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基于GPU的网格模型平滑阴影的实时绘制 被引量：3

GPU Based Real-Time Shadow Smoothing of Mesh Surfaces
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摘要 为了绘制边界平滑的阴影效果,增强虚拟场景的真实感,提出一种基于GPU的平滑阴影实时绘制的算法.该算法通过重新定义阴影轮廓线得到网格模型上的精确阴影轮廓边界,利用阴影体算法获得边界平滑的阴影区域;阴影轮廓线的计算生成及阴影区域的绘制等过程利用GPU进行加速,可以实时绘制物体的阴影区域.实验结果表明,文中算法生成的阴影边界比已有算法更加平滑,并且在效率方面强于其他算法. In order to draw smooth shadow and enhance the reality in virtual scene,we present a GPU based real-time method to realize shadow smoothing of coarse meshes.We compute the accurate silhouette of the mesh by redefining the shadow silhouette.Then we apply the shadow volume method to get the shadow region with smooth contour.We utilize GPU to accelerate the process of computing the silhouette and the rendering of shadow.The experiment results show that our method has better effect and the rendering speed is superior to the existing methods as well.
作者 屠建军 王璐 屠长河 孟祥旭
机构地区 山东大学计算机科学与技术学院
出处 《计算机辅助设计与图形学学报》 EI CSCD 北大核心 2011年第1期138-143,151,共7页 Journal of Computer-Aided Design & Computer Graphics
基金 国家自然科学基金(60970046 61003149) 山东省自然科学重点基金(ZR2009GZ002 ZR2010FQ001) 山东大学自主创新基金(2009JC013) 国家"九七三"高技术研究发展计划项目(2006CB303100) 中国博士后科学基金(20090461221) 山东省博士后创新项目专项资金(200902032)
关键词 GPU 阴影平滑 几何着色器 阴影体 GPU shadow smoothing geometry shader shadow volume
分类号 TP399 [自动化与计算机技术—计算机应用技术]
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参考文献14

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二级参考文献28

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共引文献28

同被引文献35

  • 1刘列明,吴恩华.一种基于点光源的三维阴影的实时生成算法[J].软件学报,2000,11(6):785-790. 被引量：8
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引证文献3

二级引证文献7

计算机辅助设计与图形学学报
2011年 第1期

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