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Representing the light field in finite three-dimensional spaces from sparse discrete samples:

Authors
  • Mury, A.A.
  • Pont, S.C.
  • Koenderink, J.J.
Publication Date
Jan 12, 2009
Identifiers
DOI: 10.1364/AO.48.000450
OAI: oai:tudelft.nl:uuid:da71a378-4c27-4da0-a29b-2b874fa0af0a
Source
TU Delft Repository
Keywords
License
Unknown
External links

Abstract

We present a method for measurement and reconstruction of light fields in finite spaces. Using a custom-made device called a plenopter, we can measure spatially and directionally varying radiance distribution functions from a real-world scene up to their second-order spherical harmonics approximations. Interpolating between measurement points, we can recover this function for arbitrary points of a scene. We visualized the global structure of the light field using light tubes, which gives an intuitive description of the flux propagation throughout three-dimensional scenes and provides information about the quality of light in the scenes. Our second-order reconstructions are sufficient to render convex matte objects and therefore have a direct interest for computer graphics applications.

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