Improving high-speed scanning systems by photometric stereo
Larue F., Dellepiane M., Scopigno R.
Scanning Normal enhancement Color projection
High-speed scanning systems can be extremely valuable for Cultural Heritage applications, especially when large collections of small objects have to be acquired. However, fine details may not be acquired using this technology. Nevertheless, it is possible to try to recover them by taking advantage of the additional data provided by these systems: the calibrated video sequence of the acquisition, and the position of the projector light for each frame. In this paper, we propose a workflow that processes the video sequence with a photometric stereo approach, in order to refine the coarse geometry provided by the scanner. A normal map is first extracted by a method that accounts for the unevenly distributed sampling that generally results from the particular trajectory followed by this kind of scanners during the acquisition. This normal map is then integrated in order to recover missing geometric features. Good performances are achieved, since the whole workflow is particularly suited to GPU programming.
Source: 12th International Symposium on Virtual Reality, Archaeology and Cultural Heritage. Short papers, VAST 2011, pp. 25–28, Prato, 18-21 October 2011
Publisher: Eurographics Association, Goslar, DEU
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@inproceedings{oai:it.cnr:prodotti:206120,
title = {Improving high-speed scanning systems by photometric stereo},
author = {Larue F. and Dellepiane M. and Scopigno R.},
publisher = {Eurographics Association, Goslar, DEU},
booktitle = {12th International Symposium on Virtual Reality, Archaeology and Cultural Heritage. Short papers, VAST 2011, pp. 25–28, Prato, 18-21 October 2011},
year = {2011}
}
0000-0003-1815-4756
