NDLI: The Analysis of Global Illumination Rendering Based on BRDF

Content Provider	IEEE Xplore Digital Library
Author	Wei Wang Hong-yan Zhang
Copyright Year	2010
Abstract	The Bi-directional Re¿ectance Distribution Function (BRDF) describes the appearance of a material by its interaction with light at a surface point. When the materials in scene are invariant, a linear transformation occurs in the transmission change from lighting to outgoing radiance, which makes a real-time global illumination rendering achieved. However, such linear transformation does not hold when materials change. This paper presents a real-time rendering algorithm for scenes with editable materials under direct and indirect illumination. All materials in scenes are represented as various linear combinations of the BRDF base, from which, all outgoing radiance luminance of each combination are pre-computed. When it renders, linear combines the pre-computed data by the coefficient resulted from different materials projection on the base, the nonlinear problem is converted to a linear one, and the final effects of global illumination rendering in real-time can be achieved.
Starting Page	332
Ending Page	335
File Size	305503
Page Count	4
File Format	PDF
ISBN	9780769540115
e-ISBN	9781424465989
DOI	10.1109/NSWCTC.2010.83
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-04-24
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	BRDF Light sources Reflectivity Graphics Layout Lighting Bidirectional control Dynamic Materials graphics processing unit Rendering (computer graphics) Global Illumination Optical reflection Optical refraction Distribution functions
Content Type	Text
Resource Type	Article

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