Non-Destructive Detection of Soybean Seed Thermal Damage Based on
Hyperspectral Imaging and MSC1DCNN
TAN Ke-zhu1, SUN Wei-qi1, ZHUO Zong-hui1, LI Kai-nuo1, ZHANG Xi-hai1, 2*, YAN Chao3*
1. College of Electrical Engineering and Information, Northeast Agricultural University, Harbin 150030，China
2. National Key Laboratory of Smart Farm Technology and System, Northeast Agricultural University, Harbin 150030, China
3. College of Agriculture, Northeast Agricultural University, Harbin 150030, China
Abstract：Soybean seeds are prone to heat damage due to improper storage and transportation. Heat damage affects the seed quality and germination rate, making it crucial to accurately detect heat-damaged soybean seeds for improving seed quality and agricultural production. This paper proposes a non-destructive detection method for heat-damaged soybean seeds based on hyperspectral imaging and a Multi-scale Cross-channel One-dimensional Convolutional Neural Network (MSC1DCNN). Firstly, hyperspectral imaging systems were used to capture spectral data of soybean seeds in the 400～1 000 nm wavelength range. The spectral curves of different heat-damaged soybean seeds (normal, mild heat damage, and severe heat damage) were compared and analyzed. It was found that the spectral reflectance in the 420～500 nm blue light region and the 750～1 000 nm near-infrared region gradually increased with the degree of heat damage. These spectral variations provided effective spectral features for subsequent heat damage detection. Secondly, the MSC1DCNN model was applied for classification. The model achieved an accuracy, recall, and F1 score of 99.07% on the test set, outperforming Support Vector Classification (SVC) (F1 score of 88.32%), k-Nearest Neighbor (KNN) (F1 score of 84.39%), and One-dimensional Convolutional Neural Network (1D CNN) (F1 score of 92.90%). Notably, the MSC1DCNN model had a misclassification rate of 1.39% in distinguishing mild heat-damaged seeds from normal seeds, which was significantly lower than SVC (12.04%), KNN (15.74%), and 1D CNN (9.72%). Finally, a germination experiment was conducted to verify the effect of heat damage on the germination rate of soybean seeds. The experimental results demonstrated that heat damage significantly reduced the germination rate of soybean seeds, further confirming the potential harm of heat damage to soybean growth. In conclusion, the MSC1DCNN model proposed in this study offers an effective solution for the non-destructive detection of heat-damaged soybean seeds, providing new insights for seed quality detection and automated screening.
谭克竹，孙伟奇，卓宗慧，李凯诺，张喜海，闫 超. 基于高光谱成像和MSC1DCNN的大豆种子热损伤无损检测[J]. 光谱学与光谱分析, 2025, 45(10): 2897-2905.
TAN Ke-zhu, SUN Wei-qi, ZHUO Zong-hui, LI Kai-nuo, ZHANG Xi-hai, YAN Chao. Non-Destructive Detection of Soybean Seed Thermal Damage Based on
Hyperspectral Imaging and MSC1DCNN. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2025, 45(10): 2897-2905.
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