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Position: Home > Articles > Recognition of the Tea Sprout Based on Color and Shape Features Transactions of the Chinese Society for Agricultural Machinery 2009 (1) 119-123

基于颜色和形状特征的茶叶嫩芽识别方法

作  者：
杨福增;杨亮亮;田艳娜;杨青
单  位：
西北农林科技大学机械与电子工程学院;西北农林科技大学信息工程学院
关键词：
茶叶嫩芽;识别;颜色特征;形状特征
摘  要：
与人工采摘茶叶相比,现有采茶机械虽能提高采摘速度,但采摘时老叶、嫩叶一起采,缺乏选择性,并有部分叶片遭破损,降低了原料品质。为此,需要研究具有选择性、低损伤率的自动采摘方法。本文采用基于颜色和形状特征的图像处理方法,实现茶叶嫩芽的计算机识别和检测。针对清明期陕西名茶"午子仙豪"茶叶,首先在RGB颜色空间中提取茶叶图像的G分量,并采用双阈值方法对图像进行分割;然后根据茶叶嫩芽的形状特征,检测茶叶嫩芽的边缘。实验结果表明:基于颜色和形状特征的识别方法能有效分辨出茶叶嫩芽,识别准确率为94%,为实现茶叶嫩芽的自动采摘提供了一种有效方法。
译  名：
Recognition of the Tea Sprout Based on Color and Shape Features
作  者：
Yang Fuzeng1 Yang Liangliang1 Tian Yanna2 Yang Qing1(1.College of Mechanical & Electronic Engineering,Northwest A&F University,Yangling,Shaanxi 712100,China2.College of Information Engineering,Northwest A&F University,Yangling,Shaanxi 712100,China)
关键词：
Tea sprout,Recognition,Color feature,Shape feature
摘  要：
It is a big problem for China to have not enough workforces in picking tea sprout today,which usually result in missing the tea sprout's optimum picking period.The picking machine currently used improves the picking efficiency indeed.However,the old leaves are picked together with the sprout,and the sprout is damaged at some time.Hence it is necessary to develop an intelligent picking machine that can recognize and pick the sprout with the minimum sprout damage.This paper presents an image process method based on the tea sprout color and shape features,which was used to recognize the "Wuzi Xianhao"(a famous green tea of Shaanxi,China) tea sprout grown at Xixiang County of Shaanxi Province.Firstly,the green component of the tea leaf image in RGB color space was extracted.Secondly,green component image was segmented using double threshold method.Finally,the edge of tea sprout is detected according to its shape feature.Experimental results indicate that this recognizing method of the tea sprout based on color and shape features can reach the right detection rate of 94%,and provide an effective method for automatic tea sprout picking.

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