NDLI: Optimal Incoherent Filtering for Distortion-Invariant Image Recognition

Content Provider	Springer Nature Link
Author	Ding, Jianping Itoh, Masahide Yatagai, Toyohiko
Copyright Year	1997
Abstract	An optimal incoherent filter is proposed for distortion-invariant correlation. The optical transfer function (OTF) of the correlator is specified as a realizable phase-only term which is optimized by the simulated annealing algorithm. The phase-only OTF is used in image recognition to produce a sharp peak response and can be generated by dual-filter synthesis. Image recognition is achieved by subtracting two spatially incoherent correlation outputs produced from a positive and negative filters with an input image. Computer simulations show that the proposed correlator can yield a sharp correlation peak with excellent distortion tolerance.
Starting Page	539
Ending Page	542
Page Count	4
File Format	PDF
ISSN	13406000
Journal	Optical Review
Volume Number	4
Issue Number	5
e-ISSN	13499432
Language	English
Publisher	Springer-Verlag
Publisher Date	1997-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	image recognition optical transfer function incoherent optical correlator distortion-invariant correlation Electromagnetism, Optics and Lasers
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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Optimal Incoherent Filtering for Distortion-Invariant Image Recognition