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Article

Complementing Digital Image Analysis and Laser Distance Meter in Beer Foam Stability Determination

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Faculty of Food Technology, Josip Juraj Strossmayer University of Osijek, F. Kuhača 18, 31000 Osijek, Croatia
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Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, Josip Juraj Strossmayer University of Osijek, Kneza Trpimira 2B, 31000 Osijek, Croatia
*
Authors to whom correspondence should be addressed.
Academic Editor: Bernard Chen
Fermentation 2021, 7(3), 113; https://doi.org/10.3390/fermentation7030113
Received: 28 May 2021 / Revised: 8 July 2021 / Accepted: 12 July 2021 / Published: 14 July 2021
(This article belongs to the Special Issue Machine Learning in Fermented Food and Beverages)
The aim of this research is to investigate the possibility of applying a laser distance meter (LDM) as a complementary measurement method to image analysis during beer foam stability monitoring. The basic optical property of foam, i.e., its high reflectivity, is the main reason for using LDM. LDM measurements provide relatively precise information on foam height, even in the presence of lacing, and provide information as to when foam is no longer visible on the surface of the beer. Sixteen different commercially available lager beers were subjected to analysis. A camera and LDM display recorded the foam behavior; the LDM display which was placed close to the monitored beer glass. Measurements obtained by the image analysis of videos provided by the visual camera were comparable to those obtained independently by LDM. However, due to lacing, image analysis could not accurately detect foam disappearance. On the other hand, LDM measurements accurately detected the moment of foam disappearance since the measurements would have significantly higher values due to multiple reflections in the glass. View Full-Text
Keywords: image analysis; laser distance meter; beer foam image analysis; laser distance meter; beer foam
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MDPI and ACS Style

Habschied, K.; Glavaš, H.; Nyarko, E.K.; Mastanjević, K. Complementing Digital Image Analysis and Laser Distance Meter in Beer Foam Stability Determination. Fermentation 2021, 7, 113. https://doi.org/10.3390/fermentation7030113

AMA Style

Habschied K, Glavaš H, Nyarko EK, Mastanjević K. Complementing Digital Image Analysis and Laser Distance Meter in Beer Foam Stability Determination. Fermentation. 2021; 7(3):113. https://doi.org/10.3390/fermentation7030113

Chicago/Turabian Style

Habschied, Kristina, Hrvoje Glavaš, Emmanuel K. Nyarko, and Krešimir Mastanjević. 2021. "Complementing Digital Image Analysis and Laser Distance Meter in Beer Foam Stability Determination" Fermentation 7, no. 3: 113. https://doi.org/10.3390/fermentation7030113

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