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Optical Fractional Derivative Matched Correlator

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Abstract

We suggest a new optical matched correlator which combines the fractional derivative with the conventional correlation for application to space shift-invariant pattern recognition. This new correlator possesses the favorable feature of being able to enhance the discrimination capability and anti-interference to noise ability over that of the conventional matched spatial filter. Varying the fractional order enables one to trade off between the light efficiency and the discrimination ability of the correlator.

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Authors and Affiliations

  1. Graduate Program of Human Sensing and Functional Sensor Engineering, Graduate School of Science and Engineering, Yamagata University, 4-3-16, Johnan, Yonezawa, 992-8510, Japan

    Yan Zhang & Naohiro Tanno

  2. Institute of Physics, Academia Sinica, P. O. Box 603, Beijing, 100080, China

    Ben-Yuan Gu

  3. JSTC, Regional Joint Research Project of Yamagata Prefecture, Yamagata, 990-2473, Japan

    Naohiro Tanno

Authors
  1. Yan Zhang
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  2. Ben-Yuan Gu
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  3. Naohiro Tanno
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Correspondence to Yan Zhang.

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Zhang, Y., Gu, BY. & Tanno, N. Optical Fractional Derivative Matched Correlator. OPT REV 8, 318–322 (2001). https://doi.org/10.1007/s10043-001-0318-8

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  • DOI: https://doi.org/10.1007/s10043-001-0318-8

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