%0 Journal Article
%T Real Time Smoke Shadow Simulation Based on Direct Projection and Diffusion<br>基于直接投射扩散的烟雾阴影实时模拟
%A ZHAN Yong-song
%A YANG Ming-hao
%A SHI Min-yong
%A FEI Guang-zheng
%A <br>湛永松
%A 杨明浩
%A 石民勇
%A 费广正
%J 中国图象图形学报
%D 2008
%I 
%X To improve the realistic effect of smoke simulation,a real time smoke shadow simulation algorithm based on direct projection and diffusion is proposed.Firstly,the 3D smoke density field is directly projected to a 2D plane and accumulated into a light buffer to generate a texture which describes the shadow energy.Then,diffusion is used as a novel energy spread scheme to deal with the shadow excessive accumulation induced by direct projection.Finally,the shadow texture is mapped to a corresponding surface in 3D scene by projective texture based on programmable graphics hardware.Experiment results show that the algorithm is efficient,simple and effective to achieve real time smoke shadow for 3D computer games and animation.
%K shadow texture
%K direct projection and diffusion
%K excessive accumulation
%K projective texture
%K smoke shadow<br>阴影纹理
%K 直接投射扩散
%K 过估计
%K 投影纹理映射
%K 烟雾阴影
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=9100E064F41E6C402743F7A3C9A5858F&yid=67289AFF6305E306&vid=FC0714F8D2EB605D&iid=708DD6B15D2464E8&sid=531DED06424ADE72&eid=5EDF06FA535B7C76&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=0&reference_num=11