Research of tobacco grading based on outline feature

doi:10.3778/j.issn.1002-8331.2009.26.071

Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (26): 236-239.DOI: 10.3778/j.issn.1002-8331.2009.26.071

• 工程与应用 • Previous Articles Next Articles

Research of tobacco grading based on outline feature

LI Cui-ying，HE Li-yuan，MA Wen-jie，LIU Hua-bo，HUANG Wei

College of Resources and Environment，Huazhong Agricultural University，Wuhan 430070，China

Received:2008-05-15 Revised:2008-08-15 Online:2009-09-11 Published:2009-09-11
Contact: LI Cui-ying

采用轮廓特征的烟叶部位组分类研究

李翠英，贺立源，马文杰，刘华波，黄魏

华中农业大学资源与环境学院，武汉 430070

通讯作者: 李翠英

Abstract

Abstract: The two-element orthogonal polynomial arithmetic in tobacco leaf edge fitting and grading is investigated.It appears that the two-element orthogonal polynomial describes the tobacco leaf’s boundary effectively，and makes the calculation of the shape figures expedient，such as length，width，perimeter and area.Besides，it makes in variant to translation，rotation and scale.Results show that the discrimination rate reaches 92% in the experiment by using the polynomial coefficients.This method can also be used to provide suitable assistant means for tobacco auto classification.

Key words: tobacco leaf, edge fitting, orthogonal polynomial, grading, discrimination

摘要： 研究了烟叶轮廓曲线的二元正交多项式拟合算法以及拟合多项式在烟叶部位分组中的应用。发现用二元正交多项式曲线能较好地描述烟叶边缘，方便计算烟叶的长、宽、周长、面积等形状特征值，而且该多项式还具有平移、旋转和尺度不变性等特征。研究结果表明，利用该研究提出的多项式拟合系数进行烟叶部位组的判别分类效果良好，正确区分率达到92%以上，此方法可为进一步研究烟叶收购质量的自动分级提供可行的技术手段。

关键词: 烟叶, 边缘拟合, 正交多项式, 分组, Bayes判别分析

CLC Number:

TP391.41

S572

LI Cui-ying，HE Li-yuan，MA Wen-jie，LIU Hua-bo，HUANG Wei. Research of tobacco grading based on outline feature[J]. Computer Engineering and Applications, 2009, 45(26): 236-239.

李翠英，贺立源，马文杰，刘华波，黄魏. 采用轮廓特征的烟叶部位组分类研究[J]. 计算机工程与应用, 2009, 45(26): 236-239.

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Research of tobacco grading based on outline feature

采用轮廓特征的烟叶部位组分类研究

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