Fractional correlator with real-time control of the space-invariance property

Zeev Zalevsky, David Mendlovic

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

In pattern recognition, it happens that the amount of space variance should be controlled. This may be achieved by use of a partially space-variant correlator. We present a novel configuration for achieving a partially controlled space-variant correlator. In this configuration the lenses are fixed in their focal lengths and locations. The filter function is also fixed. To change the amount of space variance, we need change only the longitudinal location of the filter without reencoding it. It is also shown that this type of correlator provides improved correlation peaks according to correlation-sharpness criteria.

Original languageEnglish
Pages (from-to)2370-2375
Number of pages6
JournalApplied Optics
Volume36
Issue number11
DOIs
StatePublished - 10 Apr 1997
Externally publishedYes

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