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Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Transactions of the ASAE. VOL. 43(2): 453-459 . (doi: 10.13031/2013.2725) @2000
Authors:   Y. Tao, J. G. Ibarra
Keywords:   X-ray inspection, Poultry meat, Bone fragments, Food safety, Thickness compensation

Detection of bone fragments in poultry meat remains a challenge. In the industrial deboning process, bone fragments often remain in chicken fillets, escaping manual or x-ray machine detection. A new method was proposed to compensate for x-ray absorption variations, which occur due to the uneven thickness of fillets. Imaging detection algorithms were developed to integrate thickness and x-ray images and to produce a thickness-compensated x-ray image for the extraction of bone fragment signals. Plastic molds with four different slopes were designed for forming poultry meat for conceptual tests and imaging algorithm development. Experimental results from sample analyses demonstrated that the four types of frequent and hard-to-detect bone fragments could be detected no matter where they were located in chicken meat of uneven thickness. The proposed imaging method eliminated the false patterns and enhanced the sensitivity of x-ray in bone fragment detection. The technique has the potential for non-destructive internal detection of hazardous materials in food products with uneven thickness.

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