Dynamic speckle analysis using multivariate techniques

JOSÉ M LÓPEZ-ALONSO, JAVIER ALDA; HÉCTOR RABAL, EDUARDO GRUMEL AND MARCELO TRIVI

JOURNAL OF OPTICS. A, PURE AND APPLIED OPTICS (PRINT)

IOP PUBLISHING LTD

Lugar: Londres; Año: 2015 vol. 17 p. 1 - 7

1464-4258

In this work we use principal components analysis to characterize dynamic speckle patterns. This analysis quantitatively identi!es different dynamics that could be associated to physical phenomena occurring in the sample. We also found the contribution explained by each principal component, or by a group of them. The method analyzes the paint drying process over a hidden topography. It can be used for fast screening and identi!cation of different dynamics in biological or industrial samples by means of dynamic speckle interferometry.