ISSN:
1349-9432
Keywords:
image recognition
;
optical transfer function
;
incoherent optical correlator
;
distortion-invariant correlation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s10043-997-0539-6
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