摘要
针对地形场景信息多通道绘制,可提高地形场景的绘图质量。在进行地形场景信息多通道绘制时,常出现分块场景边界缝隙,需要通过定位可视区域和视点位置,细化地形场景进行消除,但传统方法通过对大规模地形场景进行地理测绘实现绘制,但是不能通过定位可视区域和视点位置,细化地形场景进行消除,在地形场景信息多通道绘制时,数据冗余度过大、绘制时间长,降低了地形场景绘制的效果。提出一种基于分块的地形场景信息多通道优化绘制方法,通过分块策略对地形进行数据加载和分割处理,定位可视区域和视点位置,细化地形场景,消除分块场景边界缝隙,提高计算效率和数据的调度速度,利用相邻帧的相关性改善绘制速度,对数据进行预取和实时装载,最终实现对地形场景信息的多通道优化绘制。仿真结果表明,提出的方法高效可行,提高了绘制时间、速度及数据量,为绘制真实性提供理论依据。
It can improve the drawing quality of terrain scene to make muhi-channel drawing aiming at terrain scene information. There is the boundary crack of block scene. Therefore, the drawing needs to refine the terrain scene through locate the visual area and viewpoint location to eliminate the boundary crack. However, traditional method makes geographical mapping through large scale of terrain scene to achieve the drawing. It cannot refine the terrain scene through locate the visual area and viewpoint location to eliminate the boundary crack. There is huge data redundancy and long drawing time during the multi-channel drawing of terrain scene information. Therefore, it reduces the drawing effect of terrain scene. In this paper, a multi-channel optimization drawing method of terrain scene information based on the segmentation is proposed. Firstly, the terrain data are loaded and segmented through the segmentation strategy. Then, the visual area and viewpoint location are located, and the terrain scene is refined to eliminate the boundary crack of block scene. Moreover, the computational efficiency and data scheduling speed are improved, and the correlation of consecutive frame is used to improve the drawing speed. Finally, the data are pre- fetched and loaded in real time, and the multi-channel optimization drawing of terrain scene information is achieved. The simulation results show that the method mentioned above is efficient and feasible. It improves the drawing time, speed, and data volume. It also provides the theoretical foundation for the drawing facticity.
出处
《计算机仿真》
北大核心
2017年第1期202-204,210,共4页
Computer Simulation
关键词
分块
三维绘制
相邻帧
Block
3 D rendering
Adjacent frame
