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Determination of the SSC in oranges using Vis-NIR full transmittance hyperspectral imaging and spectral visual coding: A practical solution to the scattering problem of inhomogeneous mixtures

文献类型： 外文期刊

作者： Cai, Letian 1 ; Li, Jiangbo 1 ; Zhang, Hailiang 3 ; Zhang, Yizhi 1 ; Zhang, Junyi 2 ; Hao, Haoyuan 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Intelligent Equipment Res Ctr, Beijing 100097, Peoples R China

2.Shihezi Univ, Coll Mech & Elect Engn, Shihezi 832003, Peoples R China

3.East China Jiaotong Univ, Coll Elect & Automat Engn, Nanchang 330013, Peoples R China

关键词： Citrus; SSC detection; Hyperspectral transmittance imaging; Spectral visual coding; Feature selection

期刊名称：FOOD CHEMISTRY （ 影响因子：9.8； 五年影响因子：9.7 ）

ISSN： 0308-8146

年卷期： 2025 年 474 卷

页码：

收录情况： SCI

摘要： The soluble solids content (SSC) is an important index for evaluating the quality of oranges. However, because of the complex internal organizational structure of oranges, different tissues may have a significant impact on the incident light, which makes it difficult to construct a high-precision and stable model for SSC prediction. In this study, full-transmittance hyperspectral imaging technology was used to collect information on the entire orange. The raw Vis-NIR hyperspectral data were encoded into GAF images and the image features were extracted using HOG operators. Finally, the optimised GAF-HOG-SVR model obtained satisfactory prediction accuracy, with a correlation coefficient of 0.927 and a root mean square error of 0.445 for the prediction set. This study demonstrates that the proposed method can effectively overcome the adverse effects of complex internal tissues in oranges on SSC prediction, providing a new approach for the accurate and stable nondestructive quality evaluation of oranges.

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