基于OSG的Speedtree植物模型绘制研究

摘要

The Speedtree graphing technology has been employed to improve the real-sense forest vegetation in visualization of the forest industry. To be detailed, the plant models from Speedtree are imported to OpenSceneGraph (OSG) three-dimensional graphing engine to realize the real sense effect Firstly, discussions have been made on features of the Speedtree plant model and its graphing methods in OSG. Secondly, discussions and research have been conducted on principles of importing Speedtree plant models into OSG. Finally, graphing of Speedtree plant models in OSG was realized with the aid of the Speedtree graphing interface. Results have shown that the introduction of Speedtree graphing technology is capable of meeting demand on plant model real-sense in visualization of the forestry industry.%针对提高林业可视化中的森林植物真实感这一核心需求,提出引入Speedtree绘制技术解决此问题,具体做法是将Speedtree的植物模型导入OpenSceneGraph(以下简称OSG)三维渲染引擎,从而提高林业可视化系统中植物模型的真实感.探讨了Speedtree植物模型的特性及其在OSG中绘制的多种方法,在此基础上,探讨并研究Speedtree植物模型导入OSG的原理,基于Speedtree渲染接口实现Speedtree植物模型在OSG中的绘制.渲染结果显示Speedtree绘制技术的引入满足了林业可视化提高植物模型真实感的需求.