Abstract: Due to the complex morphological structure of flower, virtual plant modeling and growth simulation with leaves, petals and other organs become the key problem of virtual flower research. A common simulation method is presented for herbaceous flower morphology and plant growth simulation based on real flower image and plant ecology. By using the flower pictures and bi-cubic Bezier curved surface, it can extract flower texture details and simulate geometric features of plant organs. The whole plant can be established by using the predefined topology structure of leaves and petals. In order to simulate the plant growth, the Logistic equation theory is provided to simulate the leaf growth and flower blooming. Tulip, jasmine and other representative flowers are taken as examples to test the algorithm validity.

Key words: virtual flower, Bezier curve, plant growth model, vertex buffer object

摘要： 花卉植物形态结构复杂，叶片、花瓣等组织器官的可视化建模和生长仿真成为虚拟花卉的研究瓶颈。基于花卉图像和植物生态学，提出一种通用的草本花卉形态结构建模和生长可视化仿真算法。结合花卉图像信息和双三次Bezier曲面模拟组织器官的形态，利用定义的花卉植物拓扑结构建立单株花卉。为了忠于植物生长特性，采用Logistic方程模拟叶片和花瓣的生长过程。通过郁金香、石竹、茉莉等多种代表性草本花卉植物验证了算法的有效性，模拟的花卉逼真自然。

关键词: 虚拟花卉, Bezier曲面, 生长模型, 顶点缓存对象