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Improved correlation discrimination using joint fourier‐transform optical correlator
Author(s) -
Alam Mohammad S.,
Awwal Abdul Ahad S.,
Karim Mohammad A.
Publication year - 1991
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650040305
Subject(s) - joint (building) , preprocessor , fourier transform , optical correlator , correlation , computer science , artificial intelligence , image (mathematics) , short time fourier transform , computer vision , optics , algorithm , pattern recognition (psychology) , mathematics , fourier analysis , physics , engineering , mathematical analysis , geometry , structural engineering
Attempts are being made to investigate techniques to improve the cross‐correlation peak heights of a joint‐transform‐based correlator while reducing the corresponding dc peaks. Two such techniques, namely, preprocessing the reference image and postprocessing the joint Fourier‐transform image, are investigated, and the corresponding simulation results are compared.