一种优化的投影网格海面实时绘制方法  

Optimized Ocean Real-time Rendering Method Based on Projection Grid

作　　者：王艳芬[1] 郭栋梁[2] 聂俊岚[2] 杨莹[3] 

机构地区：[1]燕山大学信息科学与工程学院,河北秦皇岛066004 [2]燕山大学河北省计算机虚拟技术与系统集成重点实验室,河北秦皇岛066004 [3]燕山大学里仁学院,河北秦皇岛066004

出　　处：《小型微型计算机系统》2014年第7期1647-1650,共4页Journal of Chinese Computer Systems

基　　金：国家"八六三"高技术研究发展计划项目资助;河北省高等学校科学技术研究重点项目(ZH2012016)资助;河北省自然科学基金项目(F2013203099)资助;秦皇岛市科学技术研究与发展计划项目(201302A012)资助;燕山大学青年教师自主研究计划课题理工B类(13LGB016)资助

摘　　要：针对投影网格模型屏幕网格填充命中率低及网格自适应性差的问题,对投影网格海面实时绘制方法进行了优化.对辅助相机视域参数的设定引入近裁剪面相关,使得辅助视锥体更为紧致,从而增加屏幕网格填充命中率.对投影网格模型首次引入GPU Tessellation技术,使得基于屏幕空间的网格自适应更为精化,缓解细节丢失现象.实验结果表明本文方法生成的海面屏幕网格填充命中率约78%,绘制效果更逼真.For Projective Grid model,screen mesh filling ratio is low and mesh adaptive is poor. In this paper,the surface projection grid real-time rendering method was optimized. The set of assisted vision camera parameters were based on near clip plane. Then,the auxiliary cone was more compact. Screen mesh filling ratio was increased. GPU tessellation technology was used on PG model for the first time. Adaptive meshes were more refinement based on screen space. Detail missing was reduced. Experimental results show that the ration of ocean screen grid filling is about 78%,rendering effect is more vivid.

关 键 词：海面 实时绘制 视域参数 网格自适应精化 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]