Soft Shadow Rendering Using Spherical Reparameterization Scheme

摘要：

Rendering realistic soft shadow under all-frequency lighting environment is receiving more and more attention in recent years. 2D Haar wavelet has been recognized superior at approximation of all-frequency signals such as very keen-edged shadows. Nevertheless, rotating scene objects efficiently under wavelet basis has yet remained a troublesome problem. In this paper, we present a spherical reparameterization scheme under which spherical functions, as lighting, BRDF and visibility, are mapped onto the spherical polar coordinates. Rotating scene objects can thus be eased by a single linear transformation in our approach. Furthermore, a technique for efficiently projecting visibility is proposed. To accelerate shadow computation, we make full use of the computational resources of modern graphical hardware to perform our algorithm.

作者: Lingchun Li Xubo Yang Shuangjiu Xiao

作者单位: Shanghai Jiao Tong University,School of Software,Digital Art Lab

会议类型: 国际会议

会议名称: The First IEEE International Conference on Ubi-Media Coputing and Workshops(第一届泛媒体处理国际会议)

会议地点: 兰州

会议语种:英文

在线出版日期: 2008-07-15（万方平台首次上网日期，不代表论文的发表时间）