CIOP   05384
CENTRO DE INVESTIGACIONES OPTICAS
Unidad Ejecutora - UE
artículos
Título:
Light intensity independence during dynamic laser speckle analysis
Autor/es:
ROBERTO BRAGA; HÉCTOR RABAL; RENAN OLIVEIRA REIS
Revista:
OPTICS COMMUNICATIONS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2016 vol. 366 p. 185 - 193
ISSN:
0030-4018
Resumen:
We explore some different normalizations of current dynamic laser speckle activity measures searching for their performance with respect t o the illumination inhomogeneity of the samples.Inertia Moment and AverageValue of Differences of theco-occurrence matrix ar e compared using a paint-drying case study on a uniform sample where attenuation in a portion of the illuminated areas introduced using a neutral density filter.In this way,all environmental conditions being equal but non-uniform illumination permits thecomparison on a better approximation to objectivity.The results presented show that it is possible to mitigate the effects of the illumination in theactivities measured by thedynamic laser speckle.