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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 37, Iss. 8 — Apr. 15, 2012
  • pp: 1361–1363

Employment of frame accumulation and shaped function for upgrading low-light-level image detection sensitivity

Gang Li, Hongying Tang, Dongsung Kim, Jean Gao, and Ling Lin  »View Author Affiliations

Optics Letters, Vol. 37, Issue 8, pp. 1361-1363 (2012)

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We demonstrate a novel method that employs a frame-accumulation and shaped-function technique to improve an image sensor’s detection sensitivity using probability statistics. It can obtain the unbiased estimate for the low-light-level image signal, thus upgrading the signal-to-noise ratio to a high degree. It was verified by an experiment in a sealed box. By the help of a variable light beam–shaped function saw-tooth signal in front of a camera, the low-light-level shadow image that was invisible to the camera could be revealed clearly from the frame accumulation data. The method can surpass an image sensor’s detection limitation.

© 2012 Optical Society of America

OCIS Codes
(040.3780) Detectors : Low light level
(100.2980) Image processing : Image enhancement

ToC Category:
Image Processing

Original Manuscript: December 6, 2011
Revised Manuscript: February 10, 2012
Manuscript Accepted: February 15, 2012
Published: April 11, 2012

Gang Li, Hongying Tang, Dongsung Kim, Jean Gao, and Ling Lin, "Employment of frame accumulation and shaped function for upgrading low-light-level image detection sensitivity," Opt. Lett. 37, 1361-1363 (2012)

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