Signal Feature Extraction Using Granular Computing. Comparative Analysis with Frequency and Time Descriptors Applied to Dynamic Laser Speckle Patterns

DOI

10.1080/18756891.2015.1129589How to use a DOI?

Keywords

Biospeckle, dynamic speckle simulation, rough-fuzzy sets

Abstract

The laser dynamic speckle is a phenomenon caused by the fluctuant interference of the laser light reflected from an illuminated surface where some kind of activity is taking place. Signals generated by the intensity changes in each pixel through the sequence are processed with the finality of identifying underlying activity in each point. In this work we compare the performance of a Rough Fuzzy Granular Descriptor (previously published) against a set of dynamic speckle descriptors based in time and frequency processing. To perform this evaluation a numerical simulation is proposed to explore their linearity, robustness, sensitivity related to the samples quantity, as well as also by their computing time. Also the robustness to inhomogeneous spatial intensity was evaluated in an experiment performed with the illuminated surface of an actual biological object.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - JOUR
AU  - Ana L. Dai Pra
AU  - Lucia I. Passoni
AU  - G. Hernan Sendra
AU  - Marcelo Trivi
AU  - Hector J. Rabal
PY  - 2015
DA  - 2015/12/01
TI  - Signal Feature Extraction Using Granular Computing. Comparative Analysis with Frequency and Time Descriptors Applied to Dynamic Laser Speckle Patterns
JO  - International Journal of Computational Intelligence Systems
SP  - 28
EP  - 40
VL  - 8
IS  - Supplement 2
SN  - 1875-6883
UR  - https://doi.org/10.1080/18756891.2015.1129589
DO  - 10.1080/18756891.2015.1129589
ID  - DaiPra2015
ER  -