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Spatial location in 360° of reference points over an object by using stereo vision

 

V. H. Flores^a, A. Martínez^a, J. A. Rayas^a, and K. Genovese^b

 

^a Centro de Investigaciones en Óptica, A.C. Apartado Postal 1-948, Leon, Gto., 37150, México.

^b School of Engineering, Universita degli Studi della Basilicata, Viale dell'Ateneo Lucano, 10-85100 Potenza, Italy.

 

Received 11 April 2012;
Accepted 12 February 2013.

 

Abstract

Stereo Vision is a powerful tool used to get a 360° scan of an object in order to obtain topography details or getting the spatial position of a given set of points of interest. However, the required computational time could be slow to perform real-time measurements. In this work we present an alternative approach based on Hering's coordinate system and the use of high reflective markers, used as reference points to track an object movement. The advantage of using these markers is that their detection is faster than a full scene correlation since it is performed by matching the position of the centroids of each marker without using any pixel-by-pixel analysis.

Keywords: Hering's coordinates; stereo vision; track markers.

PACS: 42.30.Tz; 42.40.My; 42.30.Sy.

 

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Acknowledgements

This research is part of a bilateral project sponsored by CONACYT-MAE between Mexico and Italy, reference number 146523. VHFM wants to thank to CONACYT for his scholarship.

 

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