Superresolution with the focused plenoptic camera

Todor Georgiev; Georgi Chunev; Andrew Lumsdaine

doi:10.1117/12.872666

7 February 2011 Superresolution with the focused plenoptic camera

Todor Georgiev, Georgi Chunev, Andrew Lumsdaine

Author Affiliations +

Proceedings Volume 7873, Computational Imaging IX; 78730X (2011) https://doi.org/10.1117/12.872666
Event: IS&T/SPIE Electronic Imaging, 2011, San Francisco Airport, California, United States

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.

Citation Download Citation

Todor Georgiev, Georgi Chunev, and Andrew Lumsdaine "Superresolution with the focused plenoptic camera", Proc. SPIE 7873, Computational Imaging IX, 78730X (7 February 2011); https://doi.org/10.1117/12.872666

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