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Proceedings Paper

Subpixel location of discrete target images in close-range camera calibration: a novel approach
Author(s): R. Anchini; J. A. Beraldin; C. Liguori
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Paper Abstract

A novel approach is presented for the location of discrete targets images with subpixel accuracy. It can be adopted as first stage of any method that uses planar and no-planar grids with circular, square or cross shaped targets in order to calibrate close range cameras. The approach has been performed on several calibration sessions each of them followed by the three-dimensional reconstruction of a reference object that was previously measured through a coordinate measuring machine. The performance of the proposed approach has been expressed in terms of deviation between the reference coordinates and the corresponding ones provided by triangulation. The results obtained have also been compared with those achieved through ShapeCaptureTM, a software widely used in photogrammetry for camera calibration and 3D model reconstruction from images.

Paper Details

Date Published: 29 January 2007
PDF: 8 pages
Proc. SPIE 6491, Videometrics IX, 649110 (29 January 2007); doi: 10.1117/12.704224
Show Author Affiliations
R. Anchini, Univ. of Salerno (Italy)
J. A. Beraldin, National Research Council Canada (Canada)
C. Liguori, Univ. of Salerno (Italy)

Published in SPIE Proceedings Vol. 6491:
Videometrics IX
J.-Angelo Beraldin; Fabio Remondino; Mark R. Shortis, Editor(s)

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