Multiaperture imaging

Premchandra M. Shankar, William C. Hasenplaugh, Rick L. Morrison, Ronald A. Stack, Mark A Neifeld

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We study the reconstruction of a high-resolution image from multiple low-resolution images by using a nonlinear iterative backprojection algorithm. We exploit diversities in the imaging channels, namely, the number of imagers, magnification, position, rotation, and fill factor, to undo the degradation caused by the optical blur, pixel blur, and additive noise. We quantify the improvements gained by these diversities in the reconstruction process and discuss the trade-off among system parameters. As an example, for a system in which the pixel size is matched to the diffraction-limited optical blur size at a moderate detector noise level, we can reduce the reconstruction root-mean-square error by 570% by using 16 cameras and a large amount of diversity. The algorithm was implemented on a 56 camera array specifically constructed to demonstrate the resolution-enhancement capabilities. Practical issues associated with building and operating this device are presented and analyzed.

Original languageEnglish (US)
Pages (from-to)2871-2883
Number of pages13
JournalApplied Optics
Volume45
Issue number13
DOIs
StatePublished - May 1 2006

Fingerprint

Image resolution
Pixels
Cameras
Imaging techniques
Additive noise
pixels
cameras
Image sensors
Mean square error
root-mean-square errors
Diffraction
image resolution
Detectors
magnification
Degradation
degradation
augmentation
high resolution
detectors
diffraction

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Shankar, P. M., Hasenplaugh, W. C., Morrison, R. L., Stack, R. A., & Neifeld, M. A. (2006). Multiaperture imaging. Applied Optics, 45(13), 2871-2883. https://doi.org/10.1364/AO.45.002871

Multiaperture imaging. / Shankar, Premchandra M.; Hasenplaugh, William C.; Morrison, Rick L.; Stack, Ronald A.; Neifeld, Mark A.

In: Applied Optics, Vol. 45, No. 13, 01.05.2006, p. 2871-2883.

Research output: Contribution to journalArticle

Shankar, PM, Hasenplaugh, WC, Morrison, RL, Stack, RA & Neifeld, MA 2006, 'Multiaperture imaging', Applied Optics, vol. 45, no. 13, pp. 2871-2883. https://doi.org/10.1364/AO.45.002871
Shankar PM, Hasenplaugh WC, Morrison RL, Stack RA, Neifeld MA. Multiaperture imaging. Applied Optics. 2006 May 1;45(13):2871-2883. https://doi.org/10.1364/AO.45.002871
Shankar, Premchandra M. ; Hasenplaugh, William C. ; Morrison, Rick L. ; Stack, Ronald A. ; Neifeld, Mark A. / Multiaperture imaging. In: Applied Optics. 2006 ; Vol. 45, No. 13. pp. 2871-2883.
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