title: Representing the light field in finite three-dimensional spaces from sparse discrete samples.
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.
authors.affiliation: Faculty of Industrial Design Engineering, Delft University of Technology, Landbergstraat 15, 2628CE Delft, The Netherlands. a.muryy@tudelft.nl
authors.forename: Alexander A
authors.initials: AA
authors.lastname: Mury
authors.forename: Sylvia C
authors.initials: SC
authors.lastname: Pont
authors.forename: Jan J
authors.initials: JJ
authors.lastname: Koenderink