摘要
在研究了Chunked LOD算法的基础上,针对原始数据分辨率不足或视点距离地面非常近时,缺乏增强方案来满足视觉连续性需求这一问题,以规则格网为处理单元,提出了实时增加细节的改进方案。结合并改进了Kobbelt细分算法和分形技术,可以实时地添加富有真实感的高分辨率网格,避免了因过多细节增强引起的计算负荷。根据这一改进进行了实验,实验结果表明,该方法在保持帧速连续的基础上,能实时有效地增加细节,满足逼真视效的需求。
Based on the research of Chunked LOD algorithm, an idea, aiming at proposing a solution of enhancing details, is raised when the viewpoint reaches the bottom of LOD hierarchy or the origin resolution of terrain is insufficient to meet the re quirement of visualization, using RSG as its processing unit, which integrates the advantages of Kobbelt Algorithm and Fractals, allowing addition of high resolution meshes in real time and avoiding overload caused by too many details. Result of experiment shows that, while keeping frame rate steady and constant, this method can effectively work and meet the requirements.
出处
《计算机工程与设计》
CSCD
北大核心
2014年第2期578-582,共5页
Computer Engineering and Design
关键词
细节层次
规则网格
实时添加细节
细分曲面
分形地形
LOD
regular grid
real-time addition of details
subdivision surface
fractal terrain
