研究目的
To investigate the feasibility of using near-infrared hyperspectral imaging techniques to identify related hybrid okra seeds, select optimal characteristic wavelengths, build optimal discrimination models, and visualize the classification results.
研究成果
Near-infrared hyperspectral imaging technology combined with chemometrics can effectively identify hybrid okra seeds. The SVM model based on CARS algorithm showed the best performance with a recognition rate over 94.83%. The method provides a rapid and non-destructive approach for seed classification in agricultural breeding.
研究不足
The study focused on a limited number of okra seed varieties. The classification accuracy could be affected by the quality of hyperspectral image segmentation and resolution.
1:Experimental Design and Method Selection:
Near-infrared hyperspectral imaging technology combined with chemometrics was used. PCA, PLS-DA, and SVM were applied for data analysis.
2:Sample Selection and Data Sources:
1740 okra seeds of three different varieties were collected. Samples were divided into calibration and prediction sets in a 2:1 ratio.
3:List of Experimental Equipment and Materials:
Hyperspectral imaging system including an imaging spectrograph, CCD camera, tungsten halogen lamps, and a mobile platform.
4:Experimental Procedures and Operational Workflow:
Hyperspectral images were acquired, corrected, and processed to extract spectral information. Characteristic wavelengths were selected using SPA and CARS algorithms.
5:Data Analysis Methods:
PCA was used for initial data exploration. PLS-DA and SVM models were developed for classification based on full spectrum and characteristic wavelengths.
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