A Calculation of Multiple Scattering Using Scattering Maps and an Efficient Method for Rendering Sky
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- Iwasaki Kei
- Graduate School of Frontier Sciences, The University of Tokyo
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- Yanagita Tetsuichi
- Graduate School of Frontier Sciences, The University of Tokyo
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- Dobashi Yoshinori
- Graduate School of Information Science and Technology, Hokkaido University
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- Nishita Tomoyuki
- Graduate School of Frontier Sciences, The University of Tokyo
Bibliographic Information
- Other Title
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- 散乱マップを用いた多重散乱の計算と空の色の高速表示法
- サンラン マップ オ モチイタ タジュウ サンラン ノ ケイサン ト ソラ ノ イロ ノ コウソク ヒョウジホウ
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Description
The sky color is indispensable for the display of natural scenes in computer graphics. To render the photorealistic images of the sky, the calculation taking into account multiple scattering is necessary. However the calculation is so complex that enormous computational cost is required. Therefore, in this paper, we proposed a method using virtual shells (sampling shells) generated in the atmosphere. In the method, the illumination distribution of the scattering of light on the virtual shells is considered as a texture map called scattering maps. This makes it possible to calculate the sky color efficiently by using graphics hardware. Furthermore, we also propose a calculation and rendering method using the singular value decomposition to display the sky quickly with a little memory when the height of the viewpoint and the sun altitude change.
Journal
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- The Journal of the Institute of Image Electronics Engineers of Japan
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The Journal of the Institute of Image Electronics Engineers of Japan 33 (4B), 515-522, 2004
The Institute of Image Electronics Engineers of Japan
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Details 詳細情報について
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- CRID
- 1390001204610230528
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- NII Article ID
- 10013587761
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- NII Book ID
- AN00041650
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- ISSN
- 13480316
- 02859831
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- NDL BIB ID
- 7113726
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed