A new approach for construction and rendering of dynamic light shaft

被引：4
作者：
Li, Sheng [1 ,2 ,3 ]
Wang, Guoping [1 ,2 ,3 ]
Wu, Enhua [4 ]
机构：
[1] Peking Univ, Minist Educ, Key Lab Machine Percept, Beijing 100871, Peoples R China
[2] Peking Univ, HCI, Beijing 100871, Peoples R China
[3] Peking Univ, Multimedia Lab, Beijing 100871, Peoples R China
[4] Univ Macau, Dept Comp & Informat Sci, Taipa, Peoples R China
来源：
COMPUTERS & GRAPHICS-UK | 2008年 / 32卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Shaft volume; Shadow; Atmospheric scattering; GPU;
D O I：
10.1016/j.cag.2008.09.011
中图分类号：
TP31 [计算机软件];
学科分类号：
081202 ; 0835 ;
摘要：
Due to high computational expense of simulating the physical model of atmospheric effect, rendering realistic natural light phenomena in real time is a challenging work. in this paper, we present a new approach for dynamic light shaft construction and rendering. Unified volumes construction is proposed for both dynamic light shaft and shadow, which is embedded into an efficient method of rendering natural light shafts with atmospheric scattering. We present the analytic formula of scattering computation without numerical integration and its implementation on current GPU. Our approach can simulate not only the lighting effect with single light source but also multiple parallel light sources according to the physical model of skylight and sunlight. (c) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：660 / 668
页数：9
相关论文
共 20 条
[1]  
CHAN E, 2004, EUR S REND, P185
[2]  
Chen JJ, 2006, ADV INF SYST SCI, V1, P9
[3]  
CROW F, 1977, COMPUT GRAPH, V11, P242
[4]  
DIEFENBACH PJ, 1996, THESIS U PENNSYLVANI
[5]   Interactive rendering method for displaying shafts of light [J].
Dobashi, Y ;
Yamamoto, T ;
Nishita, T .
EIGHTH PACIFIC CONFERENCE ON COMPUTER GRAPHICS AND APPLICATIONS, PROCEEDINGS, 2000, :31-+
[6]  
DOBASHI Y, 2002, P C GRAPH HARDW, P98
[7]  
Heidmann T., 1991, IRIS UNIVERSE, V18, P28
[8]  
HOFFMAN N, 2002, GAM DEV C
[9]  
IRWIN J, 1996, P 14 ANN EUR UK C, V1, P103
[10]   Modeling and rendering of the atmosphere using Mie-scattering [J].
Jackel, D ;
Walter, B .
COMPUTER GRAPHICS FORUM, 1997, 16 (04) :201-210
12