A ray-based computational model of light sources and illumination

M. Langer, S. Zucker
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引用次数: 8

Abstract

Models of light sources and illumination are fun­ damental in physics-based vision. Light sources have traditionally been modelled as objects that emit light, while illumination has been modelled as a radiance function defined over free space. The difficulty with traditional light source models is that, while a diverse collection of models exists, each is so specific that re­lationships between them, and between the algorithms based on them, are unclear. At the other extreme, models of spatial illumination have been so general that they have not provided sufficient constraint for vision. We seek to unify these two extremes by de­ veloping a ray-based computational model of light sources and illumination. sources and illumination. The model articulates strong constraints on the geometry and radiance of light rays in a scene, and expresses the relationship between free space, sources, and illumination. Appli­ cations of this model to problems in computer vision are discussed.
光源和照明的基于光线的计算模型
光源和照明的模型在基于物理的视觉中是有趣的基础。光源传统上被建模为发光的物体,而照明被建模为在自由空间上定义的辐射函数。传统光源模型的困难在于,虽然存在各种各样的模型,但每个模型都非常具体,以至于它们之间以及基于它们的算法之间的关系都不清楚。在另一个极端,空间照明的模型已经如此普遍,他们没有提供足够的视觉约束。我们试图通过开发光源和照明的基于光线的计算模型来统一这两个极端。光源和照明。该模型明确了场景中光线的几何形状和亮度的严格限制,并表达了自由空间、光源和照明之间的关系。讨论了该模型在计算机视觉问题中的应用。
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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