A Method for Fast Rendering of Caustics from Refraction by Transparent Objects

Kei IWASAKI; Fujiichi YOSHIMOTO; Yoshinori DOBASHI; Tomoyuki NISHITA

doi:10.1093/ietisy/e88-d.5.904

A Method for Fast Rendering of Caustics from Refraction by Transparent Objects

Kei IWASAKI, Fujiichi YOSHIMOTO, Yoshinori DOBASHI, Tomoyuki NISHITA

Full Text Views

0

Cite this

Summary :

Caustics are patterns of light focused by reflective or refractive objects. Because of their visually fascinating patterns, several methods have been developed to render caustics. We propose a method for the quick rendering of caustics formed by refracted and converged light through transparent objects. First, in the preprocess, we calculate sampling rays incident on each vertex of the object, and trace the rays until they leave the object taking refraction into account. The position and direction of each ray that finally transmits the transparent object are obtained and stored in a lookup table. Next, in the rendering process, when the object is illuminated, the positions and directions of the rays leaving the object are calculated using the lookup table. This makes it possible to render refractive caustics due to transparent objects at interactive frame rates, allowing us to change the light position and direction, and translate and rotate the object.

Publication: IEICE TRANSACTIONS on Information Vol.E88-D No.5 pp.904-911

Publication Date: 2005/05/01

Publicized

Online ISSN

DOI: 10.1093/ietisy/e88-d.5.904

Type of Manuscript: Special Section PAPER (Special Section on Cyberworlds)

Category

Cite this

Copy

Kei IWASAKI, Fujiichi YOSHIMOTO, Yoshinori DOBASHI, Tomoyuki NISHITA, "A Method for Fast Rendering of Caustics from Refraction by Transparent Objects" in IEICE TRANSACTIONS on Information, vol. E88-D, no. 5, pp. 904-911, May 2005, doi: 10.1093/ietisy/e88-d.5.904.
Abstract: Caustics are patterns of light focused by reflective or refractive objects. Because of their visually fascinating patterns, several methods have been developed to render caustics. We propose a method for the quick rendering of caustics formed by refracted and converged light through transparent objects. First, in the preprocess, we calculate sampling rays incident on each vertex of the object, and trace the rays until they leave the object taking refraction into account. The position and direction of each ray that finally transmits the transparent object are obtained and stored in a lookup table. Next, in the rendering process, when the object is illuminated, the positions and directions of the rays leaving the object are calculated using the lookup table. This makes it possible to render refractive caustics due to transparent objects at interactive frame rates, allowing us to change the light position and direction, and translate and rotate the object.
URL: https://global.ieice.org/en_transactions/information/10.1093/ietisy/e88-d.5.904/_p

Copy

@ARTICLE{e88-d_5_904,
author={Kei IWASAKI, Fujiichi YOSHIMOTO, Yoshinori DOBASHI, Tomoyuki NISHITA, },
journal={IEICE TRANSACTIONS on Information},
title={A Method for Fast Rendering of Caustics from Refraction by Transparent Objects},
year={2005},
volume={E88-D},
number={5},
pages={904-911},
abstract={Caustics are patterns of light focused by reflective or refractive objects. Because of their visually fascinating patterns, several methods have been developed to render caustics. We propose a method for the quick rendering of caustics formed by refracted and converged light through transparent objects. First, in the preprocess, we calculate sampling rays incident on each vertex of the object, and trace the rays until they leave the object taking refraction into account. The position and direction of each ray that finally transmits the transparent object are obtained and stored in a lookup table. Next, in the rendering process, when the object is illuminated, the positions and directions of the rays leaving the object are calculated using the lookup table. This makes it possible to render refractive caustics due to transparent objects at interactive frame rates, allowing us to change the light position and direction, and translate and rotate the object.},
keywords={},
doi={10.1093/ietisy/e88-d.5.904},
ISSN={},
month={May},}

Copy

TY - JOUR
TI - A Method for Fast Rendering of Caustics from Refraction by Transparent Objects
T2 - IEICE TRANSACTIONS on Information
SP - 904
EP - 911
AU - Kei IWASAKI
AU - Fujiichi YOSHIMOTO
AU - Yoshinori DOBASHI
AU - Tomoyuki NISHITA
PY - 2005
DO - 10.1093/ietisy/e88-d.5.904
JO - IEICE TRANSACTIONS on Information
SN -
VL - E88-D
IS - 5
JA - IEICE TRANSACTIONS on Information
Y1 - May 2005
AB - Caustics are patterns of light focused by reflective or refractive objects. Because of their visually fascinating patterns, several methods have been developed to render caustics. We propose a method for the quick rendering of caustics formed by refracted and converged light through transparent objects. First, in the preprocess, we calculate sampling rays incident on each vertex of the object, and trace the rays until they leave the object taking refraction into account. The position and direction of each ray that finally transmits the transparent object are obtained and stored in a lookup table. Next, in the rendering process, when the object is illuminated, the positions and directions of the rays leaving the object are calculated using the lookup table. This makes it possible to render refractive caustics due to transparent objects at interactive frame rates, allowing us to change the light position and direction, and translate and rotate the object.
ER -