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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 19 — Jul. 1, 2013
  • pp: 4515–4526

Characterization of a compressive imaging system using laboratory and natural light scenes

Stephen J. Olivas, Yaron Rachlin, Lydia Gu, Brian Gardiner, Robin Dawson, Juha-Pekka Laine, and Joseph E. Ford  »View Author Affiliations


Applied Optics, Vol. 52, Issue 19, pp. 4515-4526 (2013)
http://dx.doi.org/10.1364/AO.52.004515


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Abstract

Compressive imagers acquire images, or other optical scene information, by a series of spatially filtered intensity measurements, where the total number of measurements required depends on the desired image quality. Compressive imaging (CI) offers a versatile approach to optical sensing which can improve size, weight, and performance (SWaP) for multispectral imaging or feature-based optical sensing. Here we report the first (to our knowledge) systematic performance comparison of a CI system to a conventional focal plane imager for binary, grayscale, and natural light (visible color and infrared) scenes. We generate 1024×1024 images from a range of measurements (0.1%–100%) acquired using digital (Hadamard), grayscale (discrete cosine transform), and random (Noiselet) CI basis sets. Comparing the outcome of the compressive images to conventionally acquired images, each made using 1% of full sampling, we conclude that the Hadamard Transform offered the best performance and yielded images with comparable aesthetic quality and slightly higher spatial resolution than conventionally acquired images.

© 2013 Optical Society of America

OCIS Codes
(100.0100) Image processing : Image processing
(110.0110) Imaging systems : Imaging systems
(110.1758) Imaging systems : Computational imaging

ToC Category:
Imaging Systems

History
Original Manuscript: February 28, 2013
Revised Manuscript: May 1, 2013
Manuscript Accepted: May 19, 2013
Published: June 25, 2013

Citation
Stephen J. Olivas, Yaron Rachlin, Lydia Gu, Brian Gardiner, Robin Dawson, Juha-Pekka Laine, and Joseph E. Ford, "Characterization of a compressive imaging system using laboratory and natural light scenes," Appl. Opt. 52, 4515-4526 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-19-4515

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