Συντάχθηκε 01-02-2012 13:28
από Galateia Malandraki
Email συντάκτη: gmalandraki<στο>tuc.gr
Ενημερώθηκε:
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Ιδιότητα: υπάλληλος ΑΡΜΗΧ.
ΠΟΛΥΤΕΧΝΕΙΟ ΚΡΗΤΗΣ
Τμήμα Ηλεκτρονικών Μηχανικών & Μηχανικών Υπολογιστών
ΠΑΡΟΥΣΙΑΣΗ METAΠΤΥΧΙΑΚΗΣ ΕΡΓΑΣΙΑΣ
ΙΩΑΝΝΗ ΧΡΙΣΤΟΔΟΥΛΟΥ
με θέμα
“Υλοποίηση Τρισδιάστου και Διαδραστικού Συστήματος Φωτισμού για Πειράματα Πιστότητας Σχεδιασμού Γραφικών με fMRI”
“An Interactive 3D Lighting System for fMRI Rendering Fidelity Experiments”
Παρασκευή 3 Φεβρουαρίου 2012, 2 μμ
Αίθουσα 145.Π58, Κτίριο Επιστημών, Πολυτεχνειούπολη
Εξεταστική Επιτροπή
Επ. Καθ. Κατερίνα Μανιά (επιβλέπων)
Επ. Καθ. Μιχάλης Λαγουδάκης
Επ. Καθ. Βασίλης Σαμολαδάς
Abstract
Although improvements in basic computer graphics rendering hardware and lighting algorithms have produced remarkable results, it is still computationally demanding to render a highly realistic Virtual Environment (VE) in real-time. This thesis presents a real-time synthetic lighting system incorporating sophisticated global illumination algorithms aiming to induce similar subjective lighting impressions as in the real world. The system allows interactive navigation as well as manipulation of lighting, updated in real-time, while being immersed in a fMRI scanner. It served as the main platform for neuroscientific experimental protocols, exploring the effect of lighting variations (daylight vs forms of artificial light) on subjective impressions of comfort, ‘reality’ and presence, in relation to a group of patients suffering from the ‘depersonalization’ syndrome. Depersonalization is a state in which a person feels that they and their surroundings are oddly unreal and dreamlike. The work presented in this thesis was based on the observation that people suffering from the depersonalization syndrome often describe feeling slightly ‘altered’ under different lighting conditions. In particular, it has been noted that depersonalization occurs more commonly when people are in artificial lighting conditions than in natural light Neuroscientific experiments were conducted at the Brighton and Sussex Medical School where the system was installed, utilizing a group of healthy individuals also exploring whether artificial scenes of visual fidelity ranging from photorealistic to wireframe for training or for therapeutic purposes engage common perceptual or neuroscientific mechanisms. The system design and implementation as well as experimental and brain image data will be presented.
Συνημμένα:
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DiplomatikiErgasia-Anakoinwsi_jchrist.doc
Μεταφορτώσεις: 223,
Μέγεθος: 44 KB application/octet-stream
