Microwave imaging has been recently proposed as alternative technology for in-line inspection of packaged products in the food industry, thanks to its non-invasiveness and the low-cost of the equipment. In this framework, simple and effective detection/imaging strategies, able to reveal the presence of foreign bodies that may have contaminated the product during the packaging stage, are needed to allow real-time and reliable detection, thus avoiding delays along the production line and limiting occurrence of false detections (either negative or positive). In this work, a novel detection/imaging approach meeting these requirements is presented. The approach performs the detection/imaging of the contaminant by exploiting the symmetries usually characterizing the food items. Such symmetries are broken by the presence of foreign bodies, thereby determining a differential signal that can be processed to reveal their presence. In so doing, the approach does not require the prior measurement of a reference, defect-free, item. With respect to the quite common case of homogeneous food packaged in circular plastic/glass jars, numerical analyses are provided to show the effectiveness of the proposed approach.

A Simple Differential Microwave Imaging Approach for In-Line Inspection of Food Products / Zeni, Noemi; Crocco, Lorenzo; Cavagnaro, Marta; Bellizzi, Gennaro. - In: SENSORS. - ISSN 1424-8220. - 23:2(2023), pp. 1-18. [10.3390/s23020779]

A Simple Differential Microwave Imaging Approach for In-Line Inspection of Food Products

Cavagnaro, Marta;
2023

Abstract

Microwave imaging has been recently proposed as alternative technology for in-line inspection of packaged products in the food industry, thanks to its non-invasiveness and the low-cost of the equipment. In this framework, simple and effective detection/imaging strategies, able to reveal the presence of foreign bodies that may have contaminated the product during the packaging stage, are needed to allow real-time and reliable detection, thus avoiding delays along the production line and limiting occurrence of false detections (either negative or positive). In this work, a novel detection/imaging approach meeting these requirements is presented. The approach performs the detection/imaging of the contaminant by exploiting the symmetries usually characterizing the food items. Such symmetries are broken by the presence of foreign bodies, thereby determining a differential signal that can be processed to reveal their presence. In so doing, the approach does not require the prior measurement of a reference, defect-free, item. With respect to the quite common case of homogeneous food packaged in circular plastic/glass jars, numerical analyses are provided to show the effectiveness of the proposed approach.
2023
detection; food inspection; food security; microwave imaging; non-invasive diagnostics
01 Pubblicazione su rivista::01a Articolo in rivista
A Simple Differential Microwave Imaging Approach for In-Line Inspection of Food Products / Zeni, Noemi; Crocco, Lorenzo; Cavagnaro, Marta; Bellizzi, Gennaro. - In: SENSORS. - ISSN 1424-8220. - 23:2(2023), pp. 1-18. [10.3390/s23020779]
File allegati a questo prodotto
File Dimensione Formato  
Zeni_A-Simple_2023-00779.pdf

accesso aperto

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Creative commons
Dimensione 5.04 MB
Formato Adobe PDF
5.04 MB Adobe PDF

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1678853
Citazioni
  • ???jsp.display-item.citation.pmc??? 1
  • Scopus 5
  • ???jsp.display-item.citation.isi??? 4
social impact