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A light field, or lightfield, is a vector function that describes the amount of light flowing in every direction through every point in a space. The space of all possible light rays is given by the five-dimensional plenoptic function, and the magnitude of each ray is given by its radiance. Michael Faraday was the first to propose that light should be interpreted as a field, much like the magnetic fields on which he had been working.[1] The term light field was coined by Andrey Gershun in a classic 1936 paper on the radiometric properties of light in three-dimensional space.
The term "radiance field" may also be used to refer to similar, or identical [2] concepts. The term is used in modern research such as neural radiance fields
- ^ Faraday, Michael (30 April 2009). "LIV. Thoughts on ray-vibrations". Philosophical Magazine. Series 3. 28 (188): 345–350. doi:10.1080/14786444608645431. Archived from the original on 2013-02-18.
- ^ Mildenhall, Ben; Srinivasan, Pratul P; Tancik, Matthew; Barron, Jonathan T; Ramamoorthi, Ravi; Ng, Ren (2021-12-17). "NeRF: Representing Scenes as Neural Radiance Fields for View Synthesis". Communications of the ACM. 65 (1): 99–106.