CI PA 2003 XIX th International Symposium, 30 September - 04 October, 2003, Antalya, Turkey 
9. EXPERIMENTAL RESULTS: MERGING SEVERAL 
APPROACH IN THE SAME TOOL 
9.1 Combination of methodology 
The Etruscan amphora was surveyed with Laser scanner and 
photogrammetric tolls. Textured meshes of the object were 
produced using: i) Reconstructor Software for LFR data and 
digital photos, ii) Arpenteur and ROMA Software for 
photogrammetric photos. 
A theoretical model was produced by means of few real 
measures derived from real surveyed object. 
The final step of merging the different approaches in the same 
tool was provided trough Surveyor Software (by Joint Research 
Centre nEuropean Commission n JRC, EU). This tool allows 
importing wrml models, combining and comparing them, 
extracting linear-areas measurements, cross sections and 
orthographic view [Sgrenzaroli, Wolfart 2002]. 
An experimental test was set up in order to emphasise the 
potentiality of the combination between LFR and 
photogrammetry. An artificial hole was created in the laser 
range mesh using the Reconstructor mesh editor. The mesh 
derived from photos 7R, 7C, and 7R (see figure 3) using 
Arpenteur-ROMA tools was used to close the artificial hole. 
9.2 Visualization and Interaction 
The Surveyor Software provide different tool for managing the 
combined model: i) wrml models import and export, ii) model 
comparison, iii) linear-areas measurements extraction, iv) cross- 
sections and orthographic view creation. Examples of these 
tools used for the amphora test are show in figure 7. The 
photogrammetric model of the seabed surface where the 
Etruscan wreck was found combined with the LFR amphora 
model is also visualized. 
10. CONCLUSION 
The first steps of a common work towards building a survey 
tool that integrates the LFR technology and close range 
photogrammetry based on knowledge closer to the measured 
object has been presented in this article. The result is a textured 
mesh coming from a laser scanner software, a mesh coming 
from automatic photogrammetry using a geometrical 
approximation of the object and image correlation for the part of 
the object invisible by the scanner and a simple mesh for the 
lacked part of the measured object coming from a theoretical 
description. We are currently working on different aspect of this 
problem: i) the different data source integration in the 
Reconstructor Software, ii) the usage of automatic 
photogrammetric measurement beyond an approximation of the 
object geometry and image processing techniques, points of 
interest (as for example Harrisi points), iii) the geometrical 
formalization of the ideal model of the objects. 
Fig. 6. On the left: Synoptic view of method combination; on the left laser range and programmatic photo, the mesh derived from 
photogrammetry in the central icon, and on the right the artificial hole in the laser- derived mesh close through the mesh derived from 
photogrammetry 
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