Title:	Interactive reconstruction of 3-D objects from silhouettes
Authors:	Botino, A. Cavallero, L. Laurentini, A.
Citation:	Journal of WSCG. 2001, vol. 9, no. 1-3.
Issue Date:	2001
Publisher:	Václav Skala - UNION Agency
Document type:	článek article
URI:	http://hdl.handle.net/11025/15759 http://wscg.zcu.cz/wscg2001/WSCG2001_Program.htm
ISSN:	1213-6972 (print) 1213-6980 (CD-ROM) 1213-6964 (online)
Keywords:	počítačové vidění;tvar ze siluety;průsečík objemu;interaktivní algoritmus
Keywords in different language:	computer vision;shape from silhouette;volume intersection;interactive algorithms
Abstract in different language:	Many techniques for reconstructing 3-D shapes from 2-D images use silhouette data. A problem with this approach is that, if no a priori information about the 3-D shape is available, we do not know neither the accuracy of the reconstruction, nor where it is better to locate new viewpoints for improving the accuracy. We present and demonstrate a new general approach to interactive, object-specific shape-from-silhouette algorithms. The approach holds for completely unknown shapes. It is based on a necessary condition for the reconstruction to have been performed with the best possible accuracy. From this condition, we derive: 1) a quantitative measure of reconstruction accuracy; 2) rules for finding new viewpoints, if the accuracy is not satisfactory. The algorithm has been implemented for polyhedra, and demonstrated in a virtual environment.
Rights:	© Václav Skala - UNION Agency
Appears in Collections:	Volume 9, number 1-3 (2001)

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