Real-time rendering of approximate caustics under environment illumination

We present a real-time GPU caustics rendering technique for dynamic scenes under environment illumination taking into account light occlusion. The dynamic scenes consist of caustic objects (reflective and/or refractive objects which produce caustics) and receiver objects (non-reflective and non-refr...

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Main Authors: Tandianus, Budianto, Johan, Henry, Seah, Hock Soon
Other Authors: School of Computer Engineering
Format: Article
Language:English
Published: 2013
Subjects:
Online Access:https://hdl.handle.net/10356/99546
http://hdl.handle.net/10220/16221
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-995462020-05-28T07:18:45Z Real-time rendering of approximate caustics under environment illumination Tandianus, Budianto Johan, Henry Seah, Hock Soon School of Computer Engineering DRNTU::Engineering::Computer science and engineering We present a real-time GPU caustics rendering technique for dynamic scenes under environment illumination taking into account light occlusion. The dynamic scenes consist of caustic objects (reflective and/or refractive objects which produce caustics) and receiver objects (non-reflective and non-refractive), that can be translated and rotated. As the light source, we consider environment illumination (distant lights from all directions) which we approximate as a set of important directional lights. Our rendering technique is able to generate approximate caustics (cast on receiver objects) as well as volumetric caustics. As the preprocessing, we precompute the caustic patterns of caustic objects for several directional lights and store them in caustic images. During the rendering, we interpolate the precomputed caustic patterns based on the important directional lights which approximate the given environment illumination. The important directional lights are obtained by using our proposed environment cube map segmentation technique. Our proposed technique is able to generate real-time caustics which are visually similar to the caustic generated by using a commercial renderer mental ray. 2013-10-03T02:08:13Z 2019-12-06T20:08:34Z 2013-10-03T02:08:13Z 2019-12-06T20:08:34Z 2011 2011 Journal Article Tandianus, B., Johan, H., & Seah, H. S. (2011). Real-time rendering of approximate caustics under environment illumination. Entertainment computing, 3(4), 129-141. https://hdl.handle.net/10356/99546 http://hdl.handle.net/10220/16221 10.1016/j.entcom.2011.11.004 en Entertainment computing
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Computer science and engineering
spellingShingle DRNTU::Engineering::Computer science and engineering
Tandianus, Budianto
Johan, Henry
Seah, Hock Soon
Real-time rendering of approximate caustics under environment illumination
description We present a real-time GPU caustics rendering technique for dynamic scenes under environment illumination taking into account light occlusion. The dynamic scenes consist of caustic objects (reflective and/or refractive objects which produce caustics) and receiver objects (non-reflective and non-refractive), that can be translated and rotated. As the light source, we consider environment illumination (distant lights from all directions) which we approximate as a set of important directional lights. Our rendering technique is able to generate approximate caustics (cast on receiver objects) as well as volumetric caustics. As the preprocessing, we precompute the caustic patterns of caustic objects for several directional lights and store them in caustic images. During the rendering, we interpolate the precomputed caustic patterns based on the important directional lights which approximate the given environment illumination. The important directional lights are obtained by using our proposed environment cube map segmentation technique. Our proposed technique is able to generate real-time caustics which are visually similar to the caustic generated by using a commercial renderer mental ray.
author2 School of Computer Engineering
author_facet School of Computer Engineering
Tandianus, Budianto
Johan, Henry
Seah, Hock Soon
format Article
author Tandianus, Budianto
Johan, Henry
Seah, Hock Soon
author_sort Tandianus, Budianto
title Real-time rendering of approximate caustics under environment illumination
title_short Real-time rendering of approximate caustics under environment illumination
title_full Real-time rendering of approximate caustics under environment illumination
title_fullStr Real-time rendering of approximate caustics under environment illumination
title_full_unstemmed Real-time rendering of approximate caustics under environment illumination
title_sort real-time rendering of approximate caustics under environment illumination
publishDate 2013
url https://hdl.handle.net/10356/99546
http://hdl.handle.net/10220/16221
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