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Proceedings Paper

Modified light field architecture for reconfigurable multimode imaging
Author(s): Roarke Horstmeyer; Ravindra Athale; Gary Euliss
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Paper Abstract

Light field cameras can simultaneously capture the spatial location and angular direction of light rays emanating from a scene. By placing a variable bandpass filter in the aperture of a light field camera, we demonstrate the ability to multiplex the visible spectrum over this captured angular dimension. The result is a novel design for a single-snapshot multispectral imager, with digitally reconstructed images exhibiting reduced spatial resolution proportional to the number of captured spectral channels. This paper explores the effect of this spatial-spectral resolution tradeoff on camera design. It also examines the concept of utilizing a non-uniform pinhole array to achieve varying spectral and spatial capture over the extent of the sensor. Images are presented from several different light field - variable bandpass filter designs, and limitations and sources of error are discussed.

Paper Details

Date Published: 21 August 2009
PDF: 9 pages
Proc. SPIE 7468, Adaptive Coded Aperture Imaging, Non-Imaging, and Unconventional Imaging Sensor Systems, 746804 (21 August 2009); doi: 10.1117/12.828653
Show Author Affiliations
Roarke Horstmeyer, MITRE Corp. (United States)
Ravindra Athale, MITRE Corp. (United States)
Gary Euliss, MITRE Corp. (United States)

Published in SPIE Proceedings Vol. 7468:
Adaptive Coded Aperture Imaging, Non-Imaging, and Unconventional Imaging Sensor Systems
David P. Casasent; Jean J. Dolne; Stanley Rogers; Thomas J. Karr; Victor L. Gamiz, Editor(s)

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