Measures of similarity and detection of miniature foreign bodies in packaged foods

Foreign bodies (FB) or particles submersed in food containers constitute a hazard and quality assurance issue for many food manufacturers. Ultrasound has demonstrated potential for detecting relatively large FBs in packaged foods. In the case of miniature FBs, the ultrasound signal goes through mini...

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Bibliographic Details
Published in:Food research international Vol. 40; no. 6; pp. 742 - 747
Main Authors: Yang, P., Zhao, B., Basir, O.A., Mittal, G.S.
Format: Journal Article
Language:English
Published: Oxford Elsevier Ltd 01.07.2007
Elsevier
Subjects:
Biological and medical sciences
contaminants
detection
food contamination
Food industries
food packaging
Foreign body detection
Fundamental and applied biological sciences. Psychology
General aspects
glass
mathematical models
Methods of analysis, processing and quality control, regulation, standards
nondestructive methods
Nondestructive testing
Object detection
packaging materials
particles
Similarity measure
steel
ultrasonics
ultrasonography
Ultrasound
Foreign body detection
Similarity measure
Nondestructive testing
Ultrasound
Object detection
Analysis method
Control method
Detection
Body
Food
ISSN:0963-9969, 1873-7145
Online Access:Get full text
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Summary:Foreign bodies (FB) or particles submersed in food containers constitute a hazard and quality assurance issue for many food manufacturers. Ultrasound has demonstrated potential for detecting relatively large FBs in packaged foods. In the case of miniature FBs, the ultrasound signal goes through minimal phase and amplitude change, and as a result, small FBs may end up undetected. Similarity measures were used to capture the minute changes of the ultrasound signals during FB detection. Three measures in the investigation were Minkowski, Chebychev, and Cityblock metrics. The sensitivity of the three measures was evaluated in capturing minute signal changes with numerical signals, whose changes are quantitatively controlled. The experiments were conducted to detect small steel particles in a glass container. The Minkowski metric showed numerically and experimentally better FB detection capabilities. Two signal alignment algorithms were introduced to minimize the impact of signal misalignment on similarity analysis.
Bibliography:http://dx.doi.org/10.1016/j.foodres.2007.01.008
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ISSN:0963-9969
1873-7145
DOI:10.1016/j.foodres.2007.01.008