Spectroscopy and Spectral Analysis, Volume. 45, Issue 7, 1820(2025)
Multi-Parameter Prediction of Beef Quality Based on Polarized Hyperspectral Imaging
Because the traditional method of beef quality detection has the disadvantage of destroying samples, it is impossible to carry out multiple tests on the same sample, and the operation is complicated and the test results are lagging, which is difficult to meet the needs of modern food safety detection for non-destructive and rapid response. To solve the problems of complex operation, great destructiveness, and lag of traditional detection methods, polarization hyperspectral imaging detection technology has been widely used in beef quality detection with its advantages of high precision, fast response, and non-destructiveness. This technology can capture the polarization and spectral information of light, not only has the advantages of hyperspectral imaging technology, non-destructive in-depth analysis of the internal quality of beef, at the same time, the technology introduces polarization imaging technology, can inhibit the influence of the surrounding light environment factors on the spectrum of beef, quickly obtain more accurate results, effectively avoiding the shortcomings of traditional methods. This paper used the wavelength range of 900~1 700 nm to compose a near-infrared polarization highlights like technology, combined with high polarization spectral data and a convolutional neural network, to build a more robust quality parameter prediction model for the first time. First, the hyperspectral data of beef samples were collected without polarization and at 0°, 45°, 90°, and 135° polarization angles, respectively, and the regions of interest were extracted. The samples' color parameters (L*, a*, b*) and texture parameters (hardness, adhesiveness, and cohesiveness) were collected. Secondly, the successive projections algorithmwas used to extract the samples' corresponding spectral characteristic wavelengths with unpolarization and different polarization models. Finally, multiple linear regression and convolutional neural network methods were used to construct the multi-parameter prediction model for beef quality. The results show that the prediction accuracy of multiple parameters in polarization mode is better than that without polarization, and the overall prediction effect of the CNN model at 90° polarization Angle is the best. The determination coefficients of parameters L*, a*, b*, hardness, adhesiveness, and cohesiveness were 0.882, 0.905, 0.949, 0.692, 0.671 and 0.911, and the root-mean-square errors of prediction were0.820, 0.562, 0.461, 3 889.713, 89.746, and 0.027. Compared with unpolarization, the prediction accuracy of the above 6 parameters is at least 13.1% higher, which verifies the feasibility of the convolutional neural network prediction model combined with near-infrared polarization hyperspectral imaging technology in meat nondestructive testing, and provides a new technical idea and method for further meeting the needs of modern food safety testing.
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SONG Ya-fang, BU Xiang-tao, LI Na, LI Ya-hong, LI De-yang, ZHANG Yun-cui, ZHAO Yu. Multi-Parameter Prediction of Beef Quality Based on Polarized Hyperspectral Imaging[J]. Spectroscopy and Spectral Analysis, 2025, 45(7): 1820
Received: Nov. 26, 2024
Accepted: Jul. 24, 2025
Published Online: Jul. 24, 2025
The Author Email: LI Ya-hong (liyahong@dlpu.edu.cn)