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20 October 1997 Characterization of generic light sources
Warren M. Krueger
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Proceedings Volume 3168, Vision Geometry VI; (1997) https://doi.org/10.1117/12.279670
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States
Abstract
The purpose of this note is to describe the degenerate critical point behavior of illumination functions as function of light direction and to use this description to characterize the set of light source directions whose image intensities have no degenerate critical points. A relationship, the accidental axis theorem, between certain degeneracies and the intrinsic geometry of the scene is established.
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Warren M. Krueger "Characterization of generic light sources", Proc. SPIE 3168, Vision Geometry VI, (20 October 1997); https://doi.org/10.1117/12.279670
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KEYWORDS
Light sources
Light
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