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Proceedings Paper

Computer aided techniques to support speckle laser experimental setup and online vision
Author(s): Roberto A. Braga Jr.; Robson P. Godinho; José Roberto A. Nozela; Michel M. Silva
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Paper Abstract

The use of dynamic speckle laser, also called biospeckle laser (BSL), presents a series of challenges to its adoption, as it is the case for its use in real time, and when ones desires to adjust the experimental setup. The technical analysis of the BSL adopted in real time has reduced spatial resolution of the captured image, while the adjustment of preparing an experiment still demands the trial of a specialist. In this work two approaches have been proposed to improve the efficiency of BSL real-time adjustments to support the experimental setup. The use of the method known as Motion History Image (MHI) was carry out over a series of BSL images. The MHI was the basis for the implementation of a graphical interface for real-time identification of areas of activity, and then delimiting the regions of interest. The results showed that the MHI was effective in the reproduction of the activities of speckle patterns in real time without reducing image resolution, and as an instrument for delimit of regions of activity, supporting the analyst in the choice of lighting adjustments and image assembling.

Paper Details

Date Published: 11 September 2012
PDF: 6 pages
Proc. SPIE 8413, Speckle 2012: V International Conference on Speckle Metrology, 84131E (11 September 2012); doi: 10.1117/12.977949
Show Author Affiliations
Roberto A. Braga Jr., Univ. Federal de Lavras (Brazil)
Robson P. Godinho, Univ. Federal de Lavras (Brazil)
José Roberto A. Nozela, Univ. Federal de Lavras (Brazil)
Michel M. Silva, Univ. Federal de Lavras (Brazil)

Published in SPIE Proceedings Vol. 8413:
Speckle 2012: V International Conference on Speckle Metrology
Ángel Fernandez Doval; Cristina Trillo, Editor(s)

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