Real-time information recombination of complex 3D tree model based on visual perception
Real-time information recombination of complex 3D tree model based on visual perception
复制标题
基于视觉感知的复杂3D树模型实时信息重组
DOI：
10.1007/s11432-013-4990-7
复制
发表时间：
2013-09-01
影响因子：
8.8
通讯作者：
Ji Lei
中科院分区：
文献类型：
--
作者：
Fan Jing;Fan YunYi;Ji Lei
模型数据的动态简化和重组是大规模森林场景快速可视化的关键。为了保持树木模型的几何特征和视觉感知，提出了一种基于视觉感知的复杂三维树木模型的实时信息重组方法。该方法利用视觉注意模型和树结构的视觉特性，采用基于几何和基于图像的方法对树模型进行简化，构建混合表示模型。混合表示模型反映了三维树模型的视觉感知特性，能够体现动态仿真中的拓扑语义。此外，该方法基于视觉感知自动提取三维树木模型的表示信息，并根据虚拟场景的动态视点，对模型信息进行真实的实时重组。最后，将该方法应用于不同树木模型的简化，并与现有的树木模型简化方法进行了比较。实验结果表明，该方法不仅能较好地保持三维树木模型的视觉效果，而且能有效地减少森林场景的几何数据，提高森林场景的绘制效率。
It is important for the rapid visualization of large scale forest scene to dynamically simplify and recombine model data. In order to preserve the geometric features and visual perception of tree model, this paper presents a real-time information recombination method of complex 3D tree model based on visual perception. This method adopts visual attention model and the visual characteristic of tree structures, and then uses geometry-based and image-based methods to simplify tree models and construct a hybrid representation model. The hybrid representation model reflects the visual perception features of 3D tree models that can embody topological semantics in dynamic simulation. In addition, this method automatically extracts the representation information of 3D tree model based on visual perception, and recombines model information in real time according to the dynamic viewpoint of virtual scene. Finally, this method is applied in the simplification of different tree models, and it is compared with the existing tree model simplification methods. Experimental results show that this method can not only preserve better visual perception for 3D tree models, but also effectively decrease the geometric data of forest scene, and improve the rendering efficiency of forest scene.