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基于計(jì)算機(jī)視覺(jué)的葡萄莖直徑高精度測(cè)量方法
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Measurement of Grape Stem Diameter Based on Computer Vision
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    提出了基于計(jì)算機(jī)視覺(jué)的葡萄莖直徑測(cè)量方法，采用雙邊濾波降低圖像噪聲，通過(guò)Otsu閾值分割和BloB分析實(shí)現(xiàn)葡萄莖與背景的分離，應(yīng)用基于特征點(diǎn)的定位方法得到莖直徑測(cè)量位置，由莖直徑所包含像素?cái)?shù)和尺寸當(dāng)量計(jì)算出莖直徑值，從而實(shí)現(xiàn)莖直徑連續(xù)測(cè)量。實(shí)驗(yàn)和現(xiàn)場(chǎng)應(yīng)用表明，系統(tǒng)測(cè)量重復(fù)精度可達(dá)±

    Abstract:

    0.5μm。For non-contact and high accurate measurement of grape stem diameter, a method based on computer vision was proposed. Bilateral filtering was implemented for smoothing original grayscale images. Furthermore, the grape stem was extracted from the background by Otsu and BloB analysis. According to the localized feature point, the position of stem diameter was determined. Then the stem diameter was calculated by the pixel size coefficient and the pixels of the stem diameter. Consequently, continuous stem diameter measurement was achieved. Field applications and experimental results show that the repeatability accuracy of the system achieves ±0.5 μm. 

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曾慶兵,劉成良,苗玉彬,王世平,黃丹楓.基于計(jì)算機(jī)視覺(jué)的葡萄莖直徑高精度測(cè)量方法[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(12):182-185. Measurement of Grape Stem Diameter Based on Computer Vision[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(12):182-185.

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