Συντάχθηκε 16-10-2013 13:57
από Eleni Stamataki
Email συντάκτη: estamataki<στο>tuc.gr
Ενημερώθηκε:
-
Ιδιότητα: σύνταξη/αποχώρηση υπάλληλος.
Σχολή Ηλεκτρονικών Μηχανικών και Μηχανικών Υπολογιστών
Πρόγραμμα Προπτυχιακών Σπουδών
ΠΑΡΟΥΣΙΑΣΗ ΔΙΠΛΩΜΑΤΙΚΗΣ ΕΡΓΑΣΙΑΣ
ΧΑΝΤΖΗ ΕΥΘΥΜΙΑΣ
με θέμα
Κατασκευή Φασματικού Κύβου από Υπερφασματική Απεικόνιση Σάρωσης
Spectral Cube Construction from Hyper Spectral Scanning
Πέμπτη 17 Οκτωβρίου 2013, 9πμ
Αίθουσα Συνεδριάσεων, Κτίριο Επιστημών, Πολυτεχνειούπολη
Εξεταστική Επιτροπή
Αναπληρωτής Καθηγητής Μπάλας Κωνσταντίνος (επιβλέπων)
Καθηγητής Καλαϊτζάκης Κωνσταντίνος
Επίκουρος Καθηγητής Μπούχερ Ματτίας
Abstract
This diploma thesis deals with a new method in acquiring and reconstructing the spectral cube in hyper spectral imaging. The method employs a spatial variable band-pass optical filter, which is translated over a two dimensional sensor's area. That way the sensor's pixel columns acquire optical information captured at different wavelengths at a time. By translating the variable filter, all the spectral bands are captured by the sensor's pixels in time sequence. After completing the acquisition process, the spectral and spatial information are stored in a multiplexed fusion. The next step is to disentangle the multiplexed information, so that the spectral cube to contain a stack of images each one captured at a different wavelength. The specially developed method relies on the re-sampling of the stored data with the aid of geometrical transformations. This results in a straightforward and fast de-multiplexing of the dataset and the reconstruction of spectral cube consisted of hundreds of narrow-band spectral images, spanning both the visible and near infrared part of the spectrum. Technical evaluation of the method showed a series of distincted advantages over prior art included but not limited to unparallel light throughput and high, user defined spectral resolution. Moreover, the measurement of Modulation Transfer Function(MTF) of the system with the contribution of a specially developed method showed that the spatial resolution of the spectral images, in terms of lp/mm, is high and wavelength dependent. The above features make our approach suitable in demanding spectral imaging applications, such as microscopic images and non-destructive analysis.
Συνημμένα:
-
ΑΝΑΚΟΙΝΩΣΗ ΧΑΤΖΗ.docx
Μεταφορτώσεις: 103,
Μέγεθος: 28 KB application/vnd.openxmlformats-officedocument.wordprocessingml.document
