散景效果的真实感绘制

	散景效果的真实感绘制
	吴佳泽 ; 郑昌文 ; 胡晓惠 ; 欧阳冠军
刊名	计算机辅助设计与图形学学报
	2010
卷号	22 期号:5 页码:746-752,761
关键词	散景相机镜头模型序列光线追踪孔径形状渐晕Camera lenses Computer simulation Elementary particle sources Lenses Optical instruments Ray tracing
ISSN号	1003-9775
其他题名	realistic rendering of bokeh effects
中文摘要	针对现有方法绘制的散景效果真实感较差的问题,提出一种基于几何光学理论的散景效果真实感绘制方法.该方法以光线传播的折射定律为基础,利用序列光线追踪方法对相机镜头的光学成像特性进行精确建模;对相机镜头的内部结构进行精确模拟,包括孔径光阑和渐晕光阑,以绘制出由孔径形状和渐晕共同作用的散景效果;利用几何光学理论和序列光线追踪方法精确计算出出射光瞳的位置和大小,以辅助光线采样,提高光线追踪效率.绘制结果表明,利用该方法能够绘制出较为逼真的散景效果,正确模拟了孔径形状和渐晕对散景效果的影响,并具有较高的光线追踪效率.
学科主题	Computer Science
语种	中文
公开日期	2011-05-23
附注	This paper proposes a new high quality rendering approach of bokeh effect based on geometrical optics theory. A sequential ray tracing technique based on refraction law for transporting light, is employed to accurately model optical imaging characteristics of a camera lens; the internal structure of a camera lens is precisely simulated, including the aperture stop and the vignetting stop, in order to simulate bokeh effect influenced by both the aperture shape and the vignetting; The geometrical optics theory and sequential ray tracing method are used to accurately estimate the position and size of exit pupil in a camera lens, improving the performance of ray tracing. The results show that our method can quickly render realistic bokeh effects with faithful influences from the aperture shape and the vignetting.
内容类型	期刊论文
源URL	[http://124.16.136.157/handle/311060/10010]
专题	软件研究所_综合信息系统技术国家级重点实验室 _期刊论文
推荐引用方式 GB/T 7714	吴佳泽,郑昌文,胡晓惠,等. 散景效果的真实感绘制[J]. 计算机辅助设计与图形学学报,2010,22(5):746-752,761.
APA	吴佳泽,郑昌文,胡晓惠,&欧阳冠军.(2010).散景效果的真实感绘制.计算机辅助设计与图形学学报,22(5),746-752,761.
MLA	吴佳泽,et al."散景效果的真实感绘制".计算机辅助设计与图形学学报 22.5(2010):746-752,761.