1 March 1991 Image enhancement using optical symbolic substitution
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Abstract
Rotation-invariant image sharpening schemes based on Roberts operators, difference operators, Laplacian, and high-frequency emphasis are realized using optical symbolic substitution. Symbolic systems based on both optical content-addressable memory and phase-only holograms are considered for these image enhancement schemes.
Abdallah K. Cherri, Abdallah K. Cherri, Mohammad A. Karim, Mohammad A. Karim, } "Image enhancement using optical symbolic substitution," Optical Engineering 30(3), (1 March 1991). https://doi.org/10.1117/12.55792 . Submission:
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