Share Email Print
cover

Proceedings Paper

Monitoring of bread cooling by statistical analysis of laser speckle patterns
Author(s): Tanya Lyubenova; Elena Stoykova; Elena Nacheva; Branimir Ivanov; Ivan Panchev; Ventseslav Sainov
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The phenomenon of laser speckle can be used for detection and visualization of physical or biological activity in various objects (e.g. fruits, seeds, coatings) through statistical description of speckle dynamics. The paper presents the results of non-destructive monitoring of bread cooling by co-occurrence matrix and temporal structure function analysis of speckle patterns which have been recorded continuously within a few days. In total, 72960 and 39680 images were recorded and processed for two similar bread samples respectively. The experiments proved the expected steep decrease of activity related to the processes in the bread samples during the first several hours and revealed its oscillating character within the next few days. Characterization of activity over the bread sample surface was also obtained.

Paper Details

Date Published: 15 March 2013
PDF: 9 pages
Proc. SPIE 8770, 17th International School on Quantum Electronics: Laser Physics and Applications, 87700S (15 March 2013); doi: 10.1117/12.2013667
Show Author Affiliations
Tanya Lyubenova, Institute of Optical Materials and Technologies (Bulgaria)
Elena Stoykova, Institute of Optical Materials and Technologies (Bulgaria)
Elena Nacheva, Institute of Optical Materials and Technologies (Bulgaria)
Branimir Ivanov, Institute of Optical Materials and Technologies (Bulgaria)
Ivan Panchev, Univ. of Food Technologies (Bulgaria)
Ventseslav Sainov, Institute of Optical Materials and Technologies (Bulgaria)


Published in SPIE Proceedings Vol. 8770:
17th International School on Quantum Electronics: Laser Physics and Applications
Tanja N. Dreischuh; Albena T. Daskalova, Editor(s)

© SPIE. Terms of Use
Back to Top