为了保证森林场景可视化时的真实感,同时保持动态森林场景生成时间的恒定性,提出一种多风格融合的复杂森林场景自适应可视化方法。利用基于视距的模型分布函数来控制树木模型的分布比例,从而建立多风格融合的森林可视化模型;在此基础上,根据复杂森林场景中树木生长模型的计算时间、3维树木绘制时间的估算结果,以及树木的视觉重要性,确定生成森林场景的最佳方案。该方法能够使复杂动态森林场景的生成时间保持较好的稳定性,并且在可视化过程中根据仿真效果动态调整绘制策略。为了验证该方法的有效性和实用性,将本文方法在动态生长的森林仿真场景中进行了实验和应用。应用结果表明,多风格融合的森林场景自适应可视化方法能在保证森林场景可视化真实感的基础上,有效地提升复杂森林场景的绘制速度,使森林场景的快速漫游具有更好的稳定性和流畅性。

In order to ensure the realism of visualizing complex forest scenes and maintain the constancy of generating dynamic forest scenes, this paper presents an approach to the adaptive visualization of multi-style composition for complex forest scenes. The approach determines the mixing ratio of tree models according to model contribution functions based on the range of visibility, which establishes the multi-style composition visualization model of the forest scenes. After estimating the calculation time of the tree growth model and the rendering time of the 3D models, as well as calculating the importance of trees in the forest scenes, the best scheme is obtained to generate the forest scenes. It keeps a relatively good stability of generating forest scenes, and the rendering strategy of forest scenes is dynamically adjusted according to the simulation results. To verify the effectiveness and practicality of this approach, we applied it to the dynamic forest simulation scene. The application results show that this adaptive visualization of multi-style composition can achieve great visual reality and improve the efficiency of rendering rates roaming, which makes forest scene roaming more stable and smooth.