ML Anthology

Spatially Varying Illumination: A Computational Model of Converging and Diverging Sources

Michael S. Langer, Steven W. Zucker
ECCV 1994 pp. 227-232
doi:10.1007/BFB0028356 /eccv/1994/langer1994eccv-spatially/

Abstract

There are three reasons for illumination to vary within a scene. First, a light source may be visible from some surfaces but not from others. Second, because of linear perspective, the shape and size of a finite source may be different when viewed from different points in a scene. Third, the brightness of a source may be non-uniform. These variations are captured by a new computational model of spatially varying illumination. Two types of source are described: a distant hemispheric source such as the sky in which light converges onto a scene, and a proximal source such as a lamp in which light diverges into a scene. Either type of source may have a non-uniform brightness function. We show how to render surfaces using this model, and how to compute shape from shading under it.

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Text

Langer and Zucker. "Spatially Varying Illumination: A Computational Model of Converging and Diverging Sources." European Conference on Computer Vision, 1994. doi:10.1007/BFB0028356

Markdown

[Langer and Zucker. "Spatially Varying Illumination: A Computational Model of Converging and Diverging Sources." European Conference on Computer Vision, 1994.](https://mlanthology.org/eccv/1994/langer1994eccv-spatially/) doi:10.1007/BFB0028356

BibTeX

@inproceedings{langer1994eccv-spatially,
  title     = {{Spatially Varying Illumination: A Computational Model of Converging and Diverging Sources}},
  author    = {Langer, Michael S. and Zucker, Steven W.},
  booktitle = {European Conference on Computer Vision},
  year      = {1994},
  pages     = {227-232},
  doi       = {10.1007/BFB0028356},
  url       = {https://mlanthology.org/eccv/1994/langer1994eccv-spatially/}
}