Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/36928
Title: Light intensity independence during dynamic laser speckle analysis
Keywords: Biospeckle
Paint drying
Co-occurrence matrix
Issue Date: 1-May-2016
Publisher: Elsevier
Citation: REIS, R. O.; RABAL, H. J.; BRAGA, R. A. Light intensity independence during dynamic laser speckle analysis. Optics Communications, [S.l.], v. 366, p. 185-193, May 2016. DOI: 10.1016/j.optcom.2015.12.062.
Abstract: We explore some different normalizations of current dynamic laser speckle activity measures searching for their performance with respect to the illumination inhomogeneity of the samples. Inertia Moment and Average Value of Differences of the co-occurrence matrix are compared using a paint-drying case study on a uniform sample where attenuation in a portion of the illuminated area is introduced using a neutral density filter. In this way, all environmental conditions being equal but non-uniform illumination permits the comparison on a better approximation to objectivity. The results presented show that it is possible to mitigate the effects of the illumination in the activities measured by the dynamic laser speckle.
URI: https://www.sciencedirect.com/science/article/pii/S0030401815303965
http://repositorio.ufla.br/jspui/handle/1/36928
Appears in Collections:DEG - Artigos publicados em periódicos

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