射线追踪体密度

Proceedings of the 11th annual conference on Computer graphics and interactive techniques Pub Date : 1984-01-01 DOI:10.1145/800031.808594

J. Kajiya, B. V. Herzen

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引用次数: 1155

摘要

本文提出了一种新的算法来跟踪由体积网格内密度表示的物体，例如云、雾、火焰、灰尘、粒子系统。我们建立了光散射方程，讨论了以前的求解方法，并提出了适合于计算机图形学的全三维辐射散射问题的一种新的近似解。此外，我们回顾了用于制作动画电影的云的动力学模型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Ray tracing volume densities

This paper presents new algorithms to trace objects represented by densities within a volume grid, e.g. clouds, fog, flames, dust, particle systems. We develop the light scattering equations, discuss previous methods of solution, and present a new approximate solution to the full three-dimensional radiative scattering problem suitable for use in computer graphics. Additionally we review dynamical models for clouds used to make an animated movie.

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Proceedings of the 11th annual conference on Computer graphics and interactive techniques

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