A comprehensive geometrical optics application for wave rendering

ISCAS OpenIR

	A comprehensive geometrical optics application for wave rendering
	Wu, Fu-Kun (1); Zheng, Chang-Wen (1); Zheng, C.-W.(cwzheng@ieee.org)
	2013
发表期刊	Graphical Models
ISSN	15240703
卷号	75 期号:6 页码:318-327
摘要	This paper presents a novel method to model wave effects in a ray tracer which attempts to account for the attenuation, scattering and absorption of light affected by participating media along rays. Inspired by diffraction shaders (DS), we propose an extension of this model to construct a new Bidirectional Reflectance Distribution Function (BRDF) to simultaneously take into consideration the phase and amplitude variation of light. The new method can simulate diffraction effects of a variety of materials, where we introduce the Fresnel factor and a microfacet scattering metric which affect the absorption and geometrical attenuation of photons. Incorporating Wigner Distribution Function (WDF), our method is further extended to model interference effects after multiple bounces by deferring the phase calculation. An acceleration algorithm is also implemented to real-time model diffraction effects of different apertures. We demonstrate the validity of our method by generating wave patterns for diverse scenes. © 2013 Elsevier Inc. All rights reserved.; This paper presents a novel method to model wave effects in a ray tracer which attempts to account for the attenuation, scattering and absorption of light affected by participating media along rays. Inspired by diffraction shaders (DS), we propose an extension of this model to construct a new Bidirectional Reflectance Distribution Function (BRDF) to simultaneously take into consideration the phase and amplitude variation of light. The new method can simulate diffraction effects of a variety of materials, where we introduce the Fresnel factor and a microfacet scattering metric which affect the absorption and geometrical attenuation of photons. Incorporating Wigner Distribution Function (WDF), our method is further extended to model interference effects after multiple bounces by deferring the phase calculation. An acceleration algorithm is also implemented to real-time model diffraction effects of different apertures. We demonstrate the validity of our method by generating wave patterns for diverse scenes. © 2013 Elsevier Inc. All rights reserved.
收录类别	EI
部门归属	(1) Science and Technology on Integrated Information System Laboratory, Institute of Software, Beijing, China; (2) University of Chinese Academy of Sciences, Beijing, China
语种	英语
WOS记录号	WOS:000327107100026
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
内容类型	期刊论文
URI标识	http://ir.iscas.ac.cn/handle/311060/17042
专题	中国科学院软件研究所
通讯作者	Zheng, C.-W.(cwzheng@ieee.org)
推荐引用方式 GB/T 7714	Wu, Fu-Kun ,Zheng, Chang-Wen ,Zheng, C.-W.. A comprehensive geometrical optics application for wave rendering[J]. Graphical Models,2013,75(6):318-327.
APA	Wu, Fu-Kun ,Zheng, Chang-Wen ,&Zheng, C.-W..(2013).A comprehensive geometrical optics application for wave rendering.Graphical Models,75(6),318-327.
MLA	Wu, Fu-Kun ,et al."A comprehensive geometrical optics application for wave rendering".Graphical Models 75.6(2013):318-327.