Pears Internal Quality Inspection Based on X-Ray Imaging and Multi-Criteria Decision Fusion Model

Zeqing Yang, Jiahui Zhang, Zhimeng Li, Ning Hu () and Zhengpan Qi
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Zeqing Yang: School of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, China
Jiahui Zhang: School of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, China
Zhimeng Li: School of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, China
Ning Hu: School of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, China
Zhengpan Qi: School of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, China

Agriculture, 2025, vol. 15, issue 12, 1-25

Abstract: Pears are susceptible to internal defects during growth and post-harvest handling, compromising their quality and market value. Traditional detection methods, such as manual inspection and physicochemical analysis, face limitations in efficiency, objectivity, and non-destructiveness. To address these challenges, this study investigates a non-destructive approach integrating X-ray imaging and multi-criteria decision (MCD) theory for non-destructive internal defect detection in pears. Internal defects were identified by analyzing grayscale variations in X-ray images. The proposed method combines manual feature-based classifiers, including Local Binary Pattern (LBP) and Histogram of Oriented Gradients (HOG), with a deep convolutional neural network (DCNN) model within an MCD-based fusion framework. Experimental results demonstrated that the fused model achieved a detection accuracy of 97.1%, significantly outperforming individual classifiers. This approach effectively reduced misclassification caused by structural similarities in X-ray images. The study confirms the efficacy of X-ray imaging coupled with multi-classifier fusion for accurate and non-destructive internal quality evaluation of pears, offering practical value for fruit grading and post-harvest management in the pear industry.

Keywords: X-ray; multi-criteria decision; deep convolutional neural network; internal quality inspection (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2025
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