13 November 2001 Isotropic edge enhancement filter implemented with a phase-only spatial light modulator
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In this work we present three spatial filters that perform isotropic edge enhancement or recognition. Their design is based on first determining a convolution kernel that performs the desired operation and then, by Fourier transforming, obtaining the filter function. To the authors' best knowledge, these filters have not been proposed in the past. We present numerical simulations that corroborate our proposal. For the optical implementation of one of the proposed filters, a holographic technique capable of representing complex transmittances is required. In this case, the filter is simulated using a double-phase holographic code.
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David Sanchez-de-la-Llave, David Sanchez-de-la-Llave, Victor M. Arrizon, Victor M. Arrizon, Luis A. Gonzalez, Luis A. Gonzalez, } "Isotropic edge enhancement filter implemented with a phase-only spatial light modulator", Proc. SPIE 4471, Algorithms and Systems for Optical Information Processing V, (13 November 2001); doi: 10.1117/12.449329; https://doi.org/10.1117/12.449329


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