导数在提取植物叶片锯齿特征上的应用  

Application of derivative in feature extraction of leaf sawteeth

作　　者：赵国庆[1] 刘循[1] 王勇 严江浩[1] 王黎亮[1] 

机构地区：[1]四川大学计算机学院,成都610064 [2]中国人寿四川分公司信息技术部,成都610064

出　　处：《四川大学学报（自然科学版）》2009年第4期941-946,共6页Journal of Sichuan University(Natural Science Edition)

摘　　要：运用计算机图像处理和分析技术对植物叶片图像进行图像预处理并提取叶片的轮廓,通过分析轮廓曲线中离散像素点的导数值,获取叶形的犄角点,从而提取锯齿,为基于叶片外观特征的植物分类提供辅助.With computer-aided image processing and analyzing techniques, the experiments apply image pre-processing techniques to get the contours of the plant leaves. The authors analyze the derivative values of pixels in contour curve and then put up the method of obtaining the corners of leaf shape and extracting the features of leaf tooth. These methods will give great help for plant classification by leaf appearance features.

关 键 词：植物分类 叶片锯齿 特征提取 轮廓曲线 导数 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]