基于小波描述子的叶片轮廓几何建模

发布时间：2018-03-23 12:34

本文选题：叶片轮廓　切入点：质心坐标　出处：《计算机辅助设计与图形学学报》2011年12期

【摘要】：利用植物动漫部件组装整株植物是植物生长单帧建模的一个既简单又有效的方法,但由于植物形态的复杂性,其数据结构一般采用长度不等的链表来存储形态数值,这不但给特征点位置的设计和存储带来困难,而且影响图形显示速度.为此提出一种利用小波描述子来刻画植物器官形态的方法.以植物叶片轮廓的建模为例,先构造出刻画叶片轮廓形态的形状函数;再用周期小波级数进行逼近,从而获得个数相同的小波级数系数,可用统一长度的数组结构来存储不同种类植物的叶片轮廓.针对3种不同植物叶片轮廓的建模实验结果表明,该方法能较好地保持叶片轮廓,具有建模速度快和图形显示多分辨率等优点,且可以推广到植物其他器官轮廓和骨架的建模.
[Abstract]:It is a simple and effective method to assemble the whole plant by using the plant animation parts. However, because of the complexity of plant morphology, the data structure of the whole plant is usually stored by a list of different lengths. This not only makes the design and storage of feature points difficult, but also affects the speed of graphic display. A method of describing plant organ morphology using wavelet descriptors is proposed. The modeling of plant leaf contour is taken as an example. The shape function describing the shape of the blade contour is constructed first, and then the coefficients of the same number of wavelet series are obtained by the approximation of the periodic wavelet series. The uniform length array structure can be used to store the leaf contours of different species of plants. The results of modeling for three different plant leaf contours show that the proposed method can keep the leaf contours well. It has the advantages of fast modeling speed and multi-resolution graphical display, and can be extended to the modeling of other organ contours and skeletons of plants.
【作者单位】：华南农业大学理学院;华南农业大学农业多媒体技术研究所;
【基金】：中山大学广东省计算科学重点实验室开放基金项目(201106001) 广东省产学研科技攻关课题(2010B090400493)
【分类号】：Q94-3;TP391.41

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