### Abstract

Current three-dimensional computer graphics assumes a vacuum space. The inclusion of atmosphere is essential for the modeling and rendering of natural phenomena. This paper presents a method of modeling atmospheric effects and rendering them using a volume tracing renderer. The model is built within a framework called the atmospheric cube. The atmospheric cube, or the A-cube, is a finite volume that encloses the three-dimensional scene to be modeled. The atmosphere is defined by particles of varying radii, which are distributed over the cube. The distribution of particles determines the density of atmosphere. The interaction of light with the atmosphere is divided into four cases to capture the characteristics of the atmospheric illumination by particles of different radii: absorption, Rayleigh scattering, Mie scattering, and geometric optics. The atmospheric equation is a combination of modeling techniques covering the four cases. To render the interaction of light with the atmosphere, we present the rendering technique called volume tracing. Examples of blue sky, sunset, hazy sky, shaft of light beam, and rainbow are given.

Original language | English |
---|---|

Pages (from-to) | 104-113 |

Number of pages | 10 |

Journal | The Visual Computer |

Volume | 7 |

Issue number | 2-3 |

DOIs | |

Publication status | Published - 1991 Mar |

Externally published | Yes |

### Fingerprint

### Keywords

- A-cube
- Rainbow
- Scattering

### ASJC Scopus subject areas

- Software
- Computer Graphics and Computer-Aided Design

### Cite this

*The Visual Computer*,

*7*(2-3), 104-113. https://doi.org/10.1007/BF01901181

**Volume tracing of atmospheric environments.** / Inakage, Masahiko.

Research output: Contribution to journal › Article

*The Visual Computer*, vol. 7, no. 2-3, pp. 104-113. https://doi.org/10.1007/BF01901181

}

TY - JOUR

T1 - Volume tracing of atmospheric environments

AU - Inakage, Masahiko

PY - 1991/3

Y1 - 1991/3

N2 - Current three-dimensional computer graphics assumes a vacuum space. The inclusion of atmosphere is essential for the modeling and rendering of natural phenomena. This paper presents a method of modeling atmospheric effects and rendering them using a volume tracing renderer. The model is built within a framework called the atmospheric cube. The atmospheric cube, or the A-cube, is a finite volume that encloses the three-dimensional scene to be modeled. The atmosphere is defined by particles of varying radii, which are distributed over the cube. The distribution of particles determines the density of atmosphere. The interaction of light with the atmosphere is divided into four cases to capture the characteristics of the atmospheric illumination by particles of different radii: absorption, Rayleigh scattering, Mie scattering, and geometric optics. The atmospheric equation is a combination of modeling techniques covering the four cases. To render the interaction of light with the atmosphere, we present the rendering technique called volume tracing. Examples of blue sky, sunset, hazy sky, shaft of light beam, and rainbow are given.

AB - Current three-dimensional computer graphics assumes a vacuum space. The inclusion of atmosphere is essential for the modeling and rendering of natural phenomena. This paper presents a method of modeling atmospheric effects and rendering them using a volume tracing renderer. The model is built within a framework called the atmospheric cube. The atmospheric cube, or the A-cube, is a finite volume that encloses the three-dimensional scene to be modeled. The atmosphere is defined by particles of varying radii, which are distributed over the cube. The distribution of particles determines the density of atmosphere. The interaction of light with the atmosphere is divided into four cases to capture the characteristics of the atmospheric illumination by particles of different radii: absorption, Rayleigh scattering, Mie scattering, and geometric optics. The atmospheric equation is a combination of modeling techniques covering the four cases. To render the interaction of light with the atmosphere, we present the rendering technique called volume tracing. Examples of blue sky, sunset, hazy sky, shaft of light beam, and rainbow are given.

KW - A-cube

KW - Rainbow

KW - Scattering

UR - http://www.scopus.com/inward/record.url?scp=0005005915&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0005005915&partnerID=8YFLogxK

U2 - 10.1007/BF01901181

DO - 10.1007/BF01901181

M3 - Article

AN - SCOPUS:0005005915

VL - 7

SP - 104

EP - 113

JO - Visual Computer

JF - Visual Computer

SN - 0178-2789

IS - 2-3

ER -