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Light Field

  • Reference work entry
  • First Online:
Computer Vision

  • 346 Accesses

Synonyms

Image-based rendering (IBR)

Related Concepts

Lumigraph; Plenoptic Function; Radiance

Definition

The light field is a function that describes the amount of light in radiance along light rays traveling in every direction through every point in empty space.

Background

The term light field was coined in a paper by A. Gershun [6] for studying surface illumination with artificial lightings. A similar concept was introduced to the computer graphics community as the light field in [8] and lumigraph in [7]. The motivation is to render new views or images of objects or scenes from densely sampled images previously taken to avoid building or capturing complicated 3D models. Light field or lumigraph rendering is a special representation of image-based rendering (IBR), and they require either no geometry [8] or limited geometry in terms of depth maps [7]. The light field and lumigraph are also four dimension (4D) simplification of the plenoptic function for static scenes.

Theory

In...

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References

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Author information

Authors and Affiliations

  1. Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, China

    Shing Chow Chan

Authors
  1. Shing Chow Chan
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Editor information

Editors and Affiliations

  1. Institute of Industrial Science, The University of Tokyo, Tokyo, Japan

    Katsushi Ikeuchi

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© 2014 Springer Science+Business Media New York

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Cite this entry

Chan, S.C. (2014). Light Field. In: Ikeuchi, K. (eds) Computer Vision. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-31439-6_5

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