發(fā)布時(shí)間：2018-04-14 02:38

  本文選題：圖像處理 + 光譜��； 參考：《農(nóng)業(yè)工程學(xué)報(bào)》2017年09期

【摘要】：為實(shí)現(xiàn)去囊衣帶芯橘瓣的機(jī)器視覺分選,給去囊衣帶芯橘瓣的機(jī)器識(shí)別提供直接、準(zhǔn)確的判別信號(hào),采用熒光分光光度計(jì)對(duì)50顆去囊衣帶芯橘瓣的橘芯和砂囊分別進(jìn)行三維熒光光譜掃描,通過(guò)對(duì)橘芯、砂囊平均三維熒光光譜分析,確定了橘芯相對(duì)砂囊的特征熒光信號(hào),據(jù)此對(duì)帶芯橘瓣熒光圖像識(shí)別的可行性進(jìn)行了驗(yàn)證。檢測(cè)發(fā)現(xiàn),在370~390 nm紫外光激發(fā)下,橘芯和砂囊在440 nm處的熒光強(qiáng)度差異較大;橘芯與砂囊在370 nm紫外光激發(fā)下,440 nm處熒光強(qiáng)度分布的箱線圖表明兩者熒光強(qiáng)度分布存在明顯差異,且以橘芯在440 nm處熒光強(qiáng)度的下四分位數(shù)(Q1)與砂囊在440 nm處熒光強(qiáng)度的上四分位數(shù)(Q3)的平均值作為分類標(biāo)準(zhǔn),去囊衣帶芯橘瓣檢出準(zhǔn)確率可達(dá)85%。對(duì)(370±2)nm激發(fā)下得到的單色(440±5)nm熒光圖像進(jìn)行二值化及形態(tài)學(xué)處理后,可在以砂囊為背景的橘瓣圖形中顯現(xiàn)橘芯亮斑。利用橘芯與砂囊的熒光特性差異進(jìn)行機(jī)器視覺成像分析,可作為識(shí)別去囊衣帶芯橘瓣的一種有效方法。
[Abstract]:In order to realize the machine vision sorting of the tangerine flap, it provides a direct and accurate discriminant signal for the machine recognition of the tangerine flap.A fluorescence spectrometer was used to scan 50 tangerine cores and sand sacs with a cored orange flap. The characteristic fluorescence signals of orange core relative to sand sac were determined by analyzing the average three dimensional fluorescence spectrum of orange core and sand sac.Based on this, the feasibility of fluorescence image recognition of orange flap with core is verified.It was found that the fluorescence intensity of orange core and sand sac was different at 440 nm under the excitation of 370 ~ 390nm ultraviolet light.The box diagram of fluorescence intensity distribution at 440 nm between orange core and sand sac under the excitation of 370 nm ultraviolet light shows that there is a significant difference in fluorescence intensity distribution between them.Using the average value of the lower quartile of fluorescence intensity at 440 nm and the upper quartile of fluorescence intensity of sand sac at 440 nm as the classification standard, the detection accuracy of the orange flap with the core of removing the capsule can reach 85%.After binarization and morphological processing of the monochromatic 5)nm fluorescence images excited by 370鹵 2)nm, the orange core bright spots can be seen in the orange flaps with sand sac as the background.The difference of fluorescence characteristics between orange core and sand sac is analyzed by machine vision imaging, which can be used as an effective method to identify orange flaps with core.
【作者單位】： 中國(guó)農(nóng)業(yè)大學(xué)工學(xué)院;匯川盛業(yè)技術(shù)(北京)有限公司;
【基金】：國(guó)家重點(diǎn)研發(fā)計(jì)劃(2016YFD0400305)
【分類號(hào)】：TP391.41;TS295.6

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