实时地形渲染的细节增强算法研究  

Detail Enhancement Algorithm of Real-time Terrain Rendering

作　　者：王宇[1] 李松维[1] 齐丽君[1] 任佳阅[1] 

机构地区：[1]空军航空大学军事仿真技术研究所,吉林长春130022

出　　处：《信息安全与通信保密》2014年第6期95-99,共5页Information Security and Communications Privacy

摘　　要：浏览多分辨率细节层次地形,当视点距离地面非常近,达到最高分辨率时,地形无法继续细化,影响浏览的连续性和视觉效果。针对这一问题,文中在应用Chunked LOD算法构建地形的基础上,以规则格网为处理单元,结合并改进了Kobbelt细分算法和分形技术,提出了实时细节增强的改进方案。该方案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。根据这一改进所做的实验结果表明,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。In the browsing of multi-resolution LOD terrain, when the viewpoint is very close to the terrain and reaches the highest resolution, the terrain refinement cannot be continued, and this would affect the browsing continuity be and visual effects. To solve this problem, based on the application of Chunked LOD in constructing the terrain,with RSG as the processing unit, and in combination with and by improving the Kobhelt subdivision algorithm and fractal technology, the modified scheme of real-time detail enhancement The is proposed. This scheme an add in real time the high-resolution grid rich in reality sense, and avoid the computational load resulted from excessive detail enhancement. Experimental results show that this method can effectively increase details in real-time while maintaining continuous frame rate, and thus could meet the demand for realistic visual effects.

关 键 词：细节层次 实时细节增强 细分曲面 分形地形 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]