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Optics Letters

Optics Letters


  • Vol. 36, Iss. 2 — Jan. 15, 2011
  • pp: 220–222

Optical time-domain analog pattern correlator for high-speed real-time image recognition

Sang Hyup Kim, Keisuke Goda, Ali Fard, and Bahram Jalali  »View Author Affiliations

Optics Letters, Vol. 36, Issue 2, pp. 220-222 (2011)

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The speed of image processing is limited by image acquisition circuitry. While optical pattern recognition tech niques can reduce the computational burden on digital image processing, their image correlation rates are typically low due to the use of spatial optical elements. Here we report a method that overcomes this limitation and enables fast real-time analog image recognition at a record correlation rate of 36.7 MHz —1000 times higher rates than conventional methods. This technique seamlessly performs image acquisition, correlation, and signal integration all optically in the time domain before analog-to-digital conversion by virtue of optical space-to-time mapping.

© 2011 Optical Society of America

OCIS Codes
(100.1160) Image processing : Analog optical image processing
(100.4550) Image processing : Correlators
(100.3005) Image processing : Image recognition devices

ToC Category:
Image Processing

Original Manuscript: September 17, 2010
Revised Manuscript: November 29, 2010
Manuscript Accepted: November 30, 2010
Published: January 13, 2011

Sang Hyup Kim, Keisuke Goda, Ali Fard, and Bahram Jalali, "Optical time-domain analog pattern correlator for high-speed real-time image recognition," Opt. Lett. 36, 220-222 (2011)

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