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基于高光譜成像技術(shù)的蘋果內(nèi)外品質(zhì)同時檢測
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“十一五”國家科技支撐計劃資助項(xiàng)目(2006BAD11A12-11)和國家農(nóng)業(yè)智能裝備工程技術(shù)研究中心開放課題資助項(xiàng)目


Simultaneous Detection of External and Internal Quality Parameters of Apples Using Hyperspectral Technology
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    結(jié)合高光譜圖像處理和光譜分析方法,通過一次圖像掃描同時對蘋果的表面摔傷和糖分含量進(jìn)行檢測。蘋果第一主成分圖像與794nm的圖像相減后進(jìn)行去噪和閾值分割處理,摔傷檢測的準(zhǔn)確率為92.6%。對感興趣區(qū)域的反射光譜曲線進(jìn)行多元散射校正、一階導(dǎo)數(shù)和SG平滑處理后利用偏最小二乘回歸方法建立糖分含量的預(yù)測模型,校正集相關(guān)系數(shù)Rc為0.93,SEC為0.47°Brix,驗(yàn)證集相關(guān)系數(shù)Rv為0.92,SEV 為0.67°Brix。結(jié)果表明:利用高光譜成像技術(shù)可以實(shí)現(xiàn)蘋果內(nèi)部品質(zhì)和外部品質(zhì)的同時檢測。

    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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單佳佳,彭彥昆,王偉,李永玉,吳建虎,張雷蕾.基于高光譜成像技術(shù)的蘋果內(nèi)外品質(zhì)同時檢測[J].農(nóng)業(yè)機(jī)械學(xué)報,2011,42(3):140-144. Shan Jiajia, Peng Yankun, Wang Wei, Li Yongyu, Wu Jianhu, Zhang Leilei. Simultaneous Detection of External and Internal Quality Parameters of Apples Using Hyperspectral Technology[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(3):140-144.

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