1 March 1994 Edge enhancement techniques for improving the performance of binary phase-only filter pattern recognition devices
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Optical Engineering, 33(3), (1994). doi:10.1117/12.157663
Abstract
Several edge enhancement techniques are examined for improving the performance of binary phase-only filter pattern recognition devices. These include the linear techniques of blocking the lower Fourier orders and Laplacian filtering as well as the nonlinear techniques of phase extraction and phase binarization. The results indicate that the nonlinear techniques outperform the linear techniques when there is no distortion caused by aperturing the input information. However, when the input is apertured, both the linear and nonlinear techniques yield approximately the same peak-to-noise ratio.
Jehad Khoury, Peter D. Gianino, Jonathan S. Kane, Charles L. Woods, "Edge enhancement techniques for improving the performance of binary phase-only filter pattern recognition devices," Optical Engineering 33(3), (1 March 1994). http://dx.doi.org/10.1117/12.157663
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KEYWORDS
Phase only filters

Fourier transforms

Nonlinear filtering

Computer simulations

Content addressable memory

Distortion

Optical correlators

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