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Proceedings Paper

The multifocus plenoptic camera
Author(s): Todor Georgiev; Andrew Lumsdaine
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Paper Abstract

The focused plenoptic camera is based on the Lippmann sensor: an array of microlenses focused on the pixels of a conventional image sensor. This device samples the radiance, or plenoptic function, as an array of cameras with large depth of field, focused at a certain plane in front of the microlenses. For the purpose of digital refocusing (which is one of the important applications) the depth of field needs to be large, but there are fundamental optical limitations to this. The solution of the above problem is to use and array of interleaved microlenses of different focal lengths, focused at two or more different planes. In this way a focused image can be constructed at any depth of focus, and a really wide range of digital refocusing can be achieved. This paper presents our theory and results of implementing such camera. Real world images are demonstrating the extended capabilities, and limitations are discussed.

Paper Details

Date Published: 24 January 2012
PDF: 11 pages
Proc. SPIE 8299, Digital Photography VIII, 829908 (24 January 2012); doi: 10.1117/12.908667
Show Author Affiliations
Todor Georgiev, Adobe Systems Inc. (United States)
Andrew Lumsdaine, Indiana Univ. (United States)

Published in SPIE Proceedings Vol. 8299:
Digital Photography VIII
Sebastiano Battiato; Brian G. Rodricks; Nitin Sampat; Francisco H. Imai; Feng Xiao, Editor(s)

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