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Performance of intensity-based non-normalized pointwise algorithms in dynamic speckle analysis

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Details

Original languageEnglish
Pages (from-to)25128-25142
Number of pages15
JournalOptics Express
Volume23
Issue number19
DOIs
Publication statusPublished - 17 Sep 2015
Publication typeA1 Journal article-refereed

Abstract

Intensity-based pointwise non-normalized algorithms for 2D evaluation of activity in optical metrology with dynamic speckle analysis are studied and compared. They are applied to a temporal sequence of correlated speckle patterns formed at laser illumination of the object surface. Performance of each algorithm is assessed through the histogram of estimates it produces. A new algorithm is proposed that provides the same quality of the 2D activity map for less computational effort. The algorithms are applied both to synthetic and experimental data.

Publication forum classification

Field of science, Statistics Finland