基于IFS的荷叶叶脉纹理算法

The Algorithm for Lotus Leaf Vein Pattern Based on IFS

结合植物形态学与计算机图形学,以分形理论为基础,对植物重要器官叶片的叶脉纹理进行研究.荷叶叶脉呈发散状,有很强的自相似性,具备分形特征.通过对荷叶叶脉属性的观测统计,总结出荷叶叶脉的形态规律.根据统计结果得出荷叶叶脉结构的IFS码,以线为初始单位并扩展到荷叶的面结构,用三次参数样条曲线绘制叶边缘轮廓,实现了对荷叶叶脉的较为形象的模拟.结果表明此算法比通常的算法更适用于具有分叉结构的叶脉纹理的绘制.

Combining the plant morphology and the computer graphics, based on the fractal theory, the vein pattern of plant leaf is studied which is the important organ of the plant. The leaf veins pattern of lotus is dispersed, which has a strong self-similarity with fractal charac- teristics. By observing and statistics of the properties of lotus leaf vein, the law of the lotus leaf vein patterns is summed up. According to the resuhs of the statistics, the IFS code of the lotus leaf vein pattern is obtained. Using the line as the initial units and extending to the surface structure of lotus leaf, the outline of the edge with cubic parametric spline curves is drawn. Basically, the image of the lotus leaf vein pattern can be simulated.