数字农科院2.0

Research on Innovative Apple Grading Technology Driven by Intelligent Vision and Machine Learning

文献类型： 外文期刊

作者： Bo Han;Jingjing Zhang;Rolla Almodfer;Yingchao Wang;Wei Sun;Tao Bai;Luan Dong;Wenjing Hou

作者机构：

关键词： apple;artificial intelligence;image segmentation;machine learning;model compression;quality grading;stem detection;structural re-parameterization

期刊名称： Foods

ISSN： 2304-8158

年卷期： 2025 年 14 卷 2 期

页码：

收录情况： SCIE（2025版）

摘要： In the domain of food science, apple grading holds significant research value and application potential. Currently, apple grading predominantly relies on manual methods, which present challenges such as low production efficiency and high subjectivity. This study marks the first integration of advanced computer vision, image processing, and machine learning technologies to design an innovative automated apple grading system. The system aims to reduce human interference and enhance grading efficiency and accuracy. A lightweight detection algorithm, FDNet-p, was developed to capture stem features, and a strategy for auxiliary positioning was designed for image acquisition. An improved DPC-AWKNN segmentation algorithm is proposed for segmenting the apple body. Image processing techniques are employed to extract apple features, such as color, shape, and diameter, culminating in the development of an intelligent apple grading model using the GBDT algorithm. Experimental results demonstrate that, in stem detection tasks, the lightweight FDNet-p model exhibits superior performance compared to various detection models, achieving an mAP@0.5 of 96.6%, with a GFLOPs of 3.4 and a model size of just 2.5 MB. In apple grading experiments, the GBDT grading model achieved the best comprehensive performance among classification models, with weighted Jacard Score, Precision, Recall, and F1 Score values of 0.9506, 0.9196, 0.9683, and 0.9513, respectively. The proposed stem detection and apple body classification models provide innovative solutions for detection and classification tasks in automated fruit grading, offering a comprehensive and replicable research framework for standardizing image processing and feature extraction for apples and similar spherical fruit bodies.

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