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Proceedings Paper

Plenoptic camera image simulation for reconstruction algorithm verification
Author(s): Jim Schwiegerling
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Paper Abstract

Plenoptic cameras have emerged in recent years as a technology for capturing light field data in a single snapshot. A conventional digital camera can be modified with the addition of a lenslet array to create a plenoptic camera. Two distinct camera forms have been proposed in the literature. The first has the camera image focused onto the lenslet array. The lenslet array is placed over the camera sensor such that each lenslet forms an image of the exit pupil onto the sensor. The second plenoptic form has the lenslet array relaying the image formed by the camera lens to the sensor. We have developed a raytracing package that can simulate images formed by a generalized version of the plenoptic camera. Several rays from each sensor pixel are traced backwards through the system to define a cone of rays emanating from the entrance pupil of the camera lens. Objects that lie within this cone are integrated to lead to a color and exposure level for that pixel. To speed processing three-dimensional objects are approximated as a series of planes at different depths. Repeating this process for each pixel in the sensor leads to a simulated plenoptic image on which different reconstruction algorithms can be tested.

Paper Details

Date Published: 12 September 2014
PDF: 6 pages
Proc. SPIE 9193, Novel Optical Systems Design and Optimization XVII, 91930V (12 September 2014); doi: 10.1117/12.2062505
Show Author Affiliations
Jim Schwiegerling, College of Optical Sciences, The Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 9193:
Novel Optical Systems Design and Optimization XVII
G. Groot Gregory; Arthur J. Davis, Editor(s)

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