Quad-phase correlation filters for pattern recognition

1 May 1989

journal article
letter
Published by Optica Publishing Group in Applied Optics

Vol. 28 (9) , 1611-1613
https://doi.org/10.1364/ao.28.001611

Abstract

A quad-phase-only filter (QPOF) is introduced. It is shown that the QPOF can have improved correlation response and signal-to-noise ratio with respect to the Hartley binary phase-only filter for some objects.

Keywords

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