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its top. Using the fly-over video different aspects of the imaged 
object on the map may be created. In that way front, right, left, 
back and isometric views of the object may appear (fig. 2). 
Additionally the camera may be placed on the objects model 
and rotate around its vertical axis. In this way, a virtual 
panoramic image demonstrating the view from a specific point 
on the map may be created. 
5. CONCLUSIONS 
Some very important conclusions are derived, when the above- 
mentioned technique is used to visualize cartographic data: 
e The 3D map and its video consists of a dynamic 
product that enhances the usability of cartographic 
data using photogrammetric data (ortho images) and 
visualization techniques 
e Itenables a better understanding of the map 
e It shows a realistic image of the map since it provides 
the objects’ model with the best physical 
representation using the draped ortho image. 
e The cost for end user is minimum since a video player 
application is adequate for the browsing of the video 
file. 
Future research will concentrate on the use of two video files 
(created from parallel video camera paths) in order to create a 
real 3D video of the map, using stereovision techniques that 
will provide a more realistic representation of the cartographic 
data (Sechidis, L., et.al. 2001). Additionally, the creation of 
VRML files of the map’s draped model will enable the use of 
the 3D maps through the Internet allowing more people to take 
advantage of the new technology capabilities. 
  
Fig. 3. The configuration of the camera’s fly-over path. 
6. REFERENCES 
Boutoura, Ch, Livieratos. E., Patias P. (1999). Focal 
Photomaps For Urban Use. Proceedings of the 19" 
International Cartographic Conference, Vol. 2, 1489-1496, 
OTTAWA ICA 1999. 
Peterson, M., 2002, Between Reality and Abstraction: Non- 
Temporal Applications of Cartographic Animation. 
http://maps.unomaha.edu/AnimArt/article.html 
Rhyne, T.-M., (2001). Exploring the Concept of Streaming 
Media for Geographic Visualization. 
http://www.geovista.psu.edu/ sites/icavis/publications/Taupo.ht 
ml 
Sechidis, L., Tsioukas, V., Patias, P., (2001), Geo-referenced 
3D Video as visualization and measurement tool for Cultural 
Heritage, Proceedings of XVIII CIPA Symposium, Germany. 
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