KEYWORDS: 3D modeling, Data modeling, Laser scanners, 3D image processing, Data acquisition, Cameras, Systems modeling, 3D acquisition, Visualization, Global Positioning System
The digital documentation of monuments and architectures is an important field of application of the 3D modeling where
both visual quality and precise 3D measurement are important. This paper proposes an integrated approach based upon
the combination of different 3D modeling techniques for the virtual reconstruction of complex architectures like those
found in medieval castles. The need of combining multiple techniques, like terrestrial laser scanning, photogrammetry
and digital surveying comes from the complexity of some structures and by the lack of a single technique capable of
giving satisfactory results in all measuring conditions. This paper will address modeling issues related to the automation
of photogrammetric methods and to the fusion of 3D models acquired with different techniques, at different point
densities and measurement accuracies. The test bench is a medieval castle placed in Trentino A.A., a tiny region in
Northern Italy.
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