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Unified Frequency Domain Analysis of Lightfield Cameras

  • Todor Georgiev
  • Chintan Intwala
  • Sevkit Babakan
  • Andrew Lumsdaine
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5304)

Abstract

This paper presents a theory that encompasses both “plenoptic” (microlens based) and “heterodyning” (mask based) cameras in a single frequency-domain mathematical formalism. Light-field capture has traditionally been analyzed using spatio-angular representation, with the exception of the frequency-domain “heterodyning” work. In this paper we interpret “heterodyning” as a general theory of multiplexing the radiance in the frequency domain. Using this interpretation, we derive a mathematical theory of recovering the 4D spatial and angular information from the multiplexed 2D frequency representation. The resulting method is applicable to all lightfield cameras, lens-based and mask-based. The generality of our approach suggests new designs for lightfield cameras. We present one such novel lightfield camera, based on a mask outside a conventional camera. Experimental results are presented for all cameras described.

Keywords

Frequency Domain Frequency Domain Analysis Bandlimited Signal Conventional Camera Camera Design 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Supplementary material

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Supplementary material (5,046 KB)

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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Todor Georgiev
    • 1
    • 2
  • Chintan Intwala
    • 1
    • 2
  • Sevkit Babakan
    • 1
    • 2
  • Andrew Lumsdaine
    • 1
    • 2
  1. 1.Adobe SystemsSan Jose, CA
  2. 2.Computer Science DepartmentIndiana UniversityBloomington, IN

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