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Proceedings Paper

Superresolution with the focused plenoptic camera
Author(s): Todor Georgiev; Georgi Chunev; Andrew Lumsdaine
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Paper Abstract

Digital images from a CCD or CMOS sensor with a color filter array must undergo a demosaicing process to combine the separate color samples into a single color image. This interpolation process can interfere with the subsequent superresolution process. Plenoptic superresolution, which relies on precise sub-pixel sampling across captured microimages, is particularly sensitive to such resampling of the raw data. In this paper we present an approach for superresolving plenoptic images that takes place at the time of demosaicing the raw color image data. Our approach exploits the interleaving provided by typical color filter arrays (e.g., Bayer filter) to further refine plenoptic sub-pixel sampling. Our rendering algorithm treats the color channels in a plenoptic image separately, which improves final superresolution by a factor of two. With appropriate plenoptic capture we show the theoretical possibility for rendering final images at full sensor resolution.

Paper Details

Date Published: 7 February 2011
PDF: 13 pages
Proc. SPIE 7873, Computational Imaging IX, 78730X (7 February 2011); doi: 10.1117/12.872666
Show Author Affiliations
Todor Georgiev, Adobe Systems (United States)
Georgi Chunev, Indiana Univ. (United States)
Andrew Lumsdaine, Indiana Univ. (United States)

Published in SPIE Proceedings Vol. 7873:
Computational Imaging IX
Charles A. Bouman; Ilya Pollak; Patrick J. Wolfe, Editor(s)

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