικονικούς Χαρακτήρες", Ph.D. Thesis, School of Electrical and Computer Engineering, National Technical University of Athens |
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