CIOP   05384
CENTRO DE INVESTIGACIONES OPTICAS
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Analysis of low activity in dynamic speckle patterns
Autor/es:
MARCELO GUZMÁN; GONZALO SENDRA; HECTOR RABAL; RICARDO ARIZAGA; MARCELO TRIVI
Lugar:
Munich, Alemania
Reunión:
Conferencia; Optical Metrology Conference Laser Munich 2009; 2009
Institución organizadora:
SPIE
Resumen:
In this work we present two methods to evaluate activity in low dynamic speckle patterns. The first one is based on thebehavior analysis of the vortices associated to the pattern. The other one consists in binarizing the speckle image. Thespeckle grain areas, also called islands, experiment displacements and deformations. The variations of the island featureswere analyzed with the aim of finding a correlation with the activity of the speckle pattern. Both methods were evaluatedin numerical simulations and controlled experiments. From the obtained results, it was possible to conclude that thedeveloped methods can be very useful for the analysis of low activity speckle patterns with some advantages with othermethods.