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Tesi etd-04082009-144203


Thesis type
Tesi di dottorato di ricerca
Author
DELLEPIANE, MATTEO
URN
etd-04082009-144203
Title
Uses of uncalibrated images to enrich 3D models information
Settore scientifico disciplinare
INF/01
Corso di studi
INGEGNERIA DELL'INFORMAZIONE
Commissione
Relatore Prof. Simoncini, Luca
Relatore Dott. Scopigno, Roberto
Parole chiave
  • immagini
  • computer graphics
  • complessit√†
  • colore
  • 3D scanning
  • registrazione
Data inizio appello
29/05/2009;
Consultabilità
completa
Riassunto analitico
The decrease in costs of semi-professional digital cameras has led to the possibility<br>for everyone to acquire a very detailed description of a scene in a very short time.<br>Unfortunately, the interpretation of the images is usually quite hard, due to the amount<br>of data and the lack of robust and generic image analysis methods. Nevertheless, if a<br>geometric description of the depicted scene is available, it gets much easier to extract<br>information from 2D data.<br>This information can be used to enrich the quality of the 3D data in several ways.<br>In this thesis, several uses of sets of unregistered images for the enrichment of 3D<br>models are shown.<br>In particular, two possible fields of application are presented: the color acquisition,<br>projection and visualization and the geometry modification.<br>Regarding color management, several practical and cheap solutions to overcome the<br>main issues in this field are presented. Moreover, some real applications, mainly related<br>to Cultural Heritage, show that provided methods are robust and effective.<br>In the context of geometry modification, two approaches are presented to modify already<br>existing 3D models. In the first one, information extracted from images is used<br>to deform a dummy model to obtain accurate 3D head models, used for simulation<br>in the context of three-dimensional audio rendering. The second approach presents<br>a method to fill holes in 3D models, with the use of registered images depicting a<br>pattern projected on the real object.<br>Finally, some useful indications about the possible future work in all the presented<br>fields are given, in order to delineate the developments of this promising direction of<br>research.
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