基于高光谱成像技术的苹果内外品质同时检测
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“十一五”国家科技支撑计划资助项目(2006BAD11A12-11)和国家农业智能装备工程技术研究中心开放课题资助项目


Simultaneous Detection of External and Internal Quality Parameters of Apples Using Hyperspectral Technology
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    摘要:

    结合高光谱图像处理和光谱分析方法,通过一次图像扫描同时对苹果的表面摔伤和糖分含量进行检测。苹果第一主成分图像与794nm的图像相减后进行去噪和阈值分割处理,摔伤检测的准确率为92.6%。对感兴趣区域的反射光谱曲线进行多元散射校正、一阶导数和SG平滑处理后利用偏最小二乘回归方法建立糖分含量的预测模型,校正集相关系数Rc为0.93,SEC为0.47°Brix,验证集相关系数Rv为0.92,SEV 为0.67°Brix。结果表明:利用高光谱成像技术可以实现苹果内部品质和外部品质的同时检测。

    Abstract:

    The hyperspectral imaging technology was used to detect the bruises and solid soluble content (SSC) of apples simultaneously. The image at 794nm from the first principle component was subtracted, the series of denoising and threshold processing were performed and the bruises on apples were predicted with the accuracy of 92.6%. In the hyperspectral imaging, region of interest (ROI) was determined and spectrum reference curve was calculated. The original reflectance spectrum curve was processed by multiplicative scatter correction (MSC), a first derivative and Savitzky-Golay (SG) smoothing, and PLSR model was developed to predict SSC with Rc of 0.93, SEC of 0.47°Brix, and Rv of 0.92, SEV of 0.67°Brix. The research showed that it was feasible to detect the SSC and bruises on apples simultaneously with hyperspectral imaging technology.

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单佳佳,彭彦昆,王伟,李永玉,吴建虎,张雷蕾.基于高光谱成像技术的苹果内外品质同时检测[J].农业机械学报,2011,42(3):140-144.

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