Full text: Proceedings of the CIPA WG 6 International Workshop on Scanning for Cultural Heritage Recording

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Figure 5. Left: Shaded view of the sculptured model. Right: Combined with vector features. 
With the full set of functionalities, many different visualizations 
can be performed. A simple one is to assign a texture to the 
sculpture that is similar to the current or supposed original 
appearance of the sculpture and show it from different 
directions. Video sequences, e.g. rotating the camera position 
around the sculpture, can easily be generated in this way. Such 
an animation assists the observer in achieving a good 3D 
impression of the object. 
The vector data can be emphasized when combined with the 
surface model. By assigning semi-transparency to the model’s 
surface, the position of seams and rivets can be viewed in 3D 
even though these features are not visible in reality (fig 5). 
Additionally, parts of the sculptures that have vanished in the 
past can be reconstructed digitally and switched on and off for 
viewing. Thus, the most probable original impression of the 
sculpture can be generated without changing the real sculpture 
itself. The crown and the loincloth of the sculpture were created 
using photos of comparable objects from other sculptures. 
MEASUREMENTS 
Using the model of the sculpture, measurements can be 
performed that are not possible with the sculpture itself. Using 
rather simple software tools, point coordinates or distances 
between points can be measured as 3D distances or differences 
parallel to selected coordinate axes. Points without direct 
connection in between can be used easily. 
Thus, measurements can now be done without the need to use 
the real sculpture itself with sufficient accuracy. This will be an 
advantage when the sculpture will be in the exhibition of the 
museum again, or not accessible at all to scientists interested in 
further investigations. 
CONCLUSIONS 
The used approach for the geometric documentation of the 
statue of Pepi combines the prospects of the two methods used. 
The documentation of the seams and rivets with close range 
photogrammetry represents established standard technologies. 
The digital surface model of the sculpture generated from laser 
scanner points allows measurements on the one hand and is 
suitable for various kinds of visualizations, in addition. The 
digital reconstruction of perished parts as well as animations 
can be made using these data. 
The accuracy of the digital model is not sufficient for an exact 
reconstruction of the sculpture, which was not an objective of
	        
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