(Agricultural Information Research, Japan, 15(4), 413-422, 2006)

A Study on the Detection of Jamming in Sealing Food Package by Image Processing

-- Detection of Jamming in Sealing Aluminum Package--

Kazuhiro NAKANO, Yosuke KUBOTA, Yoshihiko USUI, Katsumi HONMA and Yukari HENMI

Summary

The purpose of this study is to detect jamming in sealing aluminum package for food material. Two types of package are examined; one is unpigmented silver package and the other is orange colored. The detection algorithm developed in this study consists of the following methods: capturing image data of seal area from the package; 24bit, decomposition of RGB component; 8bit each, distinction of seal area, FFT processing, image denoising by mask operation, IFFT processing and binary conversion by the brightness threshold. The optimum brightness threshold is calculated by the discriminant analysis. The combined optimum brightness thresholds for the detection of jamming in unpigmented silver package are the brightness threshold of 15 and that of 8 using R-component of image data. The discrimination ratio of the jamming package is 100% under the above conditions. For orange colored package, the optimum the brightness threshold for detecting jamming are the brightness threshold of 28 and that of 11 using B-component of image data, then the discrimination ratio is 100%. It was showed that the detection of jamming in sealing food package is possible by the detection systems developed in this study.



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