树叶长宽比及边缘曲率的提取  

The Extraction of Leaves' Aspect Ratio and Boundary Curvature

作　　者：王静[1] 李灿灿[1] 王情伟[1] 王宝[1] 李丰果[1] 

机构地区：[1]华南师范大学物理与电信工程学院,广东广州510006

出　　处：《华南师范大学学报（自然科学版）》2013年第1期38-41,共4页Journal of South China Normal University(Natural Science Edition)

基　　金：广东省教育部产学研结合项目(2007B090400135)

摘　　要：树叶的轮廓特征主要包括长宽比、面积、边缘曲率和斜率等,这些特征参数是树木分类及识别的关键.为此,利用数学形态学与像素跟踪相结合的算法分离叶柄,然后利用霍特林(Hotelling)变换获取树叶的最小外接矩形,得到树叶的长宽比.基于有限差分算法得到2种不同形态树叶的边缘曲率和树叶关键部位的特征斜率.The contour features of a leaf mainly include the aspect ratio, area, boundary curvature, and slope, which are very important to classify and recognize the tree. The mathematical morphology combined with pixel tracking algorithm is used to separate the petiole of leaves. Using the Hotelling transform, the minimum enclosing rectangles and the aspect ratios of leaves are obtained. Based on the finite - difference algorithm, the boundary slopes and curvatures of the key parts of the different leaves are also obtained.

关 键 词：图像处理 叶柄 长宽比 曲率 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]