Open AccessPerformance of intensity-based non-normalized pointwise algorithms in dynamic speckle analysis
Author(s) -
Elena Stoykova,
Dimazarova,
Nataliya Berberova,
Atanas Gotchev
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.025128
Subject(s) - speckle pattern , pointwise , metrology , optics , algorithm , histogram , speckle noise , computer science , speckle imaging , intensity (physics) , artificial intelligence , computer vision , mathematics , physics , image (mathematics) , mathematical analysis
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.